JP2008156009A - Oscillation controller and oscillation controlling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oscillation controller and an oscillation controlling method for converging the oscillation continuing for a predetermined time after stopping drive by an oscillation generating part in a short time. <P>SOLUTION: This oscillation controller 30a for controlling an oscillator 10 provided with an electromagnetic coil 15 for generating oscillation by utilizing alternate current is provided with an instruction input part 67 accepting driving instructions for starting the drive of the oscillator 10 or input of stop instructions for stopping the drive of the oscillator 10. This oscillation controller 30a is provided with a main circuit 43 for supplying the alternate current having the waveform set in advance to the electromagnetic coil 15 when the driving instructions are input from the instruction input part 67 to vibrate a bowl 11 of the oscillator 10 and supplying the alternate current having a phase different from that of the former alternate current to the electromagnetic coil 15 when the stop instructions are input from the instruction input part 67. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vibration control device and a vibration control method, and more particularly to a vibration control device and a vibration control method for controlling a vibration device including a vibration generating unit that generates vibration using an alternating current.

  FIG. 9 is a schematic configuration diagram of a vibration device 100 and a vibration control device 300 which are conventionally known. The vibration device 100 includes a bowl 110, a base block 120, a leaf spring 130, an electromagnet 140, and an electromagnetic coil 150. The vibration device 100 is a device that conveys the IC chip to a predetermined position. By flowing an alternating current supplied from the vibration control device 300 to the electromagnetic coil 150, the bowl 110 on which the IC chip is loaded is vibrated. Then, the IC chip is conveyed to a predetermined position.

  The vibration control device 300 receives supply of alternating current from the alternating current power supply 200, converts the frequency of the alternating current, and outputs the alternating current to the vibration device 100. Whether or not an alternating current is supplied from the vibration control device 300 to the vibration device 100 depends on whether a manager of the vibration control device 300 inputs a drive instruction to drive the vibration device 100 or stops the vibration device 100. It is controlled according to whether or not is input.

  However, the conventionally known vibration device 100 has a problem that the vibration of the bowl 110 fixed by the leaf spring 130 continues for a long time after the drive of the vibration device 100 is stopped. As described above, when the vibration of the bowl 110 continues even after the driving of the vibration device 100 is stopped, there is a problem that the IC chip on the bowl 110 cannot be accurately conveyed to a predetermined position.

FIG. 10 is a diagram for explaining a case where the vibration device 100 is controlled by a conventionally known vibration control device 300.
FIG. 10A is a diagram showing a change in amplitude over time in the bowl 110 of the vibration device 100 with time (seconds) on the horizontal axis and the magnitude of vibration on the vertical axis. FIG. 10B shows the current supplied from the vibration control device 300 to the electromagnetic coil 150 of the vibration device 100. The horizontal axis represents time (seconds), and the vertical axis represents the current value of the current flowing through the electromagnetic coil 150. FIG.
FIG. 10C is an enlarged view of the time zone _X01 region of FIG. 10A in the time axis direction. FIG. 10D is an enlarged view of the time zone _X01 region of FIG. 10B in the time axis direction.

In FIG. 10 (a), FIG. 10 (b), the from time _{t 00} to time _{t 01,} the drive instruction to the vibration control unit 300 is input, the alternating current of amplitude _{A 01} outputted by the vibration control unit 300 The bowl 110 vibrates with an amplitude B ₀₁ by the magnetic flux generated by the electromagnetic coil 150 of the vibration device 100.
The time t ₀₁ after, is input stop instruction to the vibration control unit 300, the vibration control unit 300 as shown in FIG. 10 (b) to stop the supply of AC current to the vibration device 100. As shown in FIG. 10A, after the stop instruction is input to the vibration control device 300 (time t ₀₁ ), the time of about 3 seconds is required until the amplitude of the bowl 110 is sufficiently attenuated (time t ₀₂ ). Is needed.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vibration control device and a vibration control method capable of converging, in a short time, vibration that continues for a predetermined time after driving by the vibration generating unit is stopped. Is to provide.

The present invention has been made to solve the above problems, and the invention according to claim 1 is a vibration control device that controls a vibration device including a vibration generating unit that generates vibration using an alternating current. An instruction input unit that receives an input of a drive instruction to start driving of the vibration device or a stop instruction to stop driving of the vibration device, and is set in advance when the drive instruction is input from the instruction input unit A first current supply unit that vibrates the vibration device by supplying an alternating current having a waveform to the vibration generation unit, and the alternating current is in phase when the stop instruction is input from the instruction input unit. And a second current supply unit that supplies different currents to the vibration device.
In the present invention, when a drive instruction is input from the instruction input unit, the first current supply unit supplies an alternating current having a preset waveform to the vibration generating unit, and a stop instruction is input from the instruction input unit In addition, the second current supply unit supplies a current having a phase different from that of the alternating current to the vibration device.
Therefore, the vibration generated when the first current supply unit supplies the alternating current to the vibration generation unit of the vibration device is attenuated by the force generated by the vibration generation unit by the current supplied by the second current supply unit. Therefore, the vibration that continues for a predetermined time after the drive by the vibration generating unit is stopped can be converged in a short time.

The second current supply unit of the invention described in claim 2 supplies a direct current to the vibration device as a current having a phase different from that of the alternating current. It is a vibration control device.
In the present invention, the vibration generated by the first current supply unit supplying an alternating current to the vibration generating unit of the vibration device is a force generated by the vibration generating unit by the direct current supplied by the second current supply unit. Therefore, the vibration that continues for a predetermined time after the drive by the vibration generating unit is stopped can be converged in a short time.

