JPH09317653A - Oscillatory type compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve compression efficiently by operating a piston constantly at resonance frequency not only by carrying out feed-back control based on the deviation from an expected value of a top dead center of the piston but also by periodically detecting the resonance frequency on an oscillatory type compressor used for various electrical equipment. SOLUTION: A voltage value of alternating current voltage from a driving part 103 to apply to a piston 102 is increased and decreased based on the top dead center positional deviation detected by a top dead center positional deviation detection part 108, and a frequency value of alternating current voltage from the driving part 103 to apply to the piston 102 is increased and decreased in accordance with frequency deviation detected by a frequency deviation detection part 111 for each constant time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a vibration type compressor such as a refrigerator.

[0002]

2. Description of the Related Art Vibration compressors are used in refrigerators and the like because of their simple structure, small size and light weight, high power factor, and low power consumption.

An example of a conventional vibration type compressor is disclosed in Japanese Utility Model Laid-Open No. 2-145678.

A conventional vibration type compressor will be described below with reference to FIG. In FIG. 7, 1 is a pressure command generator, 2 is a summing amplifier, 3 is a frequency signal generator, 4 is a pulse signal generator, 5 is a power controller, 6 is an AC power supply, 7 is a linear motor, 8 is a compressor, Reference numeral 9 is a pressure layer, 10 is a compressor, and 11 is a pressure detector.

The AC power supply 6 supplies power to the power controller 5. The power controller 5 uses the power supplied from the AC power supply 6 and the signal supplied from the pulse signal generator 4 to control the compressor. This is for driving the linear motor 7 that constitutes 10.

The operation of the conventional vibration type compressor will be described. The pressure command generator 1 gives a pressure command to the summing amplifier 2. The summing amplifier 2 generates a pressure command given from the pressure command generator 1, a pressure value detected by the pressure detector 11, and a frequency generated by the frequency signal generator 3. The signal is added and amplified, and a signal is output to the pulse signal generator 4.

[0007] The pulse signal generator 4 supplies a pulse signal to the power controller 5 based on the signal output from the addition amplifier 2.

A power controller 5 drives a linear motor 7 constituting a vibrating compressor 11 by using a power supplied by an AC power supply 6 based on a signal generated by the pulse signal generator 4.

When the linear motor 7 is driven, the compressor 8 sucks, compresses, and discharges the refrigerant in the pressure tank 9.

The pressure detector 11 detects the pressure of the refrigerant discharged from the pressure tank 9 and outputs a signal to the addition amplifier 2.

By using such a conventional vibration type compressor, even when a difference occurs between the pressure indicated by the pressure command generator 1 and the pressure of the pressure tank 9 detected by the pressure detector 11, the addition amplifier is used. 2 controls the signal output given to the pulse signal generator 4 so as to operate the vibration compressor 10 as expected.

[0012]

However, in a vibrating compressor using the prior art, it is not possible to detect a change in the resonance frequency of the vibrating compressor due to a change in a load condition or the like. There has been such a problem that a deviation from the resonance frequency occurs and the compression efficiency is reduced.

Further, due to the fact that there is an error between the true refrigerant pressure and the pressure detected by the pressure detector, and there is a time delay in the detected pressure depending on the mounting position of the pressure detector, the summing amplifier causes the pulse signal generator to operate. However, there is a problem that the control of the signal output given to the device may be uncertain or unstable.

In view of the above, the present invention considers that the resonance frequency of the vibrating compressor changes due to a change in load conditions and the like, detects the top dead center position of the piston, and determines the deviation from the expected value. The object of the present invention is to not only prevent the decrease in efficiency by feeding back to the amplitude value of the compressor, but also improve the efficiency by detecting the resonance frequency of the compressor and operating the piston at the resonance frequency.

[0015]

In order to solve this problem, the present invention provides a cylindrical cylinder provided with an intake valve and a discharge valve, a piston that moves axially in the cylinder, and the piston. A driving unit that applies an AC