JP2019004611A - Wireless power supply and vibration suppressing device - Google Patents

Abstract

To provide a vibration suppressing device which can apply vibration suppressing parts of a voltage control type and operates with a wireless power supply.SOLUTION: A wireless power supply and a vibration suppressing device has a power transmission unit in a fixing portion, and a power reception unit in a vibration damping object. The power transmission unit has a reception unit receiving non-contact transmission data from the power reception unit, a control unit calculating power transmission voltage to the power reception unit by using received data, a transmission wave generation unit generating a carrier frequency, a transmission wave voltage change unit changing voltage of a transmission wave according to a calculation result, and a transmission power magnetic antenna wirelessly transmitting power. The power reception unit has a reception power magnetic antenna receiving the transmission wave, a detection rectification unit detecting rectification of a power reception signal, a control unit performing a vibration suppressing operation by using an output generated by the detection rectification unit, a sensor detecting a vibration amount, a transmission unit transmitting vibration data of the sensor to the reception unit, and a constant voltage generation unit generating required voltage as a power source of the sensor and the transmission unit by using the output generated by the detection rectification unit.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technique for suppressing vibration of a movable part using electric power supplied using wireless power feeding in a machine tool, a household appliance, or the like having a movable part, for example.

  Patent Document 1 describes a driving device and a driving method that realizes stable driving by non-contact power supply, and this driving device can adjust the rotation balance of a rotating body by a load device that is controlled in driving. Have been described.

JP 2011-097733 A

  In the technique described in Patent Document 1, a capacitor that is charged with power output from the smoothing rectifier circuit on the power receiving side, a regulator that steps down or boosts the voltage output from the smoothing rectifier circuit, and the regulator that outputs the voltage A control unit for monitoring a change in voltage and sending a control signal for controlling driving to the load device is provided, and the capacitor is continuously charged and discharged according to the voltage supplied to the load device without stopping the large load device. It is characterized by the fact that it is driven. Therefore, the load device that adjusts the rotation balance is limited to a device that operates at a constant voltage, and there is a problem that a device that controls the operation amount by voltage cannot be used. In addition, since the power to be supplied is basically constant, even if the supply voltage to the load device is controlled by charging and discharging the capacitor, there is a limit to the controllable region. Therefore, there is a restriction on the power consumed by the load device, and as a result, there is a problem that the balance adjustment amount, that is, the vibration suppression amount is also restricted.

  An object of the present invention is to provide a vibration suppression apparatus that operates by wireless power feeding and that can apply a voltage-controlled vibration suppression component with few restrictions on a vibration suppression device.

  The present application includes a plurality of means for solving at least a part of the above-described problems. Examples of such means are as follows. In order to solve the above problems, a wireless power feeding and vibration suppression device according to an aspect of the present invention includes a power transmission unit installed in a fixed unit, and a power reception unit installed in a movable vibration suppression object, The power transmission unit includes a reception unit that receives data transmitted from the power reception unit in a non-contact manner, a control unit that calculates a voltage transmitted to the power reception unit using sensor data received by the reception unit, and wireless power feeding A transmission wave generating unit that generates a carrier frequency used for transmission of the transmission wave, a transmission wave voltage changing unit that changes a voltage of the transmission wave generated by the transmission wave generating unit according to a calculation result of the control unit, and the transmission wave voltage A power transmission magnetic antenna that wirelessly transmits the transmission wave changed by the change unit, wherein the power reception unit receives a transmission wave transmitted from the power transmission magnetic antenna, and a power reception signal of the power reception magnetic antenna Detect rectification A detection rectification unit, a vibration suppression unit that performs a vibration suppression operation of the vibration suppression object using the output generated by the detection rectification unit, a sensor that detects a vibration amount of the vibration suppression object, and a vibration of the sensor A transmission unit that transmits data to the reception unit, and a constant voltage generation unit that generates a predetermined voltage necessary as a power source for the sensor and the transmission unit using an output generated by the detection rectification unit. It is characterized by.

  ADVANTAGE OF THE INVENTION According to this invention, there are few restrictions with respect to a vibration suppression device, and the vibration suppression apparatus which operate | moves by radio | wireless electric power feeding which can apply a voltage control type vibration suppression device can be provided. Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is a figure which shows the structural example of the radio | wireless electric power feeding and vibration suppression apparatus which concern on 1st embodiment of this invention. It is a figure which shows the structural example of the control circuit which concerns on this invention. It is a figure which shows the internal operation | movement waveform of a transmitter and a receiver. It is a figure which shows the internal operation | movement waveform of a transmitter and a receiver. It is a figure which shows the structural example of the wireless electric power feeding and vibration suppression apparatus which concern on 2nd embodiment of this invention. It is a figure which shows the operation | movement flow which concerns on 2nd embodiment of this invention. It is a figure which shows the structural example of the wireless electric power feeding and vibration suppression apparatus which concern on 3rd embodiment of this invention. It is a figure which shows the structural example of the variable transmission coil which concerns on 3rd embodiment of this invention. It is a figure which shows the structural example of the wireless electric power feeding and vibration suppression apparatus which concern on 4th embodiment of this invention. It is a figure which shows the detailed structural example of the radio | wireless electric power feeding and vibration suppression apparatus which concern on 4th embodiment of this invention. It is a figure which shows the internal operation waveform which concerns on 4th embodiment of this invention. It is a figure which shows the detailed structural example of the radio | wireless electric power feeding and vibration suppression apparatus which concern on 5th embodiment of this invention. It is a figure which shows the detailed structural example of the power receiving apparatus which concerns on 5th embodiment of this invention. It is a figure which shows the internal operation | movement waveform which concerns on 5th embodiment of this invention. It is a figure which shows the structural example of the damping device which concerns on 6th embodiment of this invention. It is a figure which shows the example of a structure from which the relative position of a power transmission apparatus and a power receiving apparatus changes.

  First Embodiment Hereinafter, a first embodiment according to the present invention will be described with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof may be omitted. Further, in the following embodiments, the constituent elements (including element steps) are not necessarily indispensable unless otherwise specified and clearly considered essential in principle. Needless to say. In addition, when referring to “consisting of A”, “consisting of A”, “having A”, and “including A”, other elements are excluded unless specifically indicated that only that element is included. It goes without saying that it is not what you do. Similarly, in the following embodiments, when referring to the shapes, positional relationships, etc. of the components, etc., the shapes are substantially the same unless otherwise specified, or otherwise apparent in principle. And the like are included.

