CN114362550B

CN114362550B - Ultrasonic power supply device and control method thereof

Info

Publication number: CN114362550B
Application number: CN202111634265.3A
Authority: CN
Inventors: 钟海东; 程振涛; 汤丽君; 汤秀清; 汤智锋; 黄腾晖
Original assignee: Guangzhou Haozhi Electromechanical Co Ltd
Current assignee: Guangzhou Haozhi Electromechanical Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2024-08-20
Anticipated expiration: 2041-12-29
Also published as: CN114362550A

Abstract

The application discloses an ultrasonic power supply device and a control method thereof, wherein the device comprises: the device comprises an input protection rectifying unit, an inversion unit, an output matching unit, a driving unit, a sampling unit and a controller unit; the output end of the input protection rectifying unit is connected with the inversion unit, the output end of the inversion unit is connected with the output matching unit, the controller unit is connected to the inversion unit through the driving unit, and the controller unit is also connected to the output matching unit through the sampling unit. The device has the advantages of simple and compact structure, less wiring requirement, small volume, low dependence on hardware, basically complete program control of function realization, greatly enhanced flexibility and openness, and capability of controlling and programming according to the requirement of actual use conditions so as to meet different load and processing requirements. The application can be widely applied to the technical field of ultrasonic products.

Description

Ultrasonic power supply device and control method thereof

Technical Field

The application relates to the technical field of ultrasonic products, in particular to ultrasonic power supply equipment and a control method thereof.

Background

The ultrasonic power supply is a circuit capable of converting power frequency electricity into high-frequency alternating current and is used for driving ultrasonic products such as ultrasonic tool handles, ultrasonic spindles and the like to perform high-frequency ultrasonic vibration and is mainly used in the technical field of ultrasonic processing. In recent decades, the development of ultrasonic processing technology is rapid, and the ultrasonic processing technology has wider research and application in the fields of ultrasonic vibration systems, deep small hole processing, wire drawing dies and cavity die grinding and polishing, ultrasonic composite processing, and particularly solves a plurality of key process problems in the field of difficult-to-process materials, thereby achieving good effects.

Because the ultrasonic processing technology belongs to a brand new technology compared with other conventional processing modes in the market, application occasions are quite complex, and compared with other conventional mature products, more flexible application scenes and control means are often needed. At present, most functions of an ultrasonic power supply on the market are realized by depending on a hardware circuit and a hardware module, wherein the ultrasonic power supply is composed of an analog circuit, has huge volume and is often heavy, and the ultrasonic power supply is composed of a half digital circuit or a digital circuit, and has the problems of more required components and complex structure although the volume of electronic components is reduced relative to that of the analog circuit; moreover, the existing products have the common problems of simple functions and poor applicability, have relatively few functions, and are suitable for different products and environments to replace hardware circuits, so that the upgrading and maintenance costs are high, the method is only suitable for single products, and the requirements of some automatic control are difficult to meet.

In view of the above, there is a need to solve the problems of the related art.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the related art to a certain extent.

To this end, an object of an embodiment of the present application is to provide an ultrasonic power supply apparatus and a control method thereof.

In order to achieve the technical purpose, the technical scheme adopted by the embodiment of the application comprises the following steps:

In one aspect, an embodiment of the present application provides an ultrasonic power supply apparatus, including:

The device comprises an input protection rectifying unit, an inversion unit, an output matching unit, a driving unit, a sampling unit and a controller unit;

the output end of the input protection rectifying unit is connected with the inversion unit, the output end of the inversion unit is connected with the output matching unit, the controller unit is connected to the inversion unit through the driving unit, and the controller unit is also connected to the output matching unit through the sampling unit.

In addition, an ultrasonic power supply apparatus according to the above embodiment of the present application may further have the following additional technical features:

Further, in one embodiment of the present application, the input protection rectifying unit includes a start-up protection circuit, a rectifying circuit, and a filtering circuit;

the starting protection circuit is arranged at the input end of the rectifying circuit, and the output end of the rectifying circuit is connected with the filter circuit.

