KR102322879B1 - Vibration generator and vibration damping system using the same - Google Patents

Abstract

The present invention relates to a vibrator and a vibration damping system using the same, and a vibration sensor 50 that detects vibration generated from a vibration source 54 to generate a detection signal S1, and receives the detection signal S1. A vibrator (1) equipped with a control unit (56) that generates a control signal (S3) in real time, and an electromagnet (36) for generating a canceling vibration having the same frequency and opposite phase to the vibration according to the control signal (S3) includes In the vibrator 1, the permanent magnet 20 and the electromagnet 36 interact and the moving body 30 on which the electromagnet 36 is installed moves in a linear reciprocating motion, which is opposite to the main frequency vibration generated from the vibration source 54. By generating a vibration with

Description

Vibration generator and vibration damping system using the same

The present invention relates to a vibrator and a vibration damping system using the same, and more particularly, to a vibrator generating vibration having a phase opposite to the waveform of vibration generated in a transformer or a reactor, and a vibration damping system using the same. .

For example, a transformer changes the voltage and current of alternating current by using electromagnetic induction. The transformer is widely used from a small electronic device to a large-scale substation or power transmission facility, and in particular, an ultra-high voltage large-capacity transformer is used for a large-scale substation or power transmission facility.

Such an ultra-high voltage large-capacity transformer is configured to include an iron core on which a thin silicon steel sheet is laminated, and noise and vibration are generated by an air-gap due to a tolerance existing between each steel sheet.

Because ultra-high voltage and large-capacity transformers used in substation or transmission facilities operate 24/7 due to industrial characteristics, noise and vibration generated from the transformer are transmitted to private houses, causing serious problems such as noise pollution.

As a method to solve this problem, various methods have been proposed, such as installing a sound absorbing material to reduce noise and vibration of a transformer or installing a barrier wall by securing a space to offset the noise.

However, these methods could not completely solve the economic problems due to the very high cost of raw materials and high maintenance cost to be applied to large-capacity transformers, and the noise and vibration problems simply by absorbing noise and vibration.

Republic of Korea Patent No. 10-1604320

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the related art as described above, and to provide a vibrator for removing vibrations by generating vibrations in phase opposite to vibrations generated from a vibration source.

Another object of the present invention is to provide a vibrator that can be simply installed and used in an enclosure of a vibration source.

Another object of the present invention is to provide a vibrator capable of generating a relatively large vibration.

Another object of the present invention is to create a desired vibration through the interaction between a vibrating body that is an electromagnet and a permanent magnet.

Another object of the present invention is to provide a vibration damping system capable of removing vibration generated from a large-capacity vibration source.

According to a feature of the present invention for achieving the object as described above, the present invention is a vibration sensor for generating a detection signal by detecting the vibration generated from the vibration source; a control unit receiving the detection signal and generating a control signal in real time; According to the control signal, the electromagnet is compressed and stretched opposite to each other by generating an attractive force and a repulsive force between the electromagnet receiving the control signal by generating a canceling vibration having the same frequency and opposite phase to the vibration. The vibrator may include a vibrator moving relative to each other between the first and second elastic members, and the vibrator includes a housing having an interior space and constituting an exterior, and a first metal material that is fixed to face each other and installed inside the housing. A moving body having a fixed plate, a second fixed plate, a permanent magnet installed on the first fixed plate, and an electromagnet facing the permanent magnet, the moving body reciprocating in a straight line by attractive and repulsive forces between the electromagnet and the permanent magnet, and passing through the moving body A plurality of moving guides installed to guide the linear reciprocating motion of the moving body, one end installed on the first fixed plate and the other end installed on the second fixed plate, and an area in which the moving body moves with respect to the permanent magnet is set and the moving body and a first elastic member and a second elastic member installed on the plurality of moving guides to provide an elastic force for the reciprocating motion of The first elastic member and the second elastic member are cylindrical coil springs installed through the center of the movable guide, and the first elastic member is on one surface of the movable base and a first fixed plate on which the permanent magnet is installed. The ends of the second elastic member are respectively supported, and the ends are respectively supported on second fixing plates fixed to the other surface of the movable base and the inner surface of the housing opposite to the permanent magnet, and the first elastic member and the second elastic member are the movable body. When moving in the direction of the magnet and moving in the direction opposite to the permanent magnet, compression and restoration may occur alternately.