Further, the second current supply unit of the invention described in claim 3 is configured to supply a current having a phase and amplitude different from that of the alternating current to the vibration device as a current having a phase different from that of the alternating current. The vibration control device according to claim 1.
In the present invention, the vibration generated by the first current supply unit supplying an alternating current to the vibration generating unit of the vibration device is different in phase and amplitude from the alternating current supplied by the second current supply unit. Since the current can be attenuated by the force generated by the vibration generating unit, the vibration that continues for a predetermined time after the driving by the vibration generating unit is stopped can be converged in a short time.

Further, the second current supply unit of the invention described in claim 4 intermittently supplies a current having a phase different from that of the alternating current to the vibration device. This is a vibration control device.
In the present invention, the vibration generated by the first current supply unit supplying the alternating current to the vibration generating unit of the vibration device is in phase with the alternating current supplied intermittently by the second current supply unit. Since it can be attenuated by the force generated by the vibration generating unit with a different current, the vibration that continues for a predetermined time after the driving by the vibration generating unit is stopped can be converged in a short time.
Further, since the second current supply unit intermittently supplies a current having a phase different from that of the alternating current to the vibration device, the power consumption is reduced as compared with the case where the current is continuously supplied to the vibration device. can do.

The invention according to claim 5 further includes a time measuring unit that measures whether or not a preset time has elapsed from the time when the drive instruction is input from the instruction input unit, and the second current The supply unit stops supply of a current having a phase different from that of the alternating current to the vibration device when the preset time has elapsed. It is a vibration control apparatus as described in above.
In the present invention, when the preset time has elapsed from the time when the drive instruction is input from the instruction input unit, the second current supply unit stops supplying the current to the vibration device. By setting an appropriate time as the set time, the current from the second current supply unit to the vibration generating unit when the amplitude is attenuated by a predetermined amount without measuring the amplitude of the vibration generated by the vibration generating unit. Can be stopped.

The invention according to claim 6 further includes a displacement detection unit that measures an amplitude of vibration generated by the vibration generation unit, and the second current supply unit has a maximum amplitude measured by the displacement detection unit. 5. The method according to claim 1, wherein when a value becomes smaller than a preset threshold value, supply of current having a phase different from that of the alternating current to the vibration device is stopped. It is a vibration control apparatus of description.
In the present invention, when the maximum value of the amplitude measured by the displacement detection unit becomes smaller than a preset threshold value, the second current supply unit supplies a current having a phase different from that of the alternating current to the vibration device. Therefore, the second current supply unit can be prevented from supplying current to the vibration generation unit after the amplitude of the vibration generated by the vibration generation unit becomes smaller than a preset threshold value. it can.

  The invention according to claim 7 is a vibration control method for controlling a vibration device including a vibration generation unit that generates vibration using an alternating current, and a drive instruction to start driving the vibration device, or An instruction input process for receiving an input of a stop instruction for stopping driving of the vibration device, and an alternating current having a preset waveform when the drive instruction is input in the instruction input process is supplied to the vibration generating unit A first current supply process for vibrating the vibration device, and a second current that supplies the vibration device with a current having a phase different from that of the alternating current when the stop instruction is input in the instruction input process. A vibration control method characterized by executing a supply process.

  In the present invention, the vibration that continues for a predetermined time after the driving by the vibration generating unit is stopped can be converged in a short time.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a vibration device 10 and a vibration control device 30a according to the first embodiment of the present invention.
The vibration device 10 includes a bowl 11, a base block 12, a leaf spring 13, an electromagnet 14, and an electromagnetic coil 15. Conveying the vibration device 10 is a vibratory parts feeder for conveying the member such as an IC chip, by vibrating the bowl 11 at a predetermined amplitude B _11, the IC chip to be mounted on the bowl 11 to a predetermined position To do.
The bowl 11 is connected by a base block 12 and a leaf spring 13 so as to be able to vibrate. On the base block 12, an electromagnet 14 around which a coil 15 is wound is connected so as to face a movable core fixed to the bottom of the bowl 11. A current output from the vibration control device 30a flows through the coil 15.

  The vibration control device 30a includes an inverter circuit 40, a rectifier 41, a capacitor 42, a main circuit 43, a driver circuit 44, a pulse width modulation circuit 50, a timer 60, a period setting device 61, a switch 62a, a switch 62b, and a sine wave generator. 63, a phase setter 64, voltage setters 65a and 65b, and an instruction input unit 67.

The inverter circuit 40 is connected to the AC power source 20 such as a commercial power source and the vibration device 10. The inverter circuit 40 receives supply of AC current from the AC power source 20, converts the frequency of the AC current, and supplies current to the vibration device 10. Is output. The inverter circuit 40 includes a rectifier 41, a capacitor 42, a driver circuit 44, and a main circuit 43.
The rectifier 41 is a diode or the like, and is connected to the AC power source 20, the capacitor 42, and the main circuit 43, and converts an AC current supplied from the AC power source 20 into a DC current.
The capacitor 42 is connected to the rectifier 41 and the main circuit 43, and smoothes the direct current output from the rectifier 41.