  FIG. 1 is a diagram illustrating a configuration example of the wireless power feeding and vibration suppressing device according to the first embodiment of the present invention. The wireless power feeding and vibration suppression device includes a power transmission device 1, a power reception device 2, and a vibration suppression target 3 on which the power reception device 2 is installed. Although the power transmission apparatus 1 is fixed, it can be said that it is a fixed part connected to an external power source (not shown). The power receiving device 2 and the vibration suppression target 3 that are movable vibration suppression objects are, for example, rotating bodies and are in a movable state, and have a structure in which the power reception apparatus 2 and the target object 3 can rotate and vibrate together. is there. In addition, the power receiving device 2 and the target object 3 are not connected to an external power source, and all the circuits in the power receiving device 2 operate with electric power that is wirelessly fed from the power transmitting device 1. The wireless power feeding and vibration suppressing device is a device that suppresses vibration of the object 3 by the vibration control unit 23 incorporated in the power receiving device 2, and is a rotary tool that easily receives the benefit of a vibration suppressing function such as an electric drill. is there.

  [Description of Operation] First, the operation of the power transmission device 1 in this embodiment will be described. The data reception unit 13 of the power transmission device 1 receives data transmitted by non-contact communication from a data transmission unit 26 of the power reception device 2 described later. The transmitted / received data is sensor data obtained by measuring the vibration amount of the object 3 to be controlled, and the received vibration amount data is input to the control circuit 14.

  Next, the transmission wave generation unit 15 generates a transmission wave used for wireless power feeding power transmission. As a wireless power feeding method, either a so-called electromagnetic induction method or a magnetic resonance method may be used. For example, in the case of a magnetic resonance method, a frequency of 6.78 MHz (megahertz) or 13.56 MHz is generally used. Yes. The wireless power feeding method and frequency can be selected according to the design requirements of the power transmitting device 1 and the power receiving device 2. The output voltage from the transmission wave generating unit 15 is constant, and the voltage is changed in the voltage changing unit 11 according to the control signal of the control circuit 14. The control signal generated by the control circuit 14 will be described later.

  A transmission wave with a voltage change generated by the voltage changing unit 11 is input to the transmission coil 12 and radiated to the power receiving device 2 as a transmission wave for wireless power feeding. If the transmission coil 12 is a magnetic field resonance system, the inductance value and the additional capacitance value are designed so that the resonance frequency of the coil matches the transmission frequency, and the transmission coil 12 is high by resonating with the reception coil 21 of the power receiving device 2. Efficient wireless power feeding is possible. The transmission coil 12 is not limited to a coil, and may be a magnetic antenna.

  Next, the operation of the power receiving device 2 will be described. The reception coil 21 of the power receiving device 2 receives the power radiated from the transmission coil 12 of the power transmission device 1 as described above. If the receiving coil 21 is a magnetic field resonance system, an inductance value and an additional capacitance value are designed so that the resonance frequency of the coil is the same as the transmission frequency, similarly to the transmission coil 12. The receiving coil 21 is not limited to a coil, and may be a magnetic antenna.

  The reception wave received by the reception coil 21 is an alternating current having a transmission frequency. Therefore, the detection rectification unit 22 performs detection rectification to extract DC power. In the present invention, the type of the detection rectification unit 22 is not particularly limited, and for example, a general full wave rectification circuit may be used.

  About operation | movement of the power transmission apparatus 1 and the power receiving apparatus 2 so far, description of a transmission waveform is supplemented using FIG. FIG. 3 is a diagram illustrating internal operation waveforms of the transmission device and the reception device. In FIG. 3, (a) shows the transmission wave generated by the transmission wave generation unit 15, and the amplitude voltage from the ground serving as the center value is Va. It is assumed that the generated transmission wave is not particularly changed by the voltage changing unit 11 and is transmitted by the transmission coil 12 as it is.

  The reception coil 21 receives the transmission wave from the transmission coil 12 and inputs the reception wave shown in FIG. 3B to the detection rectification unit 22. In general, the amplitude voltage Vb at this time is not the same as Va, and differs depending on the transmission efficiency and the power receiving side impedance. If neither the transmission efficiency nor the power receiving side impedance changes, the amplitude voltage Va of the transmission wave and the amplitude voltage Vb of the reception wave have a proportional relationship. Subsequently, by rectifying the received wave of FIG. 3 (b) by the detection rectification unit 22, a rectified waveform that is a direct current of the voltage Vc shown in FIG. 3 (c) can be taken out.

  Here, the description returns to FIG. The output of the detection rectification unit 22, that is, the rectified waveform shown in FIG. 3B is input to the vibration suppression unit 23. The vibration suppression unit 23 is a device that is fixed to the vibration suppression object 3 and has a function of suppressing vibration of the object 3 by generating force (acceleration) in a direction opposite to the vibration of the object. In the present invention, the type of the damping unit 23 is not particularly limited, but for example, a voice coil or a piezo element can be applied. Further, the vibration damping unit 23 of the present invention is assumed to be a voltage drive type device, and the vibration suppression amount changes according to the input voltage. That is, if the voltage of the input waveform after rectification is high, the vibration suppression amount is large, and if it is low, the vibration suppression amount is small.

  In the present embodiment, the rectified waveform generated by the detection rectification unit 22 is not voltage-converted to obtain a desired input voltage, but the rectified waveform is directly input to the damping unit 23. Therefore, the voltage drive type vibration damping device can be used without increasing the circuit scale of the power receiving device 2.

  Further, the operation will be described. The rectified waveform that is the output of the detection rectification unit 22 is also input to the constant voltage generation unit 24. The constant voltage generation unit 24 generates and supplies a power supply constant voltage necessary for the operation of the sensor 25 such as the vibration sensor and the data transmission unit 26 from the rectified waveform. At this time, the voltage to be generated is not necessarily limited to one voltage. If the power supply voltages of the sensor 25 and the data transmission unit 26 are different, the constant voltage generation unit 24 generates a necessary voltage for each. . Even when the sensor 25 and the data transmission unit 26 require a plurality of power supply voltages, the constant voltage generation unit 24 generates each constant voltage.