The control unit receives the detection signal and generates a signal amplifying unit for generating an analysis signal including a value required for a predetermined pattern or algorithm, and generating a control signal so that the vibrator generates the offset vibration based on the analysis signal Includes a signal generator.

The signal generating unit generates a control signal for the vibrator to generate a canceling vibration having the same frequency as the frequency of the vibration but having an opposite phase, and the control signal adjusts the current strength and transmission period applied to the vibrator By doing so, the frequency and phase of the offset vibration generated by the vibrator are adjusted.

The control unit further includes a display for visually outputting the analysis signal generated by the signal amplifying unit, and a controller capable of manually generating the control signal of the signal generating unit through the information output to the display.

The vibration sensor is a MEMS sensor.

The vibrator includes a housing, a mounting magnet provided on the outer surface of one side of the housing to magnetically attach the housing to the surface of the vibration source, a permanent magnet installed on one side of the inner space of the housing, and an electromagnet facing the permanent magnet and a movable body reciprocating linearly by attractive and repulsive forces between the electromagnet and the permanent magnet, and a first elastic member and a second elastic member for setting a region in which the movable body moves toward the permanent magnet and moves in the opposite direction. .

According to another feature of the present invention, the present invention includes a housing having an inner space and constituting the exterior, a first and second fixing plate made of a metal material that is fixed to face each other and installed inside the housing, and the first fixing plate A permanent magnet installed in a moving body having an electromagnet facing the permanent magnet and moving in a straight line reciprocating motion by attractive and repulsive force between the electromagnet and the permanent magnet, and installed through the moving body to guide the linear reciprocating motion of the moving body, A plurality of moving guides having one end installed on the first fixed plate and the other end installed on the second fixed plate, and the plurality of moving guides to set an area in which the moving body moves with respect to the permanent magnet and to provide an elastic force for reciprocating motion of the moving body It may include a first elastic member and a second elastic member installed on the moving guide, the movable body may include a moving base in which the electromagnet and the electromagnet are installed and the moving guide passes through, the first elastic member The member and the second elastic member are cylindrical coil springs through which the moving guide is installed through the center, and the first elastic member has one surface of the moving base and an end supported by a first fixed plate on which the permanent magnet is installed, respectively, and Ends of the second elastic member may be respectively supported on the second fixing plate fixed to the other surface of the movable base and the inner surface of the housing opposite to the permanent magnet, and the first elastic member and the second elastic member are formed when the movable body moves in the direction of the permanent magnet. When the permanent magnet and the permanent magnet move in opposite directions, compression and restoration may occur alternately.

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The iron core constituting the electromagnet includes a connection part seated on the movable base, and first, second, and third extension parts extending side by side in the direction of the permanent magnet from the connection part, and a coil is wound on the second extension part. .

A bushing having an inner surface is located in the guide through hole through which the moving guide passes through the moving base, and the bushing may extend to the inside of the first and second elastic members.

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A mounting magnet that is magnetically attached to the surface of the vibration source is installed on one side of the outer surface of the housing.

In the vibrator and the vibration damping system using the same according to the present invention, at least one or more of the following effects can be obtained.

The present invention has an effect of attenuating both vibration and noise by sensing vibrations for each main frequency generated from a vibration source in real time and canceling them with vibrations having an opposite phase through an exciter.