The driver circuit 44 is connected to the pulse width modulation circuit 50 and the main circuit 43, and controls the main circuit 43 based on a control signal output from the pulse width modulation circuit 50.
The main circuit 43 is a switch or the like, and is connected to the rectifier 41 and the vibration device 10. The main circuit 43 converts the direct current output from the rectifier 41 and smoothed by the capacitor 42 into an alternating current based on the control of the driver circuit 44, and supplies the converted alternating current to the vibration device 10.

The pulse width modulation circuit 50 is connected to the driver circuit 44 and the multiplier 66, converts the pulse width of the signal output from the multiplier 66 and outputs the converted signal to the driver circuit 44. The pulse width modulation circuit 50 includes a triangular wave oscillator 51 and a comparator 52.
The triangular wave oscillator 51 is connected to the + (plus) terminal of the comparator 52, generates a triangular wave waveform signal, and outputs the signal to the + terminal of the comparator 52.
The comparator 52 has a + terminal connected to the triangular wave oscillator 51, a − (minus) terminal connected to the multiplier 66, and an output terminal connected to the driver circuit 44. The comparator 52 compares the signal input to the + terminal and the signal input to the − terminal, and outputs a signal generated based on the magnitude relationship to the driver circuit 44.

2A and 2B are diagrams showing examples of input / output signals in the comparator 52 of the vibration control device 30a according to the first embodiment of the present invention.
FIG. 2A shows an input signal input to the comparator 52, where the horizontal axis represents time and the vertical axis represents voltage value. A graph g1 shows a signal input from the triangular wave oscillator 51 to the + terminal of the comparator 52. A graph g <b> 2 indicates a signal input from the multiplier 66 to the − terminal of the comparator 52.

FIG. 2B shows an output signal output from the comparator 52, with the horizontal axis representing time and the vertical axis representing voltage value. A graph g3 indicates a signal output from the output terminal of the comparator 52 to the driver circuit 44. Specifically, in FIG. 2A, when the signal (graph g1) output from the triangular wave oscillator 51 is larger than the signal output from the multiplier 66 (graph g2), FIG. as shown in the voltage value of the signal comparator 52 outputs becomes V _11. On the other hand, in FIG. 2A, when the signal (graph g1) output from the triangular wave oscillator 51 is smaller than the signal output from the multiplier 66 (graph g2), as shown in FIG. the voltage value of the signal comparator 52 outputs _{becomes V 12.}

Returning to FIG. 1, the timer 60 is connected to the period setting device 61, the switch 62a, and the sine wave generator 63, and measures time.
Cycle setter 61 is connected to the timer 60 stores in advance the period data T ₁₁ of the sine wave sine wave generator 63 is generated. The cycle setting unit 61 outputs the cycle data T ₁₁ to the sine wave generator 63 by referring to the timer 60.
Phase setter 64 is connected to the switch 62a, stores in advance the phase data alpha ₁₁ sine wave sine wave generator 63 is generated. Phase setter 64 via the switch 62a, and outputs the phase data alpha ₁₁ to a sine wave generator 63.

  The switch 62 a is connected to the phase setter 64, the timer 60, the sine wave generator 63, and the instruction input unit 67. When a drive signal is output from the instruction input unit 67, the switch 62a is turned off. On the other hand, when a stop signal is output from the instruction input unit 67, the switch 62a is turned on.

Sine wave generator 63, on the basis of the period data T ₁₁ which cycle setter 61 outputs, or based on the phase data alpha ₁₁ which period data T ₁₁ and the phase setter 64 to cycle setter 61 is output from output Then, a sine wave signal corresponding to the period data T ₁₁ or the phase data α ₁₁ is generated and output to the multiplier 66.

Voltage setting unit 65a is connected to the switch 62b, when the driving signal from the instruction input unit 67 is output, previously stores amplitude data A ₁₁ for the amplitude of the sine wave sine wave generator 63 to generate by which, the amplitude data _{a 11,} through the switch 62b, and outputs to the multiplier 66.

Voltage setting unit 65b is connected to the switch 62b, when the stop signal to the instruction input section 67 is input, the amplitude data A ₁₂ is data on the amplitude of the sine wave sine wave generator 63 to generate prestores, the amplitude data _{a 12,} through the switch 62b, and outputs to the multiplier 66.

  The switch 62b is connected to the voltage setting unit 65a, the voltage setting unit 65b, the multiplier 66, and the instruction input unit 67. When a drive signal is output from the instruction input unit 67, the switch 62b electrically connects the voltage setting unit 65a and the multiplier 66. On the other hand, when a stop signal is output from the instruction input unit 67, the switch 62b electrically connects the voltage setting unit 65b and the multiplier 66.

  The multiplier 66 multiplies the sine wave signal output from the sine wave generator 63 by the amplitude data output from the voltage setting unit 65 a or the voltage setting unit 65 b, and the signal of the multiplication result is output from the comparator 52. -Output to the terminal.

  The instruction input unit 67 is a drive instruction for starting the vibration of the bowl 11 of the vibration device 10 or a vibration for stopping the vibration of the bowl 11 of the vibration device 10 based on the operation of the administrator of the vibration control device 30a. Get driving instructions. The instruction input unit 67 outputs a drive signal to the switches 62a and 62b, respectively, when a drive instruction is acquired, and a stop signal when a stop instruction is acquired.