Further, in one embodiment of the present application, the start-up protection circuit includes a protection resistor, a relay, a triode, a storage capacitor, a nineteenth resistor, and a twentieth resistor; the relay comprises a switch and a coil;

The first end of the protection resistor is connected with a power supply, and the second end of the protection resistor is connected with the input end of the rectifying circuit; the switch is connected in parallel on the protection resistor, the first end of coil is connected with the positive electrode of the power supply, the second end of coil is connected with the collector electrode of the triode, the emitting electrode of the triode is connected with the negative electrode of the power supply, the first end of coil is also connected to the base electrode of the triode through the nineteenth resistor, the first end of the twentieth resistor is connected with the base electrode of the triode, the second end of the twentieth resistor is connected with the negative electrode of the power supply, and the energy storage capacitor is connected in parallel on the twentieth resistor.

Further, in one embodiment of the present application, the start-up protection circuit further includes a first diode;

The negative electrode end of the first diode is connected with the first end of the coil, and the positive electrode end of the first diode is connected with the second end of the coil.

Further, in one embodiment of the present application, the inverter unit includes a first switching tube, a second switching tube, a third switching tube, a fourth switching tube, a first thin film capacitor, a second thin film capacitor, a third thin film capacitor, a fourth thin film capacitor, a second diode, a third diode, a fourth diode, a fifth diode, a first cement resistor, a second cement resistor, a third cement resistor, and a fourth cement resistor;

The first end of the first switching tube is connected with the positive electrode of the power supply, the second end of the first switching tube is connected with the first end of the second switching tube, and the second end of the second switching tube is grounded; the negative electrode end of the second diode is connected with the second end of the first switching tube, and the positive electrode end of the second diode is connected with the first end of the first switching tube through the first thin film capacitor; the positive electrode end of the third diode is connected with the second end of the first switching tube, and the negative electrode end of the third diode is connected with the second end of the second switching tube through the second thin film capacitor; the first end of the first cement resistor is connected to the positive electrode end of the second diode, the second end of the first cement resistor is connected to the second end of the second switch tube, the first end of the second cement resistor is connected to the first end of the first switch tube, and the second end of the second cement resistor is connected to the negative electrode end of the third diode;

The first end of the third switching tube is connected with the positive electrode of the power supply, the second end of the third switching tube is connected with the first end of the fourth switching tube, and the second end of the fourth switching tube is grounded; the negative electrode end of the fourth diode is connected with the second end of the third switching tube, and the positive electrode end of the fourth diode is connected with the first end of the third switching tube through the third thin film capacitor; the positive electrode end of the fifth diode is connected with the second end of the fourth switching tube, and the negative electrode end of the fifth diode is connected with the second end of the fourth switching tube through the fourth thin film capacitor; the first end of the third cement resistor is connected to the positive electrode end of the fourth diode, the second end of the third cement resistor is connected to the second end of the fourth switching tube, the first end of the fourth cement resistor is connected to the first end of the third switching tube, and the second end of the fourth cement resistor is connected to the negative electrode end of the fifth diode.

Further, in an embodiment of the present application, the inverter unit further includes a switching tube discharging loop;

The switching tube discharging loop comprises a sixth diode, a seventh diode, a twenty-sixth resistor, a twenty-eighth resistor and a thirty-eighth resistor; the negative electrode end of the sixth diode is connected with the control signal input end of the inversion unit, the positive electrode end of the sixth diode is connected to the control end of the first switching tube through the twenty-sixth resistor, the first end of the twenty-eighth resistor is connected with the control signal input end of the inversion unit, the second end of the twenty-eighth resistor is connected to the control end of the first switching tube, the negative electrode end of the seventh diode is connected with the control end of the first switching tube, the positive electrode end of the seventh diode is connected with the second end of the first switching tube, and the thirty-eighth resistor is connected in parallel with the seventh diode.

Further, in one embodiment of the present application, the driving unit includes a switching circuit, an isolation circuit, a logic protection circuit, a driving circuit, and a bootstrap circuit.