  The sensor 25 is fixed to the object 3, measures the vibration of the object 3, and inputs the vibration amount to the data transmission unit 26 as data. The data transmission unit 26 transmits the input data using a wireless communication method. The data transmission unit 26 transmits data to the data reception unit 13 of the power transmission device 1. The type of the sensor 25 is not limited to vibration measurement, and it is only necessary to measure data that can generate a control signal for the vibration damping unit 23 as a result. For example, it is conceivable to measure the strain of the object 3 and use it for damping.

  The configuration and operation of the wireless power feeding and vibration suppression device according to the first embodiment have been described above. Here, the operation | movement which suppresses the vibration of the target object 3 which is the objective of a vibration suppression apparatus is demonstrated in detail using FIG.

  FIG. 4 is a diagram illustrating internal operation waveforms of the transmission device and the reception device. The graph shown in FIG. 4A shows vibration data of the object 3 measured by the sensor 25. In FIG. 4A, the horizontal axis represents time, and the vertical axis represents the vibration amount. The vibration amount fluctuates as a sine wave with time, and a constant bias is applied in the negative direction. In order to suppress this vibration, the vibration control unit 23 may be operated in a direction opposite to the vibrating direction. Therefore, if the vibration control unit 23 generates the operation shown in FIG. 4B so that the phase is opposite to that of FIG. 4A, that is, if the voltage shown in FIG. I can shake it.

  For this purpose, first, the control circuit 14 of the power transmission device 1 needs to generate the waveform of FIG. 4B from the waveform of FIG. An example of the control circuit 14 for generating such a waveform is shown in FIG.

  FIG. 2 is a diagram showing a configuration example of a control circuit according to the present invention. In FIG. 2, the input unit 1400 receives an input from the data receiving unit 13. The output unit 1401 performs output to the voltage changing unit 11. Data input from the data receiving unit 13 is integrated by the integrator 140 and amplified by the amplifier 141 with a predetermined gain. Further, the high-pass filter 142 and the low-pass filter 143 remove noise in a band unnecessary for control from the data acquired by the sensor 25.

  Subsequently, the amplifier 144 amplifies the sensor data with a predetermined gain, and integrates with the integrator 146 through the high-pass filter 145. Then, it passes through the high-pass filter 147 and the low-pass filter 148 and is output from the output unit 1401 as a control signal. The high-pass filters 145 and 147 and the low-pass filter 148 are used to remove signals in an unnecessary band outside the operating frequency band of the damping unit 23 when the signal is finally input to the damping unit 23. ing. The configuration of the control circuit 14 described above is an example, and there is no problem even if another configuration for generating a control signal that suppresses the generated vibration is used.

  As described so far, the control circuit 14 uses the vibration data shown in FIG. 4A received by the data receiving unit 13 to control the control signal (FIG. 4B) to be input to the damping unit 23. Signal). If the power transmitting device 1 and the power receiving device 2 are connected by wire, the signal in FIG. 4B may be directly input to the vibration control unit 23. However, the present invention is based on the premise that the power transmission device 1 and the power reception device 2 cannot be connected by wire. For this purpose, the control signal FIG. 4B is transmitted to the power reception device 2 via the wireless power feeding operation.

  FIG. 4C shows a waveform of a transmission wave serving as a carrier wave generated by the transmission wave generation unit 15. The waveform shown in FIG. 4C is a constant frequency having a predetermined cycle of the amplitude voltage Va, and is a waveform of a predetermined voltage. In the voltage changing unit 11, the voltage of the transmission wave shown in FIG. 4C is changed according to the control signal shown in FIG. 4B, and the transmission wave after the voltage change shown in FIG. 4D is generated. Is done. The generated transmission wave after voltage change in FIG. 4D is input to the transmission coil 12. At this time, the envelope of FIG. 4 (d) coincides with FIG. 4 (b).

  The operation after the transmission wave is transmitted from the transmission coil 12 is the same as described with reference to FIG. 3, and the reception wave received by the reception coil 21 of the power receiving device 2 is rectified by the detection rectification unit 22. Then, the waveform after rectification shown in FIG. 4E is input to the vibration control unit 23. Originally, when the control signal of FIG. 4B is input to the vibration control unit 23, the vibration control unit 23 operates in a direction to cancel the vibration shown in FIG. Things that can be done.

  Here, when comparing the waveforms of FIG. 4B and FIG. 4E, the maximum voltage V141 of FIG. 4B and the maximum voltage V221 of FIG. 4E are not necessarily the same. Also, the minimum voltage V142 in FIG. 4B and the maximum voltage V222 in FIG. 4E are not necessarily the same. This is because, as described with reference to FIG. 3, the transmission wave voltage and the reception wave voltage vary depending on the relationship with the transmission efficiency and the power receiving side impedance. In this case, if FIG. 4B is input to the damping unit 23, the vibration of the object 3 can be completely suppressed theoretically, but the voltage of FIG. 4E is the same as that of FIG. Since it is slightly different, there is a concern that the vibration of the object 3 is not completely suppressed and remains.

  However, the vibration remaining on the object 3 is measured by the sensor 25 and the vibration data is transmitted to the control circuit 14 via the data transmission unit 26 and the data reception unit 13. A control signal for vibration suppression is calculated again. Then, a feedback loop is formed in which the control signal is input to the damping unit 23 via the voltage changing unit 11, the transmission coil 12, the receiving coil 21, and the detection rectification unit 22, and a damping operation is performed.

  This feedback loop converges so that the voltage of FIG. 4B is generated so that FIG. 4E becomes a voltage necessary for completely suppressing the vibration, and FIG. The vibration of the object 3 can be suppressed by the damping unit 23 using the rectified waveform shown in FIG.

  In addition, the control circuit 14 generates a control signal using the vibration amount data measured by the sensor 25 and changes the voltage in the voltage changing unit 11, thereby changing the amount of power wirelessly fed from the power transmitting device 1 to the power receiving device 2. Therefore, it becomes possible to use the vibration control unit 23 that consumes a large amount of power to be consumed, and the restriction on the amount of vibration suppression can be reduced.

  Further, even if the voltage of the rectified waveform of the detection rectification unit 22 fluctuates as shown in FIG. 4E, the constant voltage generation unit 24 always supplies the necessary power supply voltage to the sensor 25 and the data transmission unit 26. Therefore, the sensor 25 and the data transmission unit 26 can always operate normally.

  As described above, it has been described that the vibration of the object 3 can be suppressed by the vibration control unit 23 using the post-rectification waveform shown in FIG.