Since the present invention can be selectively installed on the entire surface or a local part of the vibration source, it is possible to take effective measures for reducing vibration. In addition, it is possible to easily identify the vibrator or the sensor that does not operate normally by the output device, thereby increasing work efficiency such as maintenance and repair.

In the vibrator of the present invention, the moving body reciprocates linearly along the moving guide, and the first and second elastic members at both ends of the moving body regulate the moving range of the moving body, and at the same time, the attractive and repulsive force between the electromagnet and the permanent magnet of the moving body. Make sure that the movement in the opposite direction is smooth at the time of replacement. Accordingly, there is also an effect that the vibration is smoothly generated by the moving body.

In the vibrator of the present invention, the first elastic member and the second elastic member are supported on both sides of the moving base of the movable body to act as an elastic force. Compression and tensioning operations of the member and the second elastic member occur along a predetermined trajectory. Accordingly, the force acting on the first and second elastic members is provided regularly and accurately for the movement of the movable body, so that the entire operation of the vibrator is stably performed.

1 is a schematic cross-sectional view showing the configuration of a preferred embodiment of the vibrator according to the present invention.
Figure 2 is an enlarged cross-sectional view showing an enlarged area A of Figure 1;
Figure 3 is a plan view showing a steel plate constituting the iron core of the vibrator shown in Figure 1;
4 is a block diagram showing the configuration of a vibration damping system according to the present invention.
5 is a block diagram of a control unit constituting a vibration damping system according to an embodiment of the present invention;
Figure 6 is an operation state diagram showing a state in which the moving object is close to the permanent magnet in the vibrator of the embodiment of the present invention.
7 is an operation state diagram showing a state in which the moving object is moved away from the permanent magnet in the vibrator of the embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

First, the configuration of the vibrator of the embodiment of the present invention will be described with reference to FIGS. 1 to 3 . The housing 10 forms the exterior of the vibrator 1 . The shape of the housing 10 may be approximately hexahedral or cylindrical. An inner space 12 is formed inside the housing 10 . Components for generating vibration to be described below are installed in the inner space 12 . A cover 14 is provided on one surface of the housing 10 to open and close the inner space 12 . Of course, the configuration for opening and closing the inner space 12 may be various in addition to the cover 14 .

A mounting magnet 16 is provided on one outer surface of the housing 10 . A plurality of the mounting magnets 16 may be provided. The number of the mounting magnets 16 varies depending on the design conditions such as the size and weight of the vibrator 1 . A plurality of the mounting magnets 16 are installed on an outer surface of one side of the housing 10 at a predetermined interval. The mounting magnet 16 is also positioned in a groove formed on the outer surface of the housing 10 to be more firmly positioned in the housing 10 .

A first fixing plate 18 and a second fixing plate 18 ′ are installed in the inner space 12 to face each other. The first fixing plate 18 and the second fixing plate 18' are preferably made of a metal material. The first fixing plate 18 and the second fixing plate 18' are for firmly supporting the movable body 30 to be described below. The first fixing plate 18 and the second fixing plate 18' are not made separately from the housing 10, and a part of the housing 10 is formed with the first fixing plate 18 and the second fixing plate 18'. can be This is a case in which the rigidity of the housing 10 is such that separate first and second fixing plates 18 and 18 ′ are not needed. The first fixing plate 18 is fixed inside the housing 10 on the side where the mounting magnet 16 is located, and the second fixing plate 18 ′ is fixed to the inner surface of the cover 14 .

A permanent magnet 20 is installed on the first fixing plate 18 . The geometric center of the permanent magnet 20 is located at the geometric center of the first fixing plate 18 . The permanent magnet 20 is positioned to face the electromagnet 36 to be described below. One surface of the permanent magnet 20 is made to face the coil 37 of the electromagnet 36 in shape and size. The permanent magnet 20 generates attractive and repulsive forces between the electromagnet 36 and the movable body 30 to vibrate.