In another aspect, an embodiment of the present application provides a control method of an ultrasonic power supply device, for controlling the ultrasonic power supply device as described above, the control method including:

continuously sampling a plurality of groups of voltage data and current data output by the ultrasonic power supply equipment according to a preset sampling time interval;

extracting target voltage sampling data and target current sampling data of one output period from the voltage and current data according to the output period of the ultrasonic power supply device;

determining a voltage sampling effective value according to the target voltage sampling data, and determining a current sampling effective value according to the target current sampling data;

And according to the output period, converting the voltage sampling effective value into a voltage actual measurement value, and converting the current sampling effective value into a current actual measurement value.

In addition, an ultrasonic power supply apparatus and a control method thereof according to the above-described embodiments of the present application may further have the following additional technical features:

further, in one embodiment of the present application, the method further comprises the steps of:

Synchronously sampling a voltage signal and a current signal output by the ultrasonic power supply device;

Determining first time data when the voltage signal is zeroed twice, and determining second time data when the current signal is zeroed twice;

And determining a phase difference of the voltage signal and the current signal according to the first time data and the second time data.

Receiving a parameter instruction input by a user; the parameter instruction is used for setting at least one working parameter of the ultrasonic power supply equipment;

And monitoring and adjusting the working state of the ultrasonic power supply equipment according to the parameter instruction.

The advantages and benefits of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

The embodiment of the application discloses ultrasonic power supply equipment, which comprises: the device comprises an input protection rectifying unit, an inversion unit, an output matching unit, a driving unit, a sampling unit and a controller unit; the output end of the input protection rectifying unit is connected with the inversion unit, the output end of the inversion unit is connected with the output matching unit, the controller unit is connected to the inversion unit through the driving unit, and the controller unit is also connected to the output matching unit through the sampling unit. The device has the advantages of simple and compact structure, less wiring requirement, small volume, low dependence on hardware, basically complete program control of function realization, greatly enhanced flexibility and openness, and capability of controlling and programming according to the requirement of actual use conditions so as to meet different load and processing requirements.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description is made with reference to the accompanying drawings of the embodiments of the present application or the related technical solutions in the prior art, and it should be understood that the drawings in the following description are only for convenience and clarity of describing some embodiments in the technical solutions of the present application, and other drawings may be obtained according to these drawings without the need of inventive labor for those skilled in the art.

Fig. 1 is a schematic diagram of a functional module of an ultrasonic power supply device according to an embodiment of the present application;

fig. 2 is a schematic circuit diagram of an input protection rectifying unit of an ultrasonic power supply device according to an embodiment of the present application;

fig. 3 is a schematic circuit diagram of an inverter unit of an ultrasonic power supply device according to an embodiment of the present application;

fig. 4 is a schematic circuit diagram of a driving unit of an ultrasonic power supply device according to an embodiment of the present application;

fig. 5 is a schematic circuit diagram of an output matching unit of an ultrasonic power supply device according to an embodiment of the present application;

fig. 6 is a schematic circuit diagram of a sampling unit of an ultrasonic power supply device according to an embodiment of the present application;

Fig. 7 is a schematic program structure diagram of a controller unit of an ultrasonic power supply device according to an embodiment of the present application;

fig. 8 is a schematic flow chart of a control method of an ultrasonic power supply device according to an embodiment of the present application;

fig. 9 is a flowchart of processing real-time working parameters in a control method of an ultrasonic power supply device according to an embodiment of the present application.

Detailed Description

The application will be further described with reference to the drawings and specific examples. The described embodiments should not be taken as limitations of the present application, and all other embodiments that would be obvious to one of ordinary skill in the art without making any inventive effort are intended to be within the scope of the present application.

In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is to be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with one another without conflict.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the application only and is not intended to be limiting of the application.

