CN107992152B - Auxiliary network circuit for improving response speed of analog integral control loop - Google Patents
Auxiliary network circuit for improving response speed of analog integral control loop Download PDFInfo
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- CN107992152B CN107992152B CN201810093245.1A CN201810093245A CN107992152B CN 107992152 B CN107992152 B CN 107992152B CN 201810093245 A CN201810093245 A CN 201810093245A CN 107992152 B CN107992152 B CN 107992152B
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- 239000003990 capacitor Substances 0.000 claims abstract description 26
- 238000005070 sampling Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/625—Regulating voltage or current wherein it is irrelevant whether the variable actually regulated is AC or DC
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
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- Automation & Control Theory (AREA)
- Feedback Control In General (AREA)
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Abstract
The invention discloses an auxiliary network circuit for improving the response speed of an analog integral control loop in the field of automatic control, which comprises an integral circuit and an auxiliary circuit; the integrating circuit consists of a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a triode Q1, a capacitor C2, an operational amplifier U2 and a diode D2; the auxiliary circuit is composed of a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C1, a diode D1 and an operational amplifier U1, when step signals are input in feedback of the system, the capacitor discharge of the capacitor C2 is quickened through the conduction of a triode Q1 in the auxiliary circuit, the time for the system to reach a stable value is shortened, and therefore the response time of the system is improved.
Description
Technical Field
The present invention relates to an auxiliary circuit, and more particularly to an auxiliary network circuit for improving the response speed of an analog integral control loop.
Background
The traditional analog proportional-integral control loop is widely applied to the field of industrial control, particularly the application and the traditional switch-type power supply control loop, the traditional analog proportional-integral control loop is highly reliable and highly stable and is always used up to date, the traditional analog proportional-integral control loop mainly comprises a resistor, a capacitor and an operational amplifier, the capacity parameter of the capacitor determines the response time of the system, but the device parameters of the control loop are fixed once the device parameters are confirmed, when the response time of the system needs to be improved, the device parameters, mainly the capacitor parameters, need to be replaced, and the compatibility of the system is greatly reduced.
Disclosure of Invention
The invention aims to provide an auxiliary network circuit for improving the response speed of an analog integral control loop and improving the response time of the analog integral control loop.
The purpose of the invention is realized in the following way: an auxiliary network circuit for improving the response speed of an analog integral control loop comprises an integrating circuit and an auxiliary circuit;
The integrating circuit consists of a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a triode Q1, a capacitor C2, an operational amplifier U2 and a diode D2; one end of the resistor R6 is connected with the 2 pin of the operational amplifier U2, the other end of the resistor R6 is connected with the collector electrode of the triode Q1, one end of the resistor R7 is connected with the 2 pin of the operational amplifier U2, the other end of the resistor R7 is used as a first reference end, one end of the resistor R9 is connected with the 2 pin of the operational amplifier U2, the other end of the resistor R9 is used as a feedback end, the emitter electrode of the triode Q1 is connected with the 6 pin of the operational amplifier U2, one end of the capacitor C2 is connected with the 2 pin of the operational amplifier U2, the other end of the capacitor C2 is connected with the 6 pin of the operational amplifier U2, one end of the resistor R10 is connected with the 3 pin of the operational amplifier U2, the other end of the resistor R8 is connected with the +12V power supply, the other end of the resistor R8 is connected with the 6 pin of the operational amplifier U2 through the diode D2, the 6 pin of the operational amplifier U2 is used as a control output end, the 4 pin of the operational amplifier U2 is connected with the-12V power supply, and the 7 pin of the operational amplifier U2 is connected with the +12V power supply;
The auxiliary circuit consists of a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C1, a diode D1 and an operational amplifier U1; one end of the resistor R1 is grounded, the other end of the resistor R1 is connected with the 2 pin of the operational amplifier U1 through the resistor R2, one end of the resistor R4 is connected with the 3 pin of the operational amplifier U1, the other end of the resistor R4 is used as a second reference end, one end of the resistor R3 is connected with the base electrode of the triode Q1, the other end of the resistor R3 is connected with the 6 pin of the operational amplifier U1 through the diode D1, one end of the resistor R5 is connected with the electrode point between the resistor R1 and the resistor R2, the other end of the resistor R5 is connected with the feedback end, one end of the capacitor C1 is connected with the 2 pin of the operational amplifier U1, the other end of the capacitor C1 is connected with the 6 pin of the operational amplifier U1, the 4 pin of the operational amplifier U1 is connected with a-12V power supply, and the 7 pin of the operational amplifier U1 is connected with a +12V power supply;
The feedback end is a system output sampling value, the first reference end and the second reference end are system reference values, the first reference end is a negative value, the second reference end is a positive value, the absolute values of the first reference end and the second reference end are equal, and the control output end is a system control reference output value.