  In addition, in the present invention, it is possible to suppress the vibration of the object 3 under specific conditions even if the transmission efficiency and the power receiving side impedance fluctuate. Details thereof will be described below.

  For example, when the target object 3 and the power receiving device 2 associated therewith are rotating bodies, it is expected that the transmission efficiency varies according to the rotation. Variations in transmission efficiency are caused by variations in the distance between the transmission coil 12 and the reception coil 21, relative positional shift due to the eccentricity of the transmission coil 12 and the reception coil 21, asymmetry of the shapes of the transmission coil 12 and the reception coil 21, This occurs when the coupling coefficient of the transmission coil 12 and the reception coil 21 varies, and the frequency of the variation is the same as the rotation frequency.

  In addition, the coupling coefficient also fluctuates due to foreign matter adhering to the transmission coil 12 and the reception coil 21. In such a case, the ratio of the amplitude voltage Va in FIG. 3A and the amplitude voltage Vb in FIG. 3B varies according to the rotation frequency.

  On the other hand, the vibration frequency of the object 3 shown in FIG. 4A is generally considered to be a product of the rotation frequency and the number of vibration generation factors. For example, if the object 3 is a rotary cutting tool, the cutting incisor corresponds to a vibration generating factor. Assuming that the number of rotations is 100 Hz and the number of incisors is 10, vibrations with a fundamental frequency of 100 Hz × 10 = 1000 Hz are expected to occur. In order for the sensor 25 to correctly measure the occurrence of the 1000 Hz vibration, it is necessary to measure at a sampling frequency that is twice or more the vibration frequency according to the sampling theorem. In other words, the minimum sampling frequency of the sensor 25 with which the present invention operates correctly is the number obtained by multiplying the number of rotations of the rotary tool, the number of incisors by two. In addition, when the vibration generation factor is not clear, for example, when the vibration suppression target 3 is a simple rotating body, it is preferable to measure at a sampling frequency that is twice or more the rotational frequency.

  If vibration is measured by the sensor 25 using the above-mentioned minimum sampling frequency, the amount of vibration can be correctly grasped, and the vibration frequency is faster than the fluctuation frequency of the transmission efficiency. Convergence of the control signal generated by the control circuit 14 can be expected, and vibration of the object 3 can be suppressed by the vibration control unit 23.

  The power transmission device 1 and the power reception device 2 according to the first embodiment have been specifically described above. According to the power transmission device 1 and the power reception device 2 according to the first embodiment, it is possible to provide a vibration suppression device that operates by wireless power feeding, to which a voltage-controlled vibration suppression component can be applied. The present invention is not limited to the first embodiment, and it goes without saying that various changes can be made without departing from the scope of the invention. Subsequently, a second embodiment of the present invention will be described with reference to FIG.

  Second Embodiment FIG. 5 is a diagram illustrating a configuration example of a wireless power feeding and vibration suppression device according to a second embodiment of the present invention. The difference from the first embodiment shown in FIG. 1 is that the voltage monitoring unit 243, the charging unit 244, the secondary battery 240, the first switch 241, the second switch 242, and the control on the power receiving side. The circuit 200 is added, and the power supplied to the constant voltage generation unit 24 can be switched to the secondary battery.

  In the first embodiment, the rectified waveform generated by the detection rectification unit 22 is directly input to the constant voltage generation unit 24. For this reason, if the voltage of the rectified waveform becomes equal to or lower than the input voltage of the constant voltage generator 24, the constant voltage generator 24 cannot supply power to the sensor 25 and the data transmitter 26. Therefore, the problem that the sensor 25 and the data transmission part 26 cannot operate | move could generate | occur | produce. In the second embodiment, a secondary battery 240 is added in preparation for when the voltage of the waveform after rectification drops, so that the operation of the constant voltage generator 24 is not hindered. Hereinafter, the operation flow of the second embodiment will be described with reference to FIG.

  FIG. 6 is a diagram showing an operation flow according to the second embodiment of the present invention. Although not shown in FIG. 5, the control circuit 200 on the power receiving side is connected to each of the voltage monitoring unit 243, the charging unit 244, the secondary battery 240, the first switch 241, and the second switch 242. It is possible to determine the state of each part or each circuit and control each part or each circuit.

  First, the control circuit 200 on the power receiving side starts operation in step S2401, and first sets the first switch 241 to “OFF” and the second switch 242 to “ON” as initial states to generate a constant voltage. The unit 24 starts to be supplied with power from the secondary battery 240 (step S2402).

  Subsequently, the control circuit 200 on the power receiving side sets a flag in the interrupt permission state (step S2403). Here, the interrupt processing permitted by the control circuit 200 on the power receiving side is the interrupt processing shown in steps S2421 to S2424. Here, interrupt processing will be described.

  The condition for interruption is that the output voltage Vc of the detection rectification unit 22 is constantly monitored by the voltage monitoring unit 243, and Vc is lower than the rated minimum input voltage Vdcdc of the constant voltage generation unit 24 (step S2421). .

  When the condition for interruption is satisfied, the control circuit 200 on the power receiving side stops the operation of charging the secondary battery 240 from the charging unit 244 (step S2422). Then, the control circuit 200 on the power receiving side sets the first switch 241 to “OFF” and the second switch 242 to “ON”, and supplies power from the secondary battery 240 to the constant voltage generation unit 24. (Step S2423). This operation corresponds to a state in which V222 in FIG. 4E has a very low voltage. In this case, the power supply of the constant voltage generation unit 24 is switched to the secondary battery 240, and the constant voltage generation unit 24 is switched. The output voltage is intended to continue normally. Finally, the interrupt process ends in step S2424.

  Returning to the main flow, the control circuit 200 on the power receiving side outputs the output voltage Vc of the detection rectifier 22 and the chargeable voltage Vcharge of the secondary battery 240 (Vcharge is the minimum voltage required for charging the secondary battery 240). Are compared (step S2404).

  When Vc is equal to or lower than Vcharge (in the case of “no” in step S2404), the charging operation to the secondary battery 240 cannot be performed due to insufficient voltage of Vc, and the power receiving side control circuit 200 increases Vc. Wait until.

  When Vc exceeds Vcharge (in the case of “yes” in step S2404), the power receiving side control circuit 200 advances the control to step S2405. Needless to say, Vdcdc must be designed to have a lower voltage than Vcharge in order to prevent a situation in which both constant voltage generation unit 24 and charging unit 244 cannot operate. .