Because the ultrasonic processing technology belongs to a brand new technology compared with other conventional processing modes in the market, application occasions are quite complex, and compared with other conventional mature products, more flexible application scenes and control means are often needed. However, most of the functions of the ultrasonic power supply on the market at present are realized by depending on a hardware circuit and a hardware module, wherein the ultrasonic power supply is composed of an analog circuit, has huge volume and is often heavy, and the ultrasonic power supply is composed of a half digital circuit or a digital circuit, and has the problems of more required components and complex structure although the volume of electronic components is reduced relative to that of the analog circuit; moreover, the existing products have the common problems of simple functions and poor applicability, have relatively few functions, and are suitable for different products and environments to replace hardware circuits, so that the upgrading and maintenance costs are high, the method is only suitable for single products, and the requirements of some automatic control are difficult to meet.

In view of this, an embodiment of the present application provides an ultrasonic power supply apparatus, including: the device comprises an input protection rectifying unit, an inversion unit, an output matching unit, a driving unit, a sampling unit and a controller unit; the output end of the input protection rectifying unit is connected with the inversion unit, the output end of the inversion unit is connected with the output matching unit, the controller unit is connected to the inversion unit through the driving unit, and the controller unit is also connected to the output matching unit through the sampling unit. The device has the advantages of simple and compact structure, less wiring requirement, small volume, low dependence on hardware, basically complete program control of function realization, greatly enhanced flexibility and openness, and capability of controlling and programming according to the requirement of actual use conditions so as to meet different load and processing requirements.

Next, an ultrasonic power supply device in an embodiment of the present application will be explained and explained first.

Referring to fig. 1, in an embodiment of the present application, an ultrasonic power supply apparatus mainly includes:

In the embodiment of the application, the functional module of the ultrasonic power supply equipment mainly comprises an input protection rectifying unit, an inversion unit, an output matching unit, a driving unit, a sampling unit and a controller unit, and of course, in some embodiments, the equipment can be further provided with a display screen, a peripheral interface and other units.

In some embodiments, the input protection rectifying circuit may include a start protection circuit, a rectifying circuit and a filtering circuit, where the start protection circuit is disposed at an input end of the rectifying circuit, and an output end of the rectifying circuit is connected to the filtering circuit. The starting protection circuit is used for reducing the impact of overvoltage generated by devices such as a filter capacitor in the equipment on a power grid and electronic components in the equipment when the equipment is started; the rectification circuit is used for rectifying an alternating current power supply, outputting direct current voltage and filtering the direct current obtained by rectification through the filtering circuit.

Specifically, referring to fig. 2, fig. 2 is a schematic diagram of an input protection rectifying unit according to an embodiment of the present application, in which a full-bridge rectifying circuit and a conventional filtering circuit are included, which is not described herein. And for the start-up protection circuit in the unit, it includes protection resistor, relay, triode, energy storage capacitor, nineteenth resistor and twentieth resistor; the relay comprises a switch and a coil;

Compared with a common rectifying circuit, the embodiment of the application has the advantages that the starting protection circuit is arranged at the input end of the rectifying circuit, the relay is arranged in the starting protection circuit, when the ultrasonic power supply equipment is started, because the relay is opened, current firstly flows through the protection resistor, and because of the existence of the protection resistor, large overvoltage cannot be generated due to the influence of a later filter capacitor during starting, the impact of the overvoltage on a power grid and electronic components during starting can be effectively prevented, the voltage withstand requirement on the components in the power supply equipment is obviously reduced, the manufacturing cost of the equipment can be reduced, and the service life is prolonged.

In some embodiments, the start-up protection circuit may further include a first diode, a negative terminal of the first diode is connected to the first terminal of the coil, and a positive terminal of the first diode is connected to the second terminal of the coil.

In the embodiment of the application, in order to prevent the damage of the inductive voltage of the coil to related devices during the action of the relay, a diode can be arranged on the relay in parallel and is recorded as a first diode so as to realize the follow current function.

Referring to fig. 3, fig. 3 is a schematic diagram of an inverter unit according to an embodiment of the application.