A plurality of movement guides 22 are installed between the first fixing plate 18 and the second fixing plate 18'. The number of the moving guides 22 varies according to the size or weight of the moving body 30 to be described below. At least three of the movement guides 22 are required. For example, if the first fixing plate 18 and the second fixing plate 18 ′ have a rectangular plate shape, it is preferable to use four moving guides 22 . The moving guide 22 is preferably in the shape of a rod.

A first elastic member 24 and a second elastic member 26 are installed on both sides of the movable guide 22 based on a movable base 32 to be described below. A cylindrical coil spring is used for the first elastic member 24 and the second elastic member 26 . The moving guide 22 passes through the center of the first elastic member 24 and the second elastic member 26 .

The first elastic member 24 and the second elastic member 26 facilitate the movement of the movable body 30 at the time point when the attractive force and the repulsive force between the electromagnet 36 and the permanent magnet 20 are replaced. It also serves to regulate the movement of the moving body 30 .

A moving body 30 is installed to move along the moving guide 22 . The movable body 30 has a movable base 32 . The movable base 32 has a predetermined plate shape. The moving base 32 has a guide through-hole 34 through which the moving guides 22 pass. A bushing 35 is installed in the guide through-hole 34 as shown in FIG. 2 . The inner surface of the bushing 35 is processed to be smooth so that friction with the movement guide 22 is minimized.

In the illustrated embodiment, the movable base 32 is located only on one side of the movable body 30 , but the movable base 32 may be located on both sides of the electromagnet 36 at the same time. Of course, in this case, it is absolutely necessary for the movable base 32 to be made of a material that does not serve as a magnetic path. Such a configuration is for the movable base 32 to allow the movement of the movable body 30 to occur in a balanced manner. In the illustrated embodiment, the thickness of the movable base 32 is relatively thin, but the movement of the movable body 30 is controlled by making the thickness of the movable base 32 relatively thick or by making the length of the bushing 35 longer. It is necessary to make it more stable to support.

Ends of the first elastic member 24 are respectively supported by the movable base 32 and the first fixing plate 18 . Ends of the second elastic member 26 are supported on the movable base 32 and the second fixing plate 18', respectively. Accordingly, when the movable base 32 moves toward the first fixing plate 18 , the first elastic member 24 is compressed and the second elastic member 26 is tensioned. Conversely, when the movable base 32 moves toward the second fixing plate 18', the second elastic member 26 is compressed and the first elastic member 24 is tensioned. As described above, while the first and second elastic members 24 and 26 are tensioned and compressed, the moving base 32 is stably reciprocated along the moving guide 22 . That is, the bushing 35 is to extend a predetermined length to the inside of the first elastic member 24 and the second elastic member (26).

An electromagnet 36 is installed on the movable base 32 to face the permanent magnet 20 . The electromagnet 36 is made by winding a coil 39 on an iron core 38 made by stacking a plurality of steel plates 38'. AC power is supplied to the coil 39 so that attractive and repulsive forces are alternately generated between the coil 39 and the permanent magnet 20 .

The planar configuration of the steel plate 38' is well illustrated in FIG. 3 . The steel plate 38' has a first extension part 41', a second extension part 42', and a third extension part 43' perpendicular to the connection part 40' extending in one direction at a predetermined interval. It is constructed and extended side by side. The iron core 38 made by laminating a plurality of steel plates 38 ′ of such a configuration also includes the connection part 40 and the first extension part 41 , the second extension part 42 and the third extension part orthogonal thereto ( 43) consists of The first extension part 41 , the second extension part 42 , and the third extension part 43 are perpendicular to the connection part 40 and extend in parallel with each other. The first to third extension parts 41 , 42 , 43 extend toward the permanent magnet 20 . A coil 39 is wound between the first to third extension parts 41 , 42 , 43 . Here, the iron core 38 becomes a path through which the magnetic flux of the magnetic field generated in the coil 39 flows.