  The control circuit 200 on the power receiving side detects whether or not the secondary battery 240 is in a fully charged state (step S2405). In the fully charged state (in the case of “yes” in step S2405), the power receiving side control circuit 200 returns control to step S2404 because charging is unnecessary.

  When the battery is not fully charged (in the case of “no” in step S2405), the power receiving side control circuit 200 sets the first switch 241 to “ON” and the second switch 242 to “OFF”. The constant voltage generator 24 is supplied with power from the detection rectifier 22.

  Then, the control circuit 200 on the power receiving side operates the charging unit 244 to charge the secondary battery 240 (step S2407).

  Subsequently, the control circuit 200 on the power receiving side determines whether or not the secondary battery 240 is in a fully charged state (step S2408). If the battery is not fully charged (in the case of “no” in step S2408), control circuit 200 on the power receiving side returns control to step S2408 after a predetermined time has elapsed.

  When the battery is fully charged (in the case of “yes” in S2408), the control circuit 200 on the power receiving side stops the charging unit 244 and ends the charging of the secondary battery 240 (step S2409). Then, the power receiving side control circuit 200 returns the control to step S2404.

  When the output voltage of the detection rectification unit 22 decreases due to the processing flow described above, the output of the secondary battery 240 is supplied to the constant voltage generation unit 24 so that the constant voltage generation unit 24 can stably Power can be supplied to the data transmission unit 26.

  [Third Embodiment] Next, a third embodiment of the present invention will be described with reference to FIGS.

  FIG. 7 is a diagram illustrating a configuration example of the wireless power feeding and vibration suppressing device according to the third embodiment of the present invention. The difference from the first embodiment shown in FIG. 1 is that the voltage changing unit 11 is not provided in the power transmission device 1 and the transmission coil 12 is changed to the variable transmission coil 120.

  As described above, when the transmission efficiency between the transmission coil 12 and the reception coil 21 changes, the amplitude voltage Va of the transmission coil 12 shown in FIG. 3A and the amplitude voltage of the reception coil 21 shown in FIG. The ratio to Vb changes. In the third embodiment, using this phenomenon, the transmission coil 12 is replaced with the variable transmission coil 120 to intentionally change the transmission efficiency between the variable transmission coil 120 and the reception coil 21, and the reception coil 21 receives the signal. Change the amplitude voltage. An example of the variable transmission coil 120 is shown in FIG.

  FIG. 8 is a diagram illustrating a configuration example of a variable transmission coil according to the third embodiment of the present invention. FIG. 8A shows an example in which the input terminal 1201, the variable capacitor 1202, and the coil 1200 are configured. The variable transmission coil 120 is a series-type resonance circuit, and the resonance frequency f is obtained from the capacitance value C of the variable capacitor 1202 and the inductance value L of the coil 1200 by Expression (1).

・・・式（１）

... Formula (1)

  In the case of magnetic resonance type wireless power feeding, the transmission efficiency is highest when the resonance frequency of the variable transmission coil 120 and the resonance frequency of the reception coil 21 are the same, and the transmission efficiency decreases when the resonance frequencies are different. Therefore, the capacitance value C of the variable capacitor 1202 is set so that the resonance frequency is the same in the state where the control voltage V141 shown in FIG. 4B is maximized, and the control is performed as indicated by V142 in FIG. 4B. When the voltage is low, the capacitance value C of the variable capacitor 1202 is changed to intentionally make the resonance frequency of the variable transmission coil 120 different from the resonance frequency of the reception coil 21.

  On the receiving coil 21 side, the transmission efficiency is highest when the resonance frequency is the same as that of the variable transmission coil 120, the voltage of the reception waveform is also highest, and the transmission efficiency decreases when the resonance frequency of the variable transmission coil 120 is shifted. For this reason, if the resonance frequency of the variable transmission coil 120 is intentionally different from the resonance frequency of the reception coil 21, the voltage of the reception wave system also decreases. Therefore, by performing the control as described above, the waveform input to the variable transmission coil 120 is kept at a constant voltage as shown in FIG. 4C, and the reception waveform of the reception coil 21 is set as shown in FIG. It can be changed. By obtaining the received waveform of FIG. 4D, the rectified waveform of FIG. 4E, which is rectified by the detection rectification unit 22, is input to the vibration suppression unit 23, as in the first embodiment. Thus, vibration of the object 3 can be suppressed.

  FIG. 8B shows another configuration example of the variable transmission coil 120, which includes an input terminal 1201, a high frequency switch 1204, a capacitor group 1205, and a coil 1200. The capacitor group 1205 includes a plurality of capacitors having different capacitance values connected in parallel, and one or more of the capacitors are connected by a high-frequency switch 1204 so that the total capacitance value including the high-frequency switch 1240 and the capacitor group 1205 is obtained. Can be changed discretely. Therefore, by performing the same control as in FIG. 8A, the waveform input to the variable transmission coil 120 is kept at a constant voltage as shown in FIG. 4), and the vibration of the object 3 can be suppressed by inputting the waveform of FIG. 4E, which is the rectified waveform of the detection rectification unit 22, to the vibration suppression unit 23.

  The configuration and operation of the variable transmission coil 120 have been described above. That is, the same effect can be obtained by using the variable transmission coil 120 without using the voltage changing unit 11. However, the present invention is not limited to this example, and the variable transmission coil 120 can change the reception waveform of the reception coil 21 as shown in FIG. 4D while keeping the input waveform at a constant voltage as shown in FIG. For example, a different configuration may be used. For example, the variable capacitor 1202 may be changed to a fixed capacitor having a fixed capacitance value so that the inductance value of the coil 1200 is variable. As an example of this, a configuration is conceivable in which a contact is provided in the middle other than both ends of the coil 1200, and the inductance value can be changed by changing the contact using a switch. The above is the third embodiment.

  [Fourth Embodiment] Next, a fourth embodiment of the present invention will be described with reference to FIGS.

  FIG. 9 is a diagram illustrating a configuration example of the wireless power feeding and vibration suppressing device according to the fourth embodiment of the present invention. A difference from the first embodiment shown in FIG. 1 is that a unipolar conversion unit 16 that converts the polarity of the control signal generated by the control circuit 14 is added in the power transmission device 1, and the rectified waveform of the power reception device 2 is This is the addition of an ambipolar converter 27 for converting the polarity. A more detailed configuration and operation will be described with reference to FIGS.