Specifically, the inversion unit comprises a first switching tube, a second switching tube, a third switching tube, a fourth switching tube, a first thin film capacitor, a second thin film capacitor, a third thin film capacitor, a fourth thin film capacitor, a second diode, a third diode, a fourth diode, a fifth diode, a first cement resistor, a second cement resistor, a third cement resistor and a fourth cement resistor;

In the embodiment of the application, the main body of the inversion unit can be a full-bridge inversion circuit, which comprises four switching tubes, namely a first switching tube, a second switching tube, a third switching tube and a fourth switching tube. Each switching tube is correspondingly provided with an absorption circuit, and the absorption circuit mainly comprises a first thin film capacitor, a second thin film capacitor, a third thin film capacitor, a fourth thin film capacitor, a second diode, a third diode, a fourth diode, a fifth diode, a first cement resistor, a second cement resistor, a third cement resistor and a fourth cement resistor. In particular, compared with a common inverter circuit, in the embodiment of the application, the switching loss of the switching tube can be effectively reduced due to the existence of the absorption circuit, so that the device can support higher switching speed, thereby reducing the requirement on devices.

In some embodiments, the inverter unit may further include a switching tube discharge loop; and, for each switching tube, a corresponding switching tube discharge loop can be arranged. Taking the first switching tube as an example, the switching tube discharging loop comprises a sixth diode, a seventh diode, a twenty-sixth resistor, a twenty-eighth resistor and a thirty-seventh resistor; the negative electrode end of the sixth diode is connected with the control signal input end of the inversion unit, the positive electrode end of the sixth diode is connected to the control end of the first switching tube through the twenty-sixth resistor, the first end of the twenty-eighth resistor is connected with the control signal input end of the inversion unit, the second end of the twenty-eighth resistor is connected to the control end of the first switching tube, the negative electrode end of the seventh diode is connected with the control end of the first switching tube, the positive electrode end of the seventh diode is connected with the second end of the first switching tube, and the thirty-eighth resistor is connected in parallel with the seventh diode.

It can be understood that the inverter unit in the embodiment of the application can effectively release the charge-saving at the switching tube due to the existence of the discharging loop of the switching tube, greatly reduce the risk of burning out the switching tube due to excessive accumulated charges, and improve the continuous working time and service life of the equipment.

In some embodiments, the driving unit of the ultrasonic power supply device of the present application may include a switching circuit, an isolation circuit, a logic protection circuit, a driving circuit, and a bootstrap circuit. Referring to fig. 4, fig. 4 is a schematic diagram of a driving unit according to an embodiment of the application. In the driving unit shown in fig. 4, a switching circuit composed of a buffer chip U9 and the like, an isolation circuit composed of optocoupler chips U7, U10 and the like, a logic protection circuit composed of a logic chip U12, a driving circuit composed of driving chips U8, U11, and a bootstrap circuit composed of a tenth capacitor C10, a fifteenth capacitor C15, a fourteenth diode D14, and a fifteenth diode D15 are included. Compared with a common driving circuit, in the driving unit provided by the embodiment of the application, due to the existence of the switching circuit, the system can control whether the equipment outputs or not through the SDOUT signal, and compared with the conventional switching control, the driving unit is more flexible and rapid and has higher controllability; due to the existence of the protection circuit, when the system output is abnormal, if the upper and lower drives are simultaneously opened, the drive can be controlled to be not output through the comparison of the logic chips by the multiple SD signals, so that the short circuit or the burning of equipment is prevented; because of the existence of the bootstrap circuit, the voltage of the upper bridge arm and the lower bridge arm can be kept consistent under the action of the bootstrap circuit, and compared with a common driving circuit, the bootstrap circuit can be powered by only one power supply, thereby reducing the complexity of the circuit.

Referring to fig. 5, in the embodiment of the present application, the output matching unit may perform voltage transformation through a matching transformer, and may select a suitable transformation ratio according to a load, and the unit may include an LC filter circuit, so as to convert a square wave signal outputted by inversion into a sine wave signal. Referring to fig. 6, in the embodiment of the present application, the sampling unit may collect voltage and current signals output by the device, where the voltage signals may be obtained by dividing a chip resistor, and the current signals may be obtained by collecting a current transformer.