Next, the operation of the vibration control device 30a and the like according to the first embodiment of the present invention will be described.
First, when a manager or the like of the vibration control device 30a inputs a drive instruction to the instruction input unit 67, the instruction input unit 67 outputs a drive signal to the switch 62a and the switch 62b. As a result, the switch 62a is turned off. The switch 62b electrically connects the voltage setting unit 65a and the multiplier 66.
Accordingly, an alternating current having a waveform of A ₁₁ × sin (2πt / T ₁₁ ) is output from the inverter circuit 40 of the vibration control device 30 a to the electromagnetic coil 15 of the vibration device 10. As a result, the bowl 11 of the vibrating device 10 vibrates at a predetermined amplitude _{B 11.}

Thereafter, when an administrator or the like of the vibration control device 30a inputs a stop instruction to the instruction input unit 67, the instruction input unit 67 outputs a stop signal to the switch 62a and the switch 62b. As a result, the switch 62a is turned on. The switch 62b electrically connects the voltage setting unit 65b and the multiplier 66.
Accordingly, an alternating current having a waveform of A ₁₂ × sin ((2πt / T ₁₁ ) −α ₁₁ ) is output from the inverter circuit 40 of the vibration control device 30 a to the electromagnetic coil 15 of the vibration device 10. As a result, the bowl 11 of the vibrating device 10 which has been vibrated at a predetermined amplitude B _11, a force is applied to dampen the vibrations, after a predetermined time, the vibration of the bowl 11 of the vibrating device 10 converges.

FIGS. 3A to 3D are views for explaining the effects of the vibration control device 30a according to the first embodiment of the present invention.
FIG. 3A is a diagram showing a change in amplitude with time in the bowl 11 of the vibration device 10 with time (seconds) on the horizontal axis and the magnitude of vibration on the vertical axis. FIG. 3B shows the current supplied from the vibration control device 30a to the electromagnetic coil 15 of the vibration device 10, the time (seconds) on the horizontal axis, and the current value of the current flowing in the electromagnetic coil 15 on the vertical axis. FIG.
Further, FIG. 3 (c), the region of the time slot X ₁₁ in FIG. 3 (a), is an enlarged view in the time axis direction. Further, FIG. 3 (d) is an enlarged view of a region of the time slot X ₁₁ shown in FIG. 3 (b) in the time axis direction.

FIG. 3 (a), in FIG. 3 (b), the from time _{t 10} to the time _{t 11} is input drive instruction to the instruction input unit 67 of the vibration control device 30a, the electromagnetic coil 15 of the vibrating device 10 is generated bowl 11 is vibrating at an amplitude _{B 11} by magnetic flux. From time _{t 11} to time _{t 12,} the instruction input unit 67 of the vibration control device 30a are input stop instruction, the vibration control unit 30a as shown in FIG. 3 (b), the electromagnetic coil 15 of the vibrating device 10 Is changed from A ₁₁ × sin (2πt / T ₁₁ ) to A ₁₂ × sin ((2πt / T ₁₁ ) −α ₁₁ ). As shown in FIG. 3 (b), the time t ₁₁ after the magnitude of the vibration of the bowl 11 is attenuated with time.

With the vibration control device 30a according to the first embodiment of the present invention, from about 2.5 seconds to input stop instruction to the instruction input unit 67 of the vibration device 10 (time from time t ₁₁ to time t ₁₃₎ Thus, the vibration amplitude of the bowl 11 is sufficiently small. On the other hand, when the vibration of the vibration device 10 is stopped without using the vibration control device 30a, it takes about 3 seconds until the vibration amplitude of the bowl 11 becomes sufficiently small (FIG. 10A). reference).

As described above, in the vibration control device 30a according to the first embodiment of the present invention, the instruction input unit 67 receives a drive instruction to start driving the vibration device 10 or a stop instruction to stop driving the vibration device, When the instruction input unit 67 receives a drive instruction, the vibration device 10 is supplied by supplying an alternating current having a preset waveform A ₁₁ × sin (2πt / T ₁₁ ) to the electromagnetic coil 15 (vibration generating unit). Is vibrated by the main circuit 43 (first current supply unit). On the other hand, when the instruction input unit 67 receives a stop instruction, a current A ₁₂ × sin ((2πt / T ₁₁ ) −α ₁₁ having a phase and amplitude different from that of the alternating current A ₁₁ × sin (2πt / T ₁₁ ). ) Is supplied to the vibration device 10 by the main circuit 43 (second current supply unit).

Thus, the main circuit 43 is an alternating current _{A 11 × sin (2πt / T} 11) , and the vibrations generated by supplying to the electromagnetic coil 15 of the vibrating device 10, the main circuit 43 supplies the alternating currents _{A 11} × sin (2πt / T ₁₁ ) means that the current A ₁₂ × sin ((2πt / T ₁₁ ) −α ₁₁ ) having a different phase and amplitude can be attenuated by the force generated by the electromagnetic coil 15. After stopping the driving, the vibration that continues for a predetermined time can be converged in a short time.

Incidentally, the vibration of the bowl 11 of the vibrating device 10, in order to converge more quickly, the value of the amplitude data A _12, it is desirable to set larger than the value of the amplitude data A _11. For example, A ₁₂ may be set to a value more than twice A ₁₁ .
Further, the vibration of the bowl 11 of the vibrating device 10, in order to converge more quickly, the phase data alpha _11, it is desirable that a value close to π / 2 (= 90 °) .