  FIG. 10 is a diagram illustrating a detailed configuration example of the wireless power feeding and vibration suppressing device according to the fourth embodiment of the present invention. First, a unipolar conversion unit 16 is added to the power transmission device 1. This unipolar conversion unit 16 is configured by an electronic circuit, and when the output of the control circuit 14 is a signal having a positive voltage and a negative voltage, that is, a voltage having both polarities, the output is only one side of the positive voltage. It is a circuit for converting into a polar signal.

  FIG. 11 is a diagram showing internal operation waveforms according to the fourth embodiment of the present invention. FIG. 11A shows the vibration data of the vibration suppression target 3 measured by the sensor 25, as in FIG. 4A. Also in FIG. 11A, the horizontal axis represents time, and the vertical axis represents the vibration amount. 4A is the same as that shown in FIG. 4A in that the vibration amount fluctuates as a sine wave with the passage of time. . In this state, to suppress the vibration of the object 3, the voltage shown in FIG.

  For this purpose, it is necessary to generate a waveform including a negative side voltage in the power receiving device 2, but the detection rectifier 22 shown in FIG. 1 can generate only a positive side voltage. In order to solve this problem, the waveform of FIG. 11B is offset to the positive voltage side to be converted into a control signal of only the positive side voltage, and is offset by offsetting to the negative voltage side on the power receiving device 2 side after wireless power feeding. A signal is obtained.

  First, the unipolar converter 16 adds a plus voltage to the control signal in FIG. 11B, and converts it to the unipolar control signal shown in FIG. 11C so that the entire control signal is on the plus side. . Subsequently, the voltage changing unit 11 changes the voltage of the transmission wave shown in FIG. 11 (d) in accordance with the control signal shown in FIG. 11 (c), and transmits after the voltage change shown in FIG. 11 (e). A wave is generated and input to the transmission coil 12. At this time, the envelope of FIG. 11 (e) coincides with FIG. 12 (c).

  In the power receiving device 2, the operations up to the reception coil 21 and the detection rectification unit 22 are the same as those in the first embodiment. The rectified waveform generated by the detection rectification unit 22 is as shown in FIG. 11 (f), and is input to the constant voltage generation unit 24 and also to the positive voltage generation unit 290, the negative voltage generation unit 291, and the subtraction unit 292. Entered.

  The subtracting unit 292 has a circuit having an internal configuration shown in FIG. The subtraction unit 292 has a positive power source and a negative power source, and outputs a result obtained by subtracting the second input voltage from the first input voltage. The relationship between input and output voltages is expressed by the following equation (2). Note that Vo is an output voltage, V1 is a first input voltage, and V2 is a second input voltage.

V = Ro / Ri × (V1−V2) Equation (2)

  The positive voltage generation unit 290 and the negative voltage generation unit 291 generate and supply predetermined voltages necessary for the plus power source and the minus power source of the subtraction unit 292, respectively. For example, if the necessary power source of the subtracting unit 292 is ± 15 V (volts), the positive voltage generating unit 290 always outputs +15 V, and the negative voltage generating unit 291 always outputs −15 V. The generated voltage of the negative voltage generator 291 is also input to the input 2 of the subtractor 292. Therefore, the control signal in FIG. 12G can be obtained by subtracting a constant voltage from the rectified waveform shown in FIG. By inputting the control signal of FIG. 12G to the vibration control unit 23, vibration of the object 3 can be suppressed.

  As described above, according to the fourth embodiment of the present invention, a waveform including a negative voltage can be generated and the vibration control unit 23 can be operated. It is possible to use a vibration damping device having the characteristics described above.

  Fifth Embodiment A fifth embodiment, which is a modification of the fourth embodiment of the present invention shown in FIG. 9, will be described with reference to FIGS.

  FIG. 12 is a diagram showing a detailed configuration example of the wireless power feeding and vibration suppressing device according to the fifth embodiment of the present invention. Since the configuration and operation of the power transmission device 1 are the same as those in the fourth embodiment, description thereof is omitted. The difference from the fourth embodiment is that, in the power receiving device 2, the reception coil 21 is changed to the center tap reception coil 210, and the negative voltage generation unit 291 is changed to the smoothing unit 293. . A more detailed circuit configuration of the center tap receiving coil 210 and the detection rectification unit 22 will be described with reference to FIG.

  FIG. 13 is a diagram illustrating a detailed configuration example of the power receiving device according to the fifth embodiment of the present invention. In FIG. 13, the center tap receiving coil 210 has the coil middle point drawn out to be the ground of the power receiving device 2, and both ends of the coil are connected to the detection rectification unit 22. By this connection, the detection rectification unit 22 can output a plus voltage and a minus voltage as a rectified waveform. That is, the center tap receiving coil 210 receives the transmission wave transmitted from the transmitting coil 12 and outputs a potential reference point, a voltage higher than the potential reference point, and a voltage lower than the potential reference point. It can be said that this is a bipolar power receiving magnetic antenna.

  FIG. 14 is a diagram showing internal operation waveforms according to the fifth embodiment of the present invention. Fig. 14 (f) shows a waveform after positive rectification, Fig. 14 (g) shows a waveform after negative rectification, and the envelope detection rectification on the positive side of Fig. 14 (e), which is a reception waveform of the center tap receiving coil. Waveform and negative envelope detection rectification waveform.

  An example of the configuration of the smoothing unit 293 is shown in FIG. 13, and is a circuit that converts an AC waveform into a DC waveform using a diode, a coil, and a capacitor. The smoothing unit 293 smoothes the negative-side rectified waveform shown in FIG. 14G and outputs a constant negative voltage −V82 indicated by a dotted line. This constant negative voltage is supplied to the negative power source of the subtractor 292 and also input to the input 2 of the subtractor 292. Therefore, the control signal shown in FIG. 14H can be obtained by subtracting a constant voltage from the rectified waveform shown in FIG. 14F according to the equation (2). By inputting the control signal of FIG. 14H to the vibration control unit 23, vibration of the object 3 can be suppressed.

According to the present embodiment, since a waveform including a negative voltage can be generated and the damping unit 23 can be operated, it is possible to apply a device having bipolar input characteristics to the damping unit 23. Become.

  [Sixth Embodiment] Next, a sixth embodiment of the present invention will be described with reference to FIG.

  FIG. 15 is a diagram illustrating a configuration example of a vibration damping device according to the sixth embodiment of the present invention. In the fourth and fifth embodiments, the control signal is unipolar-converted in the power transmission device 1 for the state where the vibration straddling the center as shown in FIG. In the power receiving device 2, it has been dealt with by converting to bipolar. The configuration of the vibration control unit 23 in this case can be considered as a model corresponding to FIG.

  In FIG. 15A, a damping mass member 230 is connected to the inside of the damping object 3 via a spring portion 231, a damping portion 232, and an operating portion 233 that are elastic bodies. When a control signal is input to the actuating unit 233, an actuating force corresponding to the voltage is generated, and the vibration amount and time change are determined by the actuating force and the time constants of the spring unit 231 and the damping unit 232.

  Normally, the center (center of gravity) of the damping mass member 230 is installed in line with the center line of the object 3 so that the entire object can be balanced without any input to the operating unit 233. In this case, the generated vibration is a vibration straddling the center as shown in FIG. 11A, and the control signal to be input to the operating unit 233 is required to be bipolar.

  In contrast, in the sixth embodiment, the center (center of gravity) of the damping mass member 230 is offset from the center line of the object 3 as shown in FIG. In this case, in order to suppress the vibration by balancing the entire object 3 and the vibration control unit 23, a certain amount of operation is always generated in the operation unit 233, and the vibration control mass member 230 is attached to the object 3. Need to move to centerline. That is, since the required control signal requires only a unipolar signal as shown in FIG. 4B, the circuit configuration corresponding to only the unipolar as shown in the first embodiment. Even so, the vibration of the object 3 can be suppressed without any problem.

  Furthermore, although the above-described embodiment has described an example in which the power receiving device 2 and the vibration suppression target 3 are rotating bodies, the embodiment is not necessarily limited to rotating bodies. For example, it is also effective in a configuration in which the power receiving device 2 does not rotate with respect to the power transmitting device 1 but the relative position changes. FIG. 16 illustrates an example of a relative position change between the power transmission device 1 and the power reception device 2.

  FIG. 16 is a diagram illustrating an example of a configuration in which the relative position between the power transmission device and the power reception device is changed. 16A shows a steady state, FIG. 16B shows a state where the power receiving device 2 can move in the direction in which the distance between the transmission coil 12 and the receiving coil 21 changes, and FIG. 16C shows the power receiving device 2. Shows a state in which the center of the transmission coil 12 and the reception coil 21 can move in a direction deviating. In the states of FIG. 16B and FIG. 16C, the coupling coefficient also fluctuates due to changes in the distance and relative position between the power transmission coil 12 and the receiving coil 21, but the sensor 25 is sampled earlier than the fluctuation of the coupling coefficient. By doing so, vibration can be suppressed. In addition, even when the relative position between the power transmitting device 1 and the power receiving device 2 does not change, it goes without saying that the effect of suppressing vibration can be obtained by performing the same control as in the above embodiment.

  The above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to the one having all the configurations described. A part of the configuration of the embodiment can be replaced with another configuration, and the configuration of the other embodiment can be added to the configuration of the embodiment. Further, it is possible to delete a part of the configuration of the embodiment.

  Each of the above-described units, configurations, functions, processing units, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. Further, each of the above-described units, configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files for realizing each function can be stored in a recording device such as a memory or a hard disk, or a recording medium such as an IC card, SD card, or DVD.

  In addition, the control line and information line concerning embodiment mentioned above have shown what is considered necessary for description, and do not necessarily show all the control lines and information lines on a product. Actually, it may be considered that almost all the components are connected to each other. In the above, this invention was demonstrated centering on embodiment.

DESCRIPTION OF SYMBOLS 1 ... Power transmission apparatus, 2 ... Power receiving apparatus, 3 ... Object, 13 ... Data receiving part, 14 ... Control circuit, 15 ... Transmission wave generation part, 11 ... Voltage Change part, 12 ...
Transmitting coil, 21 ... receiving coil, 22 ... detection rectification unit, 23 ... vibration control unit, 24 ... constant voltage generation unit, 25 ... sensor, 26 ... data transmission unit

Claims (13)

A power transmission unit installed in a fixed unit;
A power receiving unit installed on the movable vibration control object,
The power transmission unit
A receiving unit that receives data transmitted in a non-contact manner from the power receiving unit;
A control unit that calculates a voltage to be transmitted to the power receiving unit using sensor data received by the receiving unit;
A transmission wave generation unit that generates a carrier frequency used for transmission of wireless power feeding;
A transmission wave voltage changing unit that changes a voltage of the transmission wave generated by the transmission wave generating unit according to a calculation result of the control unit;
A power transmission magnetic antenna for wirelessly transmitting the transmission wave changed by the transmission wave voltage changing unit,
The power receiving unit
A power receiving magnetic antenna for receiving a transmission wave transmitted from the power transmitting magnetic antenna;
A detection rectification unit for detecting and rectifying the received signal of the receiving magnetic antenna;
A vibration suppression unit that performs a vibration suppression operation of the vibration suppression object using the output generated by the detection rectification unit;
A sensor for detecting a vibration amount of the vibration suppression object;
A transmitter that transmits vibration data of the sensor to the receiver;
A constant voltage generation unit that generates a predetermined voltage necessary as a power source for the sensor and the transmission unit using the output generated by the detection rectification unit;
A wireless power feeding and vibration suppressing device. The wireless power feeding and vibration suppressing device according to claim 1,
The power receiving unit
A rechargeable battery that can be charged and discharged;
A charging unit that performs a charging operation of the secondary battery using the detection rectification output generated by the detection rectification unit;
A voltage monitoring unit for monitoring the voltage of the detection rectification output;
A switching unit that selects either the detection rectification output or the discharge output of the secondary battery and supplies power to the constant voltage generation unit;
A wireless power feeding and vibration suppressing device comprising: The wireless power feeding and vibration suppressing device according to claim 1,
The power receiving unit
A rechargeable battery that can be charged and discharged;
A charging unit that performs a charging operation of the secondary battery using the detection rectification output generated by the detection rectification unit;
A voltage monitoring unit for monitoring the voltage of the detection rectification output;
A switching unit that selects either the detection rectification output or the discharge output of the secondary battery and supplies power to the constant voltage generation unit, and
When the voltage of the detection rectification output monitored by the voltage monitoring unit is lower than the rated input voltage of the constant voltage generation unit, the switching unit selects the discharge output of the secondary battery,
A wireless power feeding and vibration suppressing device. The wireless power feeding and vibration suppressing device according to claim 1,
The power receiving unit
A rechargeable battery that can be charged and discharged;
A charging unit that performs a charging operation of the secondary battery using the detection rectification output generated by the detection rectification unit;
A voltage monitoring unit for monitoring the voltage of the detection rectification output;
A switching unit that selects either the detection rectification output or the discharge output of the secondary battery and supplies power to the constant voltage generation unit, and
When the voltage of the detection rectification output monitored by the voltage monitoring unit exceeds the rated input voltage of the constant voltage generation unit, the switching unit selects the detection rectification output, and the secondary battery is fully charged. If it is not in a state, the secondary battery is charged by the charging unit.
A wireless power feeding and vibration suppressing device. The wireless power feeding and vibration suppressing device according to claim 1,
A resonance capacitor connected in series or in parallel with the power transmission magnetic antenna;
The transmission wave voltage changing unit changes the transmission wave voltage on the power transmission magnetic antenna by changing the capacitance of the resonance capacitor.
A wireless power feeding and vibration suppressing device. The wireless power feeding and vibration suppressing device according to claim 1,
In the power transmission unit,
The control unit calculates the voltage to be transmitted so as to have both positive and negative voltages,
A unipolar conversion unit that converts the calculation result to a unipolar only positive voltage,
In the power receiving unit,
The detection rectification output generated by the detection rectification unit has only one polarity of positive voltage,
A bipolar conversion unit that converts the detection rectification output into positive and negative voltage bipolar,
The vibration suppression unit performs a vibration suppression operation using an output of positive and negative voltages converted by the bipolar conversion unit,
A wireless power feeding and vibration suppressing device. The wireless power feeding and vibration suppressing device according to claim 1,
In the power transmission unit,
The control unit calculates the voltage to be transmitted so as to have both positive and negative voltages,
A unipolar conversion unit that converts the calculation result to a unipolar only positive voltage,
In the power receiving unit,
The detection rectification output generated by the detection rectification unit has only one polarity of positive voltage,
A bipolar conversion unit that converts the detection rectification output into positive and negative voltage bipolar,
The bipolar converter is
A positive voltage generator for generating a positive voltage of a predetermined voltage from the detection rectification output;
A negative voltage generation unit that generates a predetermined negative voltage from the detection rectification output;
A subtracting unit that subtracts the generated voltage of the negative voltage generating unit at a predetermined ratio using the detection rectified output by using the generated voltage of the positive voltage generating unit and the generated voltage of the negative voltage generating unit as power sources. And
The vibration suppression unit performs a vibration suppression operation using an output of positive and negative voltages converted by the bipolar conversion unit,
A wireless power feeding and vibration suppressing device. The wireless power feeding and vibration suppressing device according to claim 1,
In the power transmission unit,
The control unit calculates the voltage to be transmitted so as to have both positive and negative voltages,
A unipolar conversion unit that converts the calculation result to a unipolar only positive voltage,
In the power receiving unit,
A bipolar power receiving magnetic antenna that receives a transmission wave transmitted from the power transmission magnetic antenna and outputs a potential reference point, a voltage higher than the potential reference point, and a voltage lower than the potential reference point;
A bipolar detection and rectification unit for detecting and rectifying a received signal of the bipolar power receiving magnetic antenna to generate a positive voltage detection rectification output having a positive voltage and a negative voltage detection rectification output having a negative voltage;
A bipolar conversion unit that converts the positive voltage detection rectification output into a positive and negative voltage and a bipolar polarity; and
The vibration suppression unit performs a vibration suppression operation using an output of positive and negative voltages converted by the bipolar conversion unit,
A wireless power feeding and vibration suppressing device. The wireless power feeding and vibration suppressing device according to claim 1,
In the power transmission unit,
The control unit calculates the voltage to be transmitted so as to have both positive and negative voltages,
A unipolar conversion unit that converts the calculation result to a unipolar only positive voltage,
In the power receiving unit,
A bipolar power receiving magnetic antenna that receives a transmission wave transmitted from the power transmission magnetic antenna and outputs a potential reference point, a voltage higher than the potential reference point, and a voltage lower than the potential reference point;
A bipolar detection and rectification unit for detecting and rectifying a received signal of the bipolar power receiving magnetic antenna to generate a positive voltage detection rectification output having a positive voltage and a negative voltage detection rectification output having a negative voltage;
A bipolar conversion unit that converts the positive voltage detection rectification output into a positive and negative voltage and a bipolar polarity; and
The vibration suppression unit performs vibration suppression operation using the output of positive and negative voltages converted by the bipolar conversion unit,
The bipolar converter is
A positive voltage generation unit that generates a positive voltage of a predetermined voltage from the positive voltage detection rectification output;
A smoothing unit that smoothes the negative voltage detection rectification output and generates a negative voltage of a predetermined voltage;
A subtracting unit that subtracts the generated voltage of the smoothing unit from the positive voltage detection rectified output at a predetermined ratio using the generated voltage of the positive voltage generating unit and the generated voltage of the smoothing unit as a power source,
A wireless power feeding and vibration suppressing device. The wireless power feeding and vibration suppressing device according to claim 1,
The vibration control unit
A mass member having a mass for damping; and
An operation unit that generates an operation amount corresponding to the voltage of the output generated by the detection rectification unit with respect to the mass member, and
The center of gravity center line of the mass member is set off by a predetermined amount from the center of gravity center line of the vibration control object,
The output generated by the detection rectification unit input to the operating unit is only a positive voltage,
A wireless power feeding and vibration suppressing device. The wireless power feeding and vibration suppressing device according to any one of claims 1 to 10,
The vibration suppression object and the power receiving unit are provided to rotate integrally.
A wireless power feeding and vibration suppressing device. The wireless power feeding and vibration suppressing device according to claim 11,
The vibration detection frequency of the sensor is at least twice the rotational frequency of the vibration control object.
A wireless power feeding and vibration suppressing device. The wireless power feeding and vibration suppressing device according to claim 11,
The vibration suppression object has a plurality of contact portions that cause vibration by contacting an external object during rotation,
The vibration detection frequency of the sensor is at least twice the value obtained by multiplying the rotational frequency of the vibration control object by the number of the contact portions.
A wireless power feeding and vibration suppressing device.

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