In the embodiment of the present application, the controller unit of the ultrasonic power supply device is used for implementing the task of the program control part, specifically, the controller unit may adopt a master control chip of STM32F407 series, and is programmed by a C language, where the program structure is as shown in fig. 7, and each functional program is associated in an interrupt form, and is matched with each other to implement the function, and the specific scheme includes: 1) System guidance: and (3) powering up and initializing the system, initializing the size of a total stack interval, executing system initialization, initializing each clock, configuring the address of the vector table, and then jumping to reset the interrupt. 2) Bottom layer module configuration: the method comprises the steps of data initialization configuration, GPIO configuration, IWDG watchdog configuration, control switch interrupt configuration, ADC peripheral module configuration, PWM function output module configuration, ECAP port input sampling configuration, USART serial module configuration and internal FLASH user working parameter reading. This section is mainly used to provide a hardware configuration basis for the use of functional peripherals. 3) Input sampling data processing: the device is used for detecting voltage, current and phase signals of a load during operation of the device.

Referring to fig. 8, fig. 8 is a schematic flow chart of a control method of an ultrasonic power supply device according to an embodiment of the present application, where the ultrasonic power supply device and the control method thereof may be configured in the controller unit of the ultrasonic power supply device, or may be configured with other module units. Referring to fig. 8, the control method of the ultrasonic power supply apparatus includes, but is not limited to:

step 110, continuously sampling a plurality of groups of voltage data and current data output by the ultrasonic power supply equipment according to a preset sampling time interval;

step 120, extracting target voltage sampling data and target current sampling data of one output period from the voltage and current data according to the output period of the ultrasonic power supply device;

step 130, determining a voltage sampling effective value according to the target voltage sampling data, and determining a current sampling effective value according to the target current sampling data;

And 140, converting the voltage sampling effective value into a voltage actual measurement value and converting the current sampling effective value into a current actual measurement value according to the output period.

In the embodiment of the application, a sampling time interval can be preset, then a plurality of groups of original voltage data and current data can be sampled continuously at the sampling time interval, for example, 100 groups of voltage data and current data can be sampled, then according to the output period of the ultrasonic power supply device, how many groups of data can be sampled according to the set sampling time interval in one output period can be calculated, then the data in one output period is taken out from 100 data to calculate, and the taken data are recorded as target voltage sampling data and target current sampling data. In the embodiment of the application, the method adopted in calculation can be an integration method, namely adding up the target voltage sampling data and the target current sampling data to obtain an integrated value of the effective value, reversely pushing back through an integration formula to obtain the effective value of the data, recording the effective value as the voltage sampling effective value and the current sampling effective value, and multiplying the effective value by a fixed sampling proportion according to the length of an output period to obtain the actual voltage metering value and the actual current metering value. In the embodiment of the application, the actual measurement values can be stored for digital display, feedback transmission, comparison with overload setting values and the like.

In some embodiments, the method of the present application may further comprise the steps of:

In the embodiment of the application, after the timing period of the timer is set, the voltage signal and the current signal can be synchronously sampled, when the point that the voltage signal is larger than 0 is detected, the time data at the moment is recorded, the detection is continued, when the voltage signal is detected to return to 0 again, the time data at the moment is recorded, and the twice-recorded data is recorded as the first time data. Similarly, the time data corresponding to the current signal is recorded and is recorded as second time data, and the magnitude of the phase difference between the voltage signal and the current signal and the actual output frequency can be obtained by comparing the four time values. Compared with the conventional AD chip and phase-locked loop chip sampling mode, the method only needs to obtain the original data, converts the numerical value and the information through a program, can replace hardware by the program, reduces the requirement on the hardware, and simplifies the product structure.

The embodiment of the application can also comprise a processing process for outputting display data, which is used for interacting data and instructions with a screen and a control machine, and comprises working state display, working parameter display, frequency searching curve display and the like. Specifically, in the embodiment of the present application, the data may be compared and judged to display or transmit the following contents to the control console: starting up state: judging whether the equipment is normal or not according to the program initialization condition; searching frequency state: judging whether the frequency searching result is normal or not according to the frequency searching data, and whether the frequency searching result meets the requirements or not; working state: according to the detected output, the working state or stop working state can be displayed; working parameters: voltage value, current value, phase value, frequency value, power value, etc. of actual output; frequency error alarm: detecting that the frequency output and the set value are different; and (3) product overload alarm: detecting that the voltage or the current exceeds a set overload value; the search frequency curve shows: and making a curve of the sampled data and sending the curve to a screen for display.