(Second Embodiment)
FIG. 4 is a schematic configuration diagram of the vibration device 10 and the vibration control device 30b according to the second embodiment of the present invention. In the present embodiment, the same parts as those in the first embodiment (FIG. 1) are denoted by the same reference numerals, and description thereof is omitted.
The vibration control device 30b according to the present embodiment is the first embodiment in that a switch 62c is connected between the comparator 52 and the multiplier 66, and a DC wave generator 68 is connected to the switch 62c. Is different.
Moreover, the vibration control device 30b is different from the first embodiment in that the switch 62b and the voltage setting device 65b are not provided.
In the present embodiment, the period setting unit 61 stores a T ₂₁ as the period data, the voltage setter 65a stores A ₂₁ as amplitude data.

DC wave generator 68 via the switch 62c, to the positive terminal of the comparator 52, the amplitude and outputs a signal of DC wave A _22.
The switch 62c is connected to the comparator 52, the multiplier 66, and the DC wave generator 68. When a drive signal is output from the instruction input unit 67, the switch 62c electrically connects the comparator 52 and the multiplier 66. On the other hand, when a stop signal is output from the instruction input unit 67, the switch 62c electrically connects the comparator 52 and the DC wave generator 68.

Next, the operation of the vibration control device 30b according to the second embodiment of the present invention will be described.
First, when a manager or the like of the vibration control device 30b inputs a drive instruction to the instruction input unit 67, the instruction input unit 67 outputs a drive signal to the switch 62c. As a result, the comparator 52 and the multiplier 66 are electrically connected.
Thereby, an alternating current having a waveform of A ₂₁ × sin (2πt / T ₂₁ ) is output from the inverter circuit 40 of the vibration control device 30 b to the electromagnetic coil 15 of the vibration device 10. As a result, the bowl 11 of the vibrating device 10 vibrates at a predetermined amplitude _{B 21.}

Thereafter, when a manager or the like of the vibration control device 30b inputs a stop instruction to the instruction input unit 67, the instruction input unit 67 outputs a stop signal to the switch 62c. As a result, the comparator 52 and the DC wave generator 68 are electrically connected.
Thus, the inverter circuit 40 of the vibration control device 30b, to the electromagnetic coil 15 of the vibrating device 10, the amplitude is output direct current waveforms of the A _22. As a result, the bowl 11 of the vibrating device 10 which has been vibrated at a predetermined amplitude B _21, a force is applied to dampen the vibrations, after a predetermined time, the vibration of the bowl 11 of the vibrating device 10 converges.

FIGS. 5A to 5D are diagrams for explaining the effect of the vibration control device 30b according to the second embodiment of the present invention.
FIG. 5A is a diagram showing a change in amplitude with time in the bowl 11 of the vibration device 10 with time (seconds) on the horizontal axis and the magnitude of vibration on the vertical axis. 5B shows the current supplied from the vibration control device 30b to the electromagnetic coil 15 of the vibration device 10. The horizontal axis represents time (seconds), and the vertical axis represents the current value of the current flowing through the electromagnetic coil 15. FIG.
Further, FIG. 5 (c), the region of the time slot X ₂₁ in FIG. 5 (a), an enlarged view in the time axis direction. Further, FIG. 5 (d) is an enlarged view of a region of the time slot X ₂₁ shown in FIG. 5 (b) in the time axis direction.

FIG. 5 (a), the In FIG. 5 (b), from time _{t 10} to the time _{t 11} is input drive instruction to the instruction input unit 67 of the vibration control apparatus 30b, the electromagnetic coil 15 of the vibrating device 10 is generated bowl 11 is vibrating at an amplitude _{B 21} by magnetic flux. The time t ₂₁ after, the instruction input unit 67 of the vibration control device 30b are inputted stop instruction, the vibration control unit 30b as shown in FIG. 5 (b), current output to the electromagnetic coil 15 of the vibrating device 10 Is changed from an AC current of A ₂₁ × sin (2πt / T ₂₁ ) to a DC current having an amplitude of A ₂₂ . As shown in FIG. 5 (b), the time t ₂₁ after the magnitude of the vibration of the bowl 11 is attenuated with time.

In the present embodiment, when outputting the direct current to the electromagnetic coil 15 after the time t _21, the amplitude of the direct current, a within a predetermined range h (see FIG. 5 (d)), the period T ₂₂ is changed. Here, the value of T _21, and the value of T ₂₂ is set to be equal. Further, the waveform of the time t ₂₁ the previous AC current, the phase of the waveform of the DC current which varies periodically after time t _21, and the π / 2 (= 90 °) shifted as. In this way, the time t ₂₁ after a short time than passing a free direct current fluctuation amplitude to the electromagnetic coil 15, it is possible to converge the vibration of the bowl 11.

With the vibration control apparatus 30b according to a second embodiment of the present invention, from about 0.4 seconds to input stop instruction to the instruction input unit 67 of the vibration device 10 (time from time t ₂₁ to time t ₂₃₎ Thus, the vibration amplitude of the bowl 11 can be sufficiently reduced. On the other hand, if the vibration of the vibration device 10 is stopped without using the vibration control device 30b, it takes about 3 seconds until the vibration amplitude of the bowl 11 becomes sufficiently small (see FIG. 10).

As described above, in the vibration control device 30b according to the second embodiment of the present invention, the instruction input unit 67 receives a drive instruction to start driving the vibration device 10 or a stop instruction to stop driving the vibration device, When the instruction input unit 67 receives a drive instruction, the vibration device 10 is supplied by supplying an alternating current having a preset waveform A ₂₁ × sin (2πt / T ₂₁ ) to the electromagnetic coil 15 (vibration generating unit). Is vibrated by the main circuit 43 (first current supply unit). On the other hand, when the instruction input unit 67 accepts the stop instruction, supplies a direct current with an amplitude of A _22, the main circuit 43 to the vibration device 10 (second current supply portions).

Therefore, the vibration generated by the main circuit 43 supplying the alternating current A ₂₁ × sin (2πt / T ₂₁ ) to the electromagnetic coil 15 of the vibration device 10 is generated by the electromagnetic coil 15 by the direct current having the amplitude A _22. Therefore, the vibration that continues for a predetermined time after the driving by the electromagnetic coil 15 is stopped can be converged in a short time.

(Third embodiment)
FIG. 6 is a schematic configuration diagram of the vibration device 10 and the vibration control device 30c according to the third embodiment of the present invention. In the present embodiment, the same parts as those in the first embodiment (FIG. 1) are denoted by the same reference numerals, and description thereof is omitted.
In the vibration control device 30 c according to the present embodiment, a switch 62 d is connected between the driver circuit 44 and the comparator 52. When a drive signal is output from the instruction input unit 67, the switch 62d is turned on. On the other hand, when a stop signal is output from the instruction input unit 67, the switch 62d repeats on and off. In the present embodiment, when the stop signal from the instruction input unit 67 is output, the time for turning on the switch 62d is set to C _12, we have the time to turn off the switch 62d and C _11.

In the present embodiment, the period setter 61 stores T ₃₁ as period data, and the phase setter 64 stores α ₃₁ as phase data. Further, the voltage setting unit 65a stores the _{A 31} as amplitude data, the voltage setter 65b stores the _{A 32} as amplitude data.

Next, the operation of the vibration control device 30c according to the third embodiment of the present invention will be described.
First, when a manager or the like of the vibration control device 30c inputs a drive instruction to the instruction input unit 67, the instruction input unit 67 outputs a drive signal to the switches 62a, 62b, and 62d. As a result, the voltage setting unit 65a and the multiplier 66 are electrically connected, and the driver circuit 44 and the comparator 52 are electrically connected.
As a result, an alternating current having a waveform of A ₃₁ × sin (2πt / T ₃₁ ) is output from the inverter circuit 40 of the vibration control device 30 c to the electromagnetic coil 15 of the vibration device 10. As a result, the bowl 11 of the vibrating device 10 vibrates at a predetermined amplitude _{B 31.}

Thereafter, when an administrator of the vibration control device 30c inputs a stop instruction to the instruction input unit 67, the instruction input unit 67 outputs a stop signal to the switches 62a, 62b, and 62d. As a result, the voltage setting unit 65b and the multiplier 66 are electrically connected, and the phase setting unit 64 and the sine wave generator 63 are electrically connected. Further, the comparator 52 and driver circuit 44, after being separated by electrically time C _11, processing is repeated alternately to be electrically connected by the time C _12.

Thereby, a part of the alternating current having a waveform of A ₃₂ × sin ((2πt / T ₃₂ ) −α ₃₁ ) is intermittently transmitted from the inverter circuit 40 of the vibration control device 30 c to the electromagnetic coil 15 of the vibration device 10. Is output. As a result, the bowl 11 of the vibrating device 10 which has been vibrated at a predetermined amplitude B _31, a force is applied to dampen the vibrations, after a predetermined time, the vibration of the bowl 11 of the vibrating device 10 converges.

FIGS. 7A to 7D are diagrams for explaining the effect of the vibration control device 30c according to the third embodiment of the present invention.
FIG. 7A is a diagram showing a change in amplitude with time in the bowl 11 of the vibration device 10 with time (seconds) on the horizontal axis and the magnitude of vibration on the vertical axis. FIG. 7B shows the current supplied from the vibration control device 30c to the electromagnetic coil 15 of the vibration device 10, with the horizontal axis representing time (seconds) and the vertical axis representing the current value of the current flowing through the electromagnetic coil 15. FIG.
Further, FIG. 7 (c), the region of the time slot X ₃₁ of FIG. 7 (a), is an enlarged view in the time axis direction. FIG. 7D is a diagram in which the region of the time zone X ₃₁ in FIG. 7B is enlarged in the time axis direction.

FIG. 7 (a), the 7 (b), the from time _{t 30} to time _{t 31} is input drive instruction to the instruction input unit 67 of the vibration control device 30c, the electromagnetic coil 15 of the vibrating device 10 is generated bowl 11 is vibrating at an amplitude _{B 31} by magnetic flux. The time t ₃₁ after a stop instruction to the instruction input unit 67 of the vibration control device 30c is input, the vibration control unit 30c, as shown in FIG. 7 (b), current output to the electromagnetic coil 15 of the vibrating device 10 Is changed from an AC current of A ₃₁ × sin (2πt / T ₃₁ ) to A ₃₂ × sin ((2πt / T ₃₂ ) −α ₃₁ ). As shown in FIG. 7 (b), the time t ₃₁ after the magnitude of the vibration of the bowl 11 is attenuated with time.

With the third vibration control apparatus 30c according to another embodiment of the present invention, in about 1 second after entering a stop instruction to the instruction input unit 67 of the vibration device 10 (time from time t ₃₁ to time t _32), The amplitude of vibration of the bowl 11 can be made sufficiently small. On the other hand, when the vibration of the vibration device 10 is stopped without using the vibration control device 30c, it takes about 3 seconds until the vibration amplitude of the bowl 11 becomes sufficiently small (see FIG. 10).

As described above, in the vibration control device 30c according to the third embodiment of the present invention, the instruction input unit 67 receives a drive instruction to start driving the vibration device 10 or a stop instruction to stop driving the vibration device, When the instruction input unit 67 receives a drive instruction, the vibration device 10 is supplied by supplying an alternating current having a preset waveform A ₃₁ × sin (2πt / T ₃₁ ) to the electromagnetic coil 15 (vibration generating unit). Is vibrated by the main circuit 43 (first current supply unit). On the other hand, when the instruction input unit 67 receives a stop instruction, a current A ₃₂ × sin ((2πt / T ₃₂ ) −α ₃₁ ) having a phase different from that of the alternating current is intermittently supplied to the vibration device 10. .

Therefore, the vibration generated by the main circuit 43 supplying the alternating current A ₃₁ × sin (2πt / T ₃₁ ) to the electromagnetic coil 15 of the vibration device 10 is intermittently supplied with the alternating current A ₃₂ × sin ( Since it can be attenuated by the force generated by the electromagnetic coil 15 by (2πt / T ₃₂ ) −α ₃₁ ), the vibration that continues for a predetermined time after the driving by the electromagnetic coil 15 is stopped can be converged in a short time. it can.

(Fourth embodiment)
FIG. 8 is a schematic configuration diagram of the vibration device 10 and the vibration control device 30d according to the fourth embodiment of the present invention. In the present embodiment, the same parts as those of the second embodiment (FIG. 4) are denoted by the same reference numerals, and description thereof is omitted.
In the vibration control device 30 d according to the present embodiment, a switch 62 d is connected between the driver circuit 44 and the comparator 52. Since the switch 62d is the same as the switch 62d described in the third embodiment, the description thereof is omitted.

Next, the operation of the vibration control device 30d and the like according to the fourth embodiment of the present invention will be described.
First, when a manager or the like of the vibration control device 30d inputs a drive instruction to the instruction input unit 67, the instruction input unit 67 outputs a drive signal to the switches 62c and 62d. As a result, the voltage setting unit 65a and the multiplier 66 are electrically connected, and the driver circuit 44 and the comparator 52 are electrically connected.
Thereby, an alternating current having a waveform of A ₂₁ × sin (2πt / T ₂₁ ) is output from the inverter circuit 40 of the vibration control device 30 d to the electromagnetic coil 15 of the vibration device 10. As a result, the bowl 11 of the vibrating device 10 vibrates at a predetermined amplitude _{B 21.}

Thereafter, when an administrator or the like of the vibration control device 30c inputs a stop instruction to the instruction input unit 67, the instruction input unit 67 outputs a stop signal to the switches 62c and 62d. As a result, the comparator 52 and the DC wave generator 68 are electrically connected. Further, the comparator 52 and driver circuit 44, after being separated by electrically time C _11, processing is repeated alternately to be electrically connected by the time C _12.
Thus, the inverter circuit 40 of the vibration control device 30d, to the electromagnetic coil 15 of the vibrating device 10, the amplitude part of the DC current A ₂₂ is outputted intermittently. As a result, the bowl 11 of the vibrating device 10 which has been vibrated at a predetermined amplitude B _21, a force is applied to dampen the vibrations, after a predetermined time, the vibration of the bowl 11 of the vibrating device 10 converges.

As described above, in the vibration control device 30d according to the fourth embodiment of the present invention, the instruction input unit 67 receives a drive instruction to start driving the vibration device 10 or a stop instruction to stop driving the vibration device, When the instruction input unit 67 receives a drive instruction, the vibration device 10 is supplied by supplying an alternating current having a preset waveform A ₂₁ × sin (2πt / T ₂₁ ) to the electromagnetic coil 15 (vibration generating unit). Is vibrated by the main circuit 43 (first current supply unit). On the other hand, when the instruction input unit 67 accepts the stop instruction, the amplitude supplied to the intermittent vibration device 10 a direct current of A _22.
Thus, the main circuit 43 is an alternating current _{A 21 × sin (2πt / T} 21), the vibrations generated by supplying to the electromagnetic coil 15 of the vibrating device 10 intermittently DC current amplitude supplied is _{A 22} Can be attenuated by the force generated by the electromagnetic coil 15, so that the vibration that continues for a predetermined time after the drive by the electromagnetic coil 15 is stopped can be converged in a short time.

  In the first to fourth embodiments described above, the time measuring unit that measures whether or not a preset time (for example, 3 seconds) has elapsed from the time when the drive instruction is input from the instruction input unit 67. Provided in the vibration control device, the main circuit 43 may stop supplying the current output from the vibration control device to the electromagnetic coil 15 after the stop instruction is input when a preset time has elapsed. Good.

In the first to fourth embodiments described above, a displacement detection unit that measures the amplitude of vibration generated by the electromagnetic coil 15 is installed in the vicinity of the vibration device 10, and the main circuit 43 measures the displacement detection unit. When the maximum value of the amplitude is smaller than a preset threshold (for example, 0.1 mm), the supply of the current output from the vibration control device after the stop instruction is input to the electromagnetic coil 15 is stopped. It may be. As the displacement detection unit, a displacement sensor that is provided in the vicinity of the bowl 11 and measures the amplitude of vibration of the bowl 11 can be used. In addition, as a displacement detection part, you may use the apparatus which detects the phase of the bowl 11 of vibration with an acceleration sensor or a current harmonic.
In this way, the main circuit 43 stops supplying the current to the vibration device 10 when a preset time has elapsed from the time when the drive instruction is input from the instruction input unit 67. By setting an appropriate time as the time, the current supply from the main circuit 43 to the electromagnetic coil 15 can be stopped when the amplitude is attenuated by a predetermined amount without measuring the amplitude of the vibration of the bowl 11. .
In the first and third embodiments described above, the case where the phase setting unit 64 stores the phase data in advance has been described. However, the present invention is not limited to this. For example, the phase of the bowl 11 may be measured by the above-described displacement detection unit, and phase data with the earliest attenuation of vibration of the bowl 11 may be output from the displacement detection unit to the phase setter 64 and stored. .

In the first to fourth embodiments described above, the case where the electromagnetic coil 15 is used as the vibration generating portion and the vibration is generated in the bowl 11 by causing a current to flow through the electromagnetic coil 15 has been described. However, the present invention is not limited thereto. Is not to be done. Other devices such as a piezoelectric element can also be used as the vibration generating unit.
In this way, when the maximum value of the amplitude measured by the maximum amplitude measuring unit becomes smaller than a preset threshold value, the supply of the current having a phase different from that of the alternating current to the vibration device 10 is mainly performed. Since the circuit 43 is stopped, it is possible to prevent the main circuit 43 from supplying current to the electromagnetic coil 15 after the amplitude of vibration of the bowl 11 becomes smaller than a preset threshold value.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.

It is a schematic block diagram of the vibration apparatus 10 and the vibration control apparatus 30a by the 1st Embodiment of this invention. It is a figure which shows an example of the input-output signal in the comparator 52 of the vibration control apparatus 30a by the 1st Embodiment of this invention. It is a figure for demonstrating the effect of the vibration control apparatus 30a by the 1st Embodiment of this invention. It is a schematic block diagram of the vibration apparatus 10 and the vibration control apparatus 30b by the 2nd Embodiment of this invention. It is a figure for demonstrating the effect of the vibration control apparatus 30b by the 2nd Embodiment of this invention. It is a schematic block diagram of the vibration apparatus 10 and the vibration control apparatus 30c by the 3rd Embodiment of this invention. It is a figure for demonstrating the effect of the vibration control apparatus 30c by the 3rd Embodiment of this invention. It is a schematic block diagram of the vibration apparatus 10 and the vibration control apparatus 30d by the 4th Embodiment of this invention. It is a schematic block diagram of the vibration apparatus 100 and the vibration control apparatus 300 conventionally known. It is a figure for demonstrating the case where the vibration apparatus 100 is controlled by the vibration control apparatus 300 conventionally known.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Vibration apparatus, 11 ... Bowl, 12 ... Base block, 13 ... Leaf spring, 14 ... Electromagnet, 15 ... Electromagnetic coil, 30a-30d ... Vibration control apparatus, 40 ... Inverter circuit, 41 ... Rectifier, 42 ... Capacitor, 43 ... Main circuit, 44 ... Driver circuit, 50 ... Pulse width modulation circuit, 60 ... Timer, 61. ..Cycle setting device, 62a to 62d ... switch, 63 ... sine wave generator, 64 ... phase setting device, 65a, 65b ... voltage setting device, 67 ... instruction input unit

Claims (7)

A vibration control device that controls a vibration device including a vibration generating unit that generates vibration using an alternating current,
An instruction input unit that receives an input of a drive instruction to start driving the vibration device or a stop instruction to stop driving the vibration device;
A first current supply unit that vibrates the vibration device by supplying an alternating current having a preset waveform to the vibration generation unit when the drive instruction is input from the instruction input unit;
A second current supply unit that supplies a current having a phase different from that of the alternating current to the vibration device when the stop instruction is input from the instruction input unit;
A vibration control device comprising:   The vibration control device according to claim 1, wherein the second current supply unit supplies a direct current to the vibration device as a current having a phase different from that of the alternating current.   2. The vibration according to claim 1, wherein the second current supply unit supplies a current having a phase and amplitude different from that of the alternating current to the vibration device as a current having a phase different from that of the alternating current. Control device.   The vibration control device according to claim 2, wherein the second current supply unit intermittently supplies a current having a phase different from that of the alternating current to the vibration device. A timer for measuring whether a preset time has elapsed from the time when the drive instruction is input from the instruction input unit;
The said 2nd electric current supply part stops supply of the electric current in which a phase different from the said alternating current to the said vibration apparatus is passed when the said preset time passes. The vibration control device according to any one of the above items. A displacement detector for measuring the amplitude of vibration generated by the vibration generator;
The second current supply unit supplies a current having a phase different from that of the alternating current to the vibration device when the maximum value of the amplitude measured by the displacement detection unit is smaller than a preset threshold value. The vibration control device according to any one of claims 1 to 4, wherein the vibration control device is stopped. A vibration control method for controlling a vibration device including a vibration generating unit that generates vibration using an alternating current,
An instruction input process for receiving an input of a drive instruction to start driving the vibration apparatus or a stop instruction to stop driving the vibration apparatus;
A first current supply step of vibrating the vibration device by supplying an alternating current having a preset waveform to the vibration generator when the drive instruction is input in the instruction input step;
A second current supply process for supplying a current having a phase different from that of the alternating current to the vibration device when the stop instruction is input in the instruction input process;
The vibration control method characterized by performing.

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