A configuration of a vibration damping system in which the vibrator 1 having such a configuration is used will be described with reference to FIG. 4 . The vibration damping system of the embodiment of the present invention is configured to include a vibrator 1 , a vibration sensor 50 and a control unit 56 . In the vibration damping system, the vibrator 1 and the vibration sensor 50 are attached to the surface of the vibration source 54 and used, as shown in FIG. The vibration sensor 50 may be a movable coil type sensor, a piezoelectric sensor, a strain gauge sensor, a MEMS sensor, or the like. In particular, the MEMS sensor can be reduced in size compared to other sensors and can accurately measure even minute vibrations.

And, the vibration sensor 50 detects the frequency and phase of the vibration generated in the vibration source 54, and has the same frequency and canceling vibration having the opposite phase to the vibration generated in the vibration source 54. The vibration 1 is generated to attenuate the vibration generated in the vibration source 54 .

The vibration sensor 50 detects vibration on the surface of the vibration source 54 to generate a detection signal S1 and transmits the detection signal S1 to the controller 56 . The control unit 56 analyzes the received detection signal S1 and provides a control signal S3 for the operation of the vibrator 1 . That is, a command for the operation of the vibrator 1 is transmitted to the vibrator 1 . The vibrator 1 generates vibration in accordance with the signal emitted from the control unit 56 . The offset vibration generated by the vibrator 1 according to the signal output from the controller 56 has the same frequency and the opposite phase to the vibration generated from the vibration source 54 .

Meanwhile, the configuration of the control unit 56 will be described in more detail with reference to FIG. 5 .

The control unit 56 includes a signal amplifying unit 58 and a signal generating unit 59 . The signal amplifying unit 58 receives the detection signal S1 detected from the vibration sensor 50 and analyzes the frequency and phase of the vibration generated in the vibration source 54 to output it for visual identification, A value necessary for a calculation formula or algorithm pre-built in the signal generator 59 is derived. The signal amplifying unit 58 may output the value derived from the detection signal S1 to a separate output device such as a display, and the operator can easily check information related to vibration with the naked eye.

At the same time, the signal amplifying unit 58 analyzes the vibration generated from the vibration source in real time and transmits the generated analysis signal S2 to the signal generating unit 59 . Accordingly, the signal amplifying unit 58 enables the vibration damping system of the present invention to respond to the vibration generated by the vibration source 54 in real time.

When the analysis of the frequency and phase of the vibration generated on the surface of the vibration source 54 is completed in the signal amplifying unit 58, the analysis signal S2 outputted to the signal generating unit 59 is transmitted. The signal generating unit 59 receiving the analysis signal S2 from the signal amplifying unit 58 generates vibration having the same frequency as that of the vibration generated in the vibration source 54 but having an opposite phase. A control signal S3 is generated so that the vibrator 1 vibrates in response to the control signal S3, and a current is passed through the vibrator 1 to vibrate.

Specifically, the control signal S3 refers to an integrated current generated by adjusting the current strength and transmission period, and the frequency and phase of the vibration generated by the vibrator 1 through the current strength and transmission period, etc. is regulated A calculation formula or algorithm capable of deriving the control signal S3 from the analysis signal S2 may be previously input to the signal generator 59 .

Meanwhile, the controller 56 may further include a controller 60 to manually control the control signal S3 transmitted to the signal generator 59 . When the detection signal S1 detected from the vibration sensor 50 is analyzed by the signal amplifier 58 to generate the analysis signal S2, the information of the analysis signal S2 can be identified with the naked eye. It may be output through the output device. An operator may recognize the information output to the output device, and manually generate an appropriate control signal S3 using the controller 60 and transmit it to the vibrator 1 . The output device may be installed for the purpose of monitoring even if it is not a manual operation.