The embodiment of the application can also comprise feedback processing of parameter instructions and the like input by a user. Specifically, after receiving the parameter command, the working state of the ultrasonic power supply device can be monitored and adjusted according to the parameter command. For example, in some embodiments, processing of load output data may be included: the parameter instructions fed by the user through the control signal interface can be monitored in real time, and the timely response can be achieved, wherein the parameter instructions can comprise frequency searching, work, stopping, mode switching and the like. The ultrasonic power supply equipment is controlled by product frequency searching, fixed mode output, phase tracking mode output, impedance tracking mode output and the like, and the specific implementation method of the program flow is as follows: and (3) configuring PWM wave starting operation: setting the counting interval of an STM32 timer, then performing up-down counting, calculating the counting value of one period of the frequency according to the frequency required to be output, setting the counting value of the timer as the frequency value, changing the level of an IO port at a 1/2 changing value, outputting square waves with the duty ratio of 1/2 consistent with the set frequency at the IO port, and similarly, changing the polarity of the level to obtain square waves with the other path opposite to the other path, and correspondingly adding or subtracting certain values at the 1/2 positions of the two values to obtain a controllable dead zone. Similarly, another timer is used to obtain another two paths of square waves, 4 paths of square waves are output to the control end of the bridge rectifier circuit, and then alternating-current square wave signals with set frequency can be obtained, at the moment, the duty ratio of positive and negative waveforms is close to 1/2 (only one dead zone value), the count value of the first timer is used as a reference, the second counting starting technical time delays the first path by one value, the value is a phase-shifting value, the duty ratio of the waveform can be adjusted by setting the value, and the alternating-current step wave signals with arbitrary frequency and arbitrary duty ratio which are completely controlled by a program can be obtained by setting the duty ratio of the waveform to an arbitrary value.

In some embodiments, processing of real-time operating parameters may also be included: in operation, a user can modify setting parameters, output frequency, output power and the like of the ultrasonic power supply device in real time, so that a load can stably and effectively output under a changed environment. The program flow is shown in fig. 9, and the specific implementation method is as follows: when the program works, the screen and the communication information are detected in real time in an interrupt mode, corresponding control instructions can be sent through the screen and the communication interface, real-time working parameter settings such as power, frequency, overload value, working mode, working time and the like are carried out on the equipment after judgment, working states such as working conditions, voltage, current, phase, impedance and the like are fed back in real time, and the equipment is controlled and monitored in all directions.

It can be understood that, by the ultrasonic power supply device and the control method thereof provided in the embodiments of the present application, hardware and program are designed in a matching manner, and compared with the products on the market at present, the ultrasonic power supply device has at least the following advantages:

1. the device has the advantages of simple and compact structure, less wiring requirement and smaller volume;

2. the circuit of the equipment is simple in structure, complete in function, and low in quality requirement on the device, and the requirement on the device can be greatly reduced by the optimized design, so that the device is small in size;

3. The device can realize programmed frequency and power output, can randomly set the output frequency and the output power through a program during operation, and can digitally adjust the frequency and the power in real time during operation;

4. the output programming protection can be realized, the overload voltage can be set at will during operation, the overload current can be protected, and the overload protection value can be adjusted in real time during operation;

5. The functions of communication control and communication feedback can be realized, and the program has a plurality of digitized control parameters and display feedback parameters, so that the equipment and the machine tool can be subjected to real-time communication control, and programmed output and programmed control can be realized;

Based on the characteristics, the equipment provided by the embodiment of the application can well solve the problems of simple functions, complex structure and poor applicability of the existing product, the equipment has very low dependence on hardware, the function is basically and completely controlled by a program, the flexibility and the openness are greatly enhanced, the control programming can be carried out according to the actual use condition requirements so as to meet different load and processing requirements, the applicability of the product is greatly enhanced, the equipment can adapt to more application occasions, in addition, the setting and the control of the ultrasonic power supply equipment are all controlled based on the program, and a plurality of automatic functions can be realized through the programming.