As a further limitation of the present invention, the positive electrode of the diode D1 is connected to the resistor R3 and the negative electrode is connected to the 6 pin of the operational amplifier U1, and the positive electrode of the diode D2 is connected to the resistor R8 and the negative electrode is connected to the 6 pin of the operational amplifier U2.
Compared with the prior art, the invention has the beneficial effects that when step signals are input in the feedback of the system, the capacitor C2 discharge is quickened through the conduction of the triode Q1 in the auxiliary circuit, and the time for the system to reach a stable value is shortened, so that the response time of the system is improved, and meanwhile, when the system is in a stable state, the auxiliary circuit does not work and the normal operation of the system is not influenced. The invention can be used in the field of automation control based on analog loop control.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
An auxiliary network circuit for improving the response speed of an analog integral control loop as shown in fig. 1 comprises an integrating circuit and an auxiliary circuit;
The integrating circuit consists of a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a triode Q1, a capacitor C2, an operational amplifier U2 and a diode D2; one end of the resistor R6 is connected with the 2 pin of the operational amplifier U2, the other end of the resistor R6 is connected with the collector electrode of the triode Q1, one end of the resistor R7 is connected with the 2 pin of the operational amplifier U2, the other end of the resistor R7 is used as a first reference end, one end of the resistor R9 is connected with the 2 pin of the operational amplifier U2, the other end of the resistor R9 is used as a feedback end, the emitter electrode of the triode Q1 is connected with the 6 pin of the operational amplifier U2, one end of the capacitor C2 is connected with the 2 pin of the operational amplifier U2, the other end of the capacitor C2 is connected with the 6 pin of the operational amplifier U2, one end of the resistor R10 is connected with the 3 pin of the operational amplifier U2, the other end of the resistor R8 is connected with the +12V power supply, the other end of the resistor R8 is connected with the 6 pin of the operational amplifier U2 through the diode D2, the 6 pin of the operational amplifier U2 is used as a control output end, the 4 pin of the operational amplifier U2 is connected with the-12V power supply, the 7 pin of the operational amplifier U2 is connected with the +12V power supply, and the positive electrode of the diode D2 is connected with the 6 pin of the operational amplifier U2;
The auxiliary circuit consists of a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C1, a diode D1 and an operational amplifier U1; one end of the resistor R1 is grounded, the other end of the resistor R1 is connected with the 2 pin of the operational amplifier U1 through the resistor R2, one end of the resistor R4 is connected with the 3 pin of the operational amplifier U1, the other end of the resistor R4 is used as a second reference end, one end of the resistor R3 is connected with the base electrode of the triode Q1, the other end of the resistor R3 is connected with the 6 pin of the operational amplifier U1 through the diode D1, one end of the resistor R5 is connected with the electrode point between the resistor R1 and the resistor R2, the other end of the resistor R5 is connected with the feedback end, one end of the capacitor C1 is connected with the 2 pin of the operational amplifier U1, the other end of the capacitor C1 is connected with the 6 pin of the operational amplifier U1, the 4 pin of the operational amplifier U1 is connected with a-12V power supply, the 7 pin of the operational amplifier U1 is connected with a +12V power supply, the positive electrode of the diode D1 is connected with the resistor R3, the negative electrode of the diode is connected with the 6 pin of the operational amplifier U1, and the operational amplifier U1 is a conventional operational amplifier;
The feedback end is a system output sampling value, the first reference end and the second reference end are system reference values, the first reference end is a negative value, the second reference end is a positive value, the absolute values of the first reference end and the second reference end are equal, and the control output end is a system control reference output value.
The specific implementation method of the invention comprises the following steps:
Stability operating state: in the integrating circuit in fig. 1, when the absolute value of the first reference end is equal to the absolute value of the feedback, the voltages of the 2 pin and the 3 pin of the U2 are equal, and the output voltage of the control output point reaches a dynamic stable value;
Step response time state: when feedback has step change, the feedback voltage is led into an auxiliary circuit, the voltage division is carried out through R1 and R5, the voltage is compared with a second reference end, the voltage of a pin 2 of U1 is higher than the voltage of a pin 3, the voltage of a pin 6 outputs a low level, so that Q1 is conducted, after the system enters a stable state, the voltage of a pin 3 of U1 is higher than the voltage of a pin 2, the voltage of a pin 6 outputs a high level, and Q1 and R6 stop working; the integration time can be changed by changing the size of C2, the smaller the integration is, the faster the integration speed is, and the shorter the time for reaching the maximum value is, and R6 is connected to C2 in parallel through Q1 conduction, so that the discharge time of C2 is shortened, and the time for the system to reach the maximum value is reduced.
The invention is not limited to the above embodiments, and based on the technical solution disclosed in the invention, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the invention.
Claims (2)
1. An auxiliary network circuit for improving the response speed of an analog integral control loop is characterized by comprising an integral circuit and an auxiliary circuit;
The integrating circuit consists of a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a triode Q1, a capacitor C2, an operational amplifier U2 and a diode D2; one end of the resistor R6 is connected with the 2 pin of the operational amplifier U2, the other end of the resistor R6 is connected with the collector electrode of the triode Q1, one end of the resistor R7 is connected with the 2 pin of the operational amplifier U2, the other end of the resistor R7 is used as a first reference end, one end of the resistor R9 is connected with the 2 pin of the operational amplifier U2, the other end of the resistor R9 is used as a feedback end, the emitter electrode of the triode Q1 is connected with the 6 pin of the operational amplifier U2, one end of the capacitor C2 is connected with the 2 pin of the operational amplifier U2, the other end of the capacitor C2 is connected with the 6 pin of the operational amplifier U2, one end of the resistor R10 is connected with the 3 pin of the operational amplifier U2, the other end of the resistor R8 is connected with the +12V power supply, the other end of the resistor R8 is connected with the 6 pin of the operational amplifier U2 through the diode D2, the 6 pin of the operational amplifier U2 is used as a control output end, the 4 pin of the operational amplifier U2 is connected with the-12V power supply, and the 7 pin of the operational amplifier U2 is connected with the +12V power supply;
The auxiliary circuit consists of a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C1, a diode D1 and an operational amplifier U1; one end of the resistor R1 is grounded, the other end of the resistor R1 is connected with the 2 pin of the operational amplifier U1 through the resistor R2, one end of the resistor R4 is connected with the 3 pin of the operational amplifier U1, the other end of the resistor R4 is used as a second reference end, one end of the resistor R3 is connected with the base electrode of the triode Q1, the other end of the resistor R3 is connected with the 6 pin of the operational amplifier U1 through the diode D1, one end of the resistor R5 is connected with the electrode point between the resistor R1 and the resistor R2, the other end of the resistor R5 is connected with the feedback end, one end of the capacitor C1 is connected with the 2 pin of the operational amplifier U1, the other end of the capacitor C1 is connected with the 6 pin of the operational amplifier U1, the 4 pin of the operational amplifier U1 is connected with a-12V power supply, and the 7 pin of the operational amplifier U1 is connected with a +12V power supply;
The feedback end is a system output sampling value, the first reference end and the second reference end are system reference values, the first reference end is a negative value, the second reference end is a positive value, the absolute values of the first reference end and the second reference end are equal, and the control output end is a system control reference output value.
2. The auxiliary network circuit for improving response speed of analog integrating control loop according to claim 1, wherein the positive electrode of the diode D1 is connected to the resistor R3 and the negative electrode is connected to the 6 pin of the operational amplifier U1, and the positive electrode of the diode D2 is connected to the resistor R8 and the negative electrode is connected to the 6 pin of the operational amplifier U2.
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| CN201810093245.1A CN107992152B (en) | 2018-01-31 | 2018-01-31 | Auxiliary network circuit for improving response speed of analog integral control loop |
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| CN201810093245.1A CN107992152B (en) | 2018-01-31 | 2018-01-31 | Auxiliary network circuit for improving response speed of analog integral control loop |
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| CN107992152B true CN107992152B (en) | 2024-09-10 |
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| CN108919072B (en) * | 2018-06-22 | 2023-12-19 | 江苏特智智能装备股份有限公司 | Auxiliary network circuit for improving implosion detection sensitivity of aluminum electrolytic capacitor |
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| CN207851661U (en) * | 2018-01-31 | 2018-09-11 | 国充充电科技江苏股份有限公司 | A kind of auxiliary network circuit improving analog integration control loop response speed |
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| GB9415185D0 (en) * | 1994-07-28 | 1994-09-21 | Thomson Consumer Electronics | Fast acting control system |
| JP2012142764A (en) * | 2010-12-28 | 2012-07-26 | Nippon Dempa Kogyo Co Ltd | Pll circuit |
| CN105140976A (en) * | 2014-06-09 | 2015-12-09 | 深圳华粤宝电池有限公司 | Lithium ion power battery group equalization discharging system |
| CN105278324B (en) * | 2015-11-09 | 2017-07-18 | 电子科技大学 | A kind of high-resolution rapid time interval measuring circuit based on double constant current source structures |
| CN205490490U (en) * | 2016-01-15 | 2016-08-17 | 广东小天才科技有限公司 | Controllable integrator circuit of discharge time |
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| CN207851661U (en) * | 2018-01-31 | 2018-09-11 | 国充充电科技江苏股份有限公司 | A kind of auxiliary network circuit improving analog integration control loop response speed |
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