The control unit 56 may further include a power supply unit 61 for supplying power to the control unit 56 . The power supply unit 61 may supply power to the signal amplifier 58 , the signal generator 59 , and the controller 60 . The power supply unit 61 may be configured to include an entire energy storage device such as a battery, and may be installed inside or outside the control unit 56 to be electrically connected to the control unit 56 .

Hereinafter, the vibrator according to the present invention having the configuration as described above and a vibration damping device having the same will be described in detail.

The vibrator 1 of the present invention is mounted on the surface of the vibration source 54, for example, in the enclosure of a transformer. Since the enclosure of the transformer is made of a metal material, the mounting magnet 16 is firmly attached to the surface of the vibration source 54 . In order to separate the vibrator 1 from the vibration source 54 , a force greater than that of the mounting magnet 16 attached to the vibration source 54 may be applied.

6 and 7 , the vibrator 1 generates offset vibration by using the linear reciprocating motion of the movable body 30 . When the control signal S3 is provided from the control unit 56 to the coil 39 from the electromagnet 36 constituting the movable body 30 , the electromagnet 36 becomes magnetic. The strength of the magnetic force generated by the electromagnet 36 varies according to the specifications of the coil 39 , for example, thickness, the number of windings, and the strength of an applied current. The coil 39 is electrically connected to the control unit 56 so as to receive current from the control unit 56 , and the polarity in the electromagnet state is determined according to the direction in which the current flows.

A coil 39 is wound around the second extension part 42 in the iron core 38 , and the first extension part 41 and the third extension part 43 are connected to the second extension part 42 and extended side by side. The iron core 38 serves as a path through which the magnetic flux of the magnetic field moves, and the first extension part 41 and the third extension part 43 serve as a magnetic path that concentrates the magnetic field without spreading to the outside of the iron core 38 . do.

The permanent magnet 20 faces the ends of the extension parts 41 , 42 , 43 of the electromagnet 36 at a predetermined distance, and the permanent magnet 20 is a coil 39 of the electromagnet 36 . When a current is applied to and has a polarity, an attractive or repulsive force is generated between the electromagnet 36 and a driving force so that the movable body 30 can reciprocate.

The movable base 32 on which the electromagnet 36 is installed is made of a metal material and may be integrated with the iron core 38 . The moving base 32 reciprocates in a straight line along the moving guide 22, and the degree of movement toward the permanent magnet 20 is regulated by the first elastic member 24, and the second elastic member 26 ), the degree away from the permanent magnet 20 is regulated.

That is, the first elastic member 24 and the second elastic member 26 help the electromagnet 36 to repeat a linear reciprocating motion without being attached to the permanent magnet 20 . The first and second elastic members 24 and 26 provide elastic restoring force against the attractive or repulsive force acting between the permanent magnet 20 and the electromagnet 36 to the movable body 30 .

When an alternating current is applied to the electromagnet 36, attractive or repulsive force is alternately generated between the electromagnet 36 and the permanent magnet 20, and the first and second elastic members 24 and 26 are thus A driving force for reciprocating the movable body 30 is generated by the opposing elastic restoring force. Conversely, when the current is cut off in the electromagnet 36 , the first and second elastic members 24 and 26 return the movable body 30 to its initial position.

Operations of the first elastic member 24 and the second elastic member 26 will be described with reference to FIGS. 6 and 7 . When a current is applied to the electromagnet 36 and an attractive force is generated between the electromagnet 20 and the permanent magnet 20, as indicated by an arrow in FIG. 6, the first elastic member 24 is compressed, and the second elastic member ( 26) is tensioned. Accordingly, the movable body 30 moves in the direction of the permanent magnet 20 , but is not attached to the permanent magnet 20 , and as it approaches the permanent magnet 20 , the first elastic member 24 and the second elastic member Because of the restoring force of (26), the permanent magnet (20) receives a force to move away from the direction.

Since alternating current is applied to the electromagnet 36, when the phase is changed, a repulsive force is generated between the permanent magnet 20 and the electromagnet 36, and the movable body 30 becomes the permanent magnet as shown in FIG. It moves in a direction away from the magnet 20 . At this time, the first elastic member 24 is tensioned and the second elastic member 26 is compressed. Accordingly, when the phase of the alternating current is changed again, the movable body 30 can move in the direction of the permanent magnet 20 at any time.

Vibration generated in the vibration source 54 can be canceled by generating the vibration in the vibrator 1 in this way, which will be described in more detail. When vibration occurs in the vibration source 54 , the vibration sensor 50 detects it and transmits the detection signal S1 to the signal amplification unit 58 of the control unit 56 . The signal amplifier 58 that has received the detection signal S1 from the vibration sensor 50 analyzes the detection signal S1 and outputs it to the display to identify the frequency and waveform of the vibration while simultaneously outputting the analysis signal ( S2) is transferred to the signal generator 59 . The signal generator 59 interprets the analysis signal S2 to generate a control signal S3 having the same frequency as the vibration generated in the vibration source 54 but having a phase difference of 180°, The control signal S3 is transmitted to the vibrator 1 .

At this time, the signal amplification unit 58 generates an analysis signal S2 based on the detection signal S1 received from the vibration sensor 50 in real time, and a signal generator receiving the analysis signal S2 ( 59) also generates the control signal S3 in real time.

When a current according to the control signal S3 is applied to the vibrator 1 , the electromagnet 36 becomes magnetic, thereby generating a driving force having an attractive or repulsive force generated between the vibrator 1 and the permanent magnet 20 . do. Since the permanent magnet 20 is fixed to the housing 10, the movable body 30 is moved by a driving force, thereby generating offset vibration.

On the other hand, the vibrator 1 of the present invention can be easily attached to and detached from the vibration source 54 by using the mounting magnet 16 if the surface of the vibration source 54 is made of a metal material. Therefore, since no processing is required on the surface of the vibration source 54 , it can be mounted on the vibration source 54 without damage or structural change. Even in the case of separation from the vibration source 54 , only a force greater than the magnetic force of the mounting magnet 16 needs to be provided, so that the vibration source 54 is not damaged.

In addition, the vibrator 1 of the present invention can be easily attached by selecting a region in which vibration is particularly generated among the surfaces of the vibration source 54, so that it is possible to more efficiently remove vibration or noise.

In the above, even though all components constituting the embodiment according to the present invention have been described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more. In addition, terms such as "comprises", "comprises" or "have" described above mean that the corresponding component may be inherent, unless otherwise stated, excluding other components. Rather, it should be construed as being able to further include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Commonly used terms such as terms defined in the dictionary should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

1: vibrator 10: housing
12: inner space 14: cover
16: mounting magnet 18: first fixing plate
18': second fixing plate 20: permanent magnet
22: movement guide 24: first elastic member
26: second elastic member 30: movable body
32: moving base 34: guide through hole
35: bushing 36: electromagnet
38: iron core 39: coil
40: connection part 41: first extension part
42: second extension 43: third extension
50: vibration sensor 54: vibration source
56: control unit 58: signal amplification unit
59: signal generator 60: controller
61: power unit

Claims (12)

a vibration sensor that detects vibration generated from a vibration source and generates a detection signal;
a control unit receiving the detection signal and generating a control signal in real time;
According to the control signal, the electromagnet is compressed and stretched opposite to each other by generating an attractive force and a repulsive force between the electromagnet receiving the control signal by generating a canceling vibration having the same frequency and opposite phase to the vibration. It includes a vibrator that moves relative to each other between the first and second elastic members,
The vibrator includes a housing having an interior space and constituting an exterior,
A first fixing plate and a second fixing plate made of a metal material that are fixed to face each other and installed inside the housing;
a permanent magnet installed on the first fixed plate;
A moving body having an electromagnet facing the permanent magnet and reciprocating in a straight line by attractive and repulsive forces between the electromagnet and the permanent magnet;
A plurality of moving guides installed through the moving body to guide the linear reciprocating motion of the moving body, one end installed on the first fixed plate and the other end installed on the second fixed plate;
and a first elastic member and a second elastic member installed in the plurality of moving guides to set a region in which the movable body moves with respect to the permanent magnet and to provide an elastic force for reciprocating motion of the movable body,
The moving body includes a moving base through which the electromagnet and the electromagnet are installed and the moving guide passes through,
The first elastic member and the second elastic member are cylindrical coil springs through which the moving guide is installed through the center, and the first elastic member has one surface of the movable base and an end on the first fixed plate on which the permanent magnet is installed, respectively. and the second elastic member is supported at an end of the second fixing plate fixed to the other surface of the movable base and the inner surface of the housing opposite to the permanent magnet,
The first elastic member and the second elastic member is a vibration damping system in which compression and restoration occur alternately when the movable body moves in the direction of the permanent magnet and when it moves in the opposite direction of the permanent magnet.
According to claim 1, wherein the control unit
a signal amplifier receiving the detection signal and generating an analysis signal including a value required for a predetermined pattern or algorithm;
Vibration attenuation system including a signal generator for generating a control signal so that the vibrator generates the offset vibration based on the analysis signal.
The method according to claim 2, wherein the signal generator generates a control signal for the vibrator to generate a canceling vibration having the same frequency as the frequency of the vibration but having an opposite phase,
The control signal is a vibration damping system in which the frequency and phase of the offset vibration generated by the vibrator are adjusted by adjusting the intensity of the current applied to the vibrator and the transmission period.
The method of claim 3, wherein the control unit
a display for visually outputting the analysis signal generated by the signal amplifier;
Vibration attenuation system further comprising a controller capable of manually generating a control signal of the signal generator through the information output to the display.
The vibration damping system according to claim 1, wherein the vibration sensor is a MEMS sensor.
delete A housing having an interior space and constituting the exterior;
A first fixing plate and a second fixing plate made of a metal material that are fixed to face each other and installed inside the housing;
a permanent magnet installed on the first fixed plate;
A moving body having an electromagnet facing the permanent magnet and reciprocating in a straight line by attractive and repulsive forces between the electromagnet and the permanent magnet;
A plurality of moving guides installed through the moving body to guide the linear reciprocating motion of the moving body, one end installed on the first fixed plate and the other end installed on the second fixed plate;
and a first elastic member and a second elastic member installed in the plurality of moving guides to set a region in which the movable body moves with respect to the permanent magnet and to provide an elastic force for reciprocating motion of the movable body,
The moving body includes a moving base through which the electromagnet and the electromagnet are installed and the moving guide passes through,
The first elastic member and the second elastic member are cylindrical coil springs through which the moving guide is installed through the center, and the first elastic member has one surface of the movable base and an end on the first fixed plate on which the permanent magnet is installed, respectively. and the second elastic member is supported at an end of the second fixing plate fixed to the other surface of the movable base and the inner surface of the housing opposite to the permanent magnet,
The first elastic member and the second elastic member is an exciter in which compression and restoration occur alternately when the movable body moves in the direction of the permanent magnet and when it moves in the opposite direction of the permanent magnet.
delete 8. The method of claim 7, wherein the iron core constituting the electromagnet includes a connection portion seated on the movable base, and first, second, and third extension portions extending side by side in the direction of the permanent magnet from the connection portion, and the second extension An exciter with a coil wound on the part.
The vibrator according to claim 9, wherein a bushing having an inner surface is located in a guide through hole through which the moving guide passes through the moving base, and the bushing extends to the inside of the first and second elastic members.
delete [11] The vibrator according to any one of claims 7, 9, and 10, wherein a mounting magnet that is magnetically attached to the surface of the vibration source is installed on one side of the outer surface of the housing.

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