In some alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may in fact be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flowcharts of the present application are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed, and in which sub-operations described as part of a larger operation are performed independently.

Furthermore, while the application is described in the context of functional modules, it should be appreciated that, unless otherwise indicated, one or more of the functions and/or features may be integrated in a single physical device and/or software module or may be implemented in separate physical devices or software modules. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary to an understanding of the present application. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be apparent to those skilled in the art from consideration of their attributes, functions and internal relationships. Accordingly, one of ordinary skill in the art can implement the application as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative and are not intended to be limiting upon the scope of the application, which is to be defined in the appended claims and their full scope of equivalents.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium may even be paper or other suitable medium upon which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.

It is to be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.

In the foregoing description of the present specification, reference has been made to the terms "one embodiment/example", "another embodiment/example", "certain embodiments/examples", and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.

While the preferred embodiment of the present application has been described in detail, the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present application, and these equivalent modifications or substitutions are intended to be included in the scope of the present application as defined in the appended claims

In the description of the present specification, reference to the term "one embodiment," "another embodiment," or "certain embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A control method of an ultrasonic power supply apparatus, characterized in that the ultrasonic power supply apparatus comprises:

The output end of the input protection rectifying unit is connected with the inversion unit, the output end of the inversion unit is connected with the output matching unit, the controller unit is connected to the inversion unit through the driving unit, and the controller unit is also connected to the output matching unit through the sampling unit;

The input protection rectifying unit comprises a starting protection circuit and a rectifying circuit, wherein the starting protection circuit comprises a protection resistor, a relay, a triode, an energy storage capacitor, a nineteenth resistor and a twentieth resistor; the relay comprises a switch and a coil;

The first end of the protection resistor is connected with a power supply, and the second end of the protection resistor is connected with the input end of the rectifying circuit; the switch is connected in parallel with the protection resistor, the first end of the coil is connected with the positive electrode of the power supply, the second end of the coil is connected with the collector electrode of the triode, the emitter electrode of the triode is connected with the negative electrode of the power supply, the first end of the coil is also connected with the base electrode of the triode through the nineteenth resistor, the first end of the twentieth resistor is connected with the base electrode of the triode, the second end of the twentieth resistor is connected with the negative electrode of the power supply, and the energy storage capacitor is connected in parallel with the twentieth resistor;

The control method comprises the following steps:

Extracting target voltage sampling data and target current sampling data of one output period from the voltage data and the current data according to the output period of the ultrasonic power supply equipment;

According to the output period, converting the voltage sampling effective value into a voltage actual measurement value, and converting the current sampling effective value into a current actual measurement value;

the method further comprises the steps of:

2. The control method of an ultrasonic power supply apparatus according to claim 1, wherein said input protection rectifying unit further comprises a filter circuit;

3. The control method of an ultrasonic power supply device according to claim 1, wherein the start-up protection circuit further comprises a first diode;

4. The control method of an ultrasonic power supply device according to claim 1, wherein the inverter unit includes a first switching tube, a second switching tube, a third switching tube, a fourth switching tube, a first thin film capacitor, a second thin film capacitor, a third thin film capacitor, a fourth thin film capacitor, a second diode, a third diode, a fourth diode, a fifth diode, a first cement resistor, a second cement resistor, a third cement resistor, and a fourth cement resistor;

5. The control method of an ultrasonic power supply apparatus according to claim 4, wherein said inverter unit further comprises a switching tube discharge circuit;

6. The control method of an ultrasonic power supply device according to claim 1, wherein the driving unit includes a switching circuit, an isolation circuit, a logic protection circuit, a driving circuit, and a bootstrap circuit.

7. The control method of an ultrasonic power supply device according to claim 1, characterized in that the method further comprises the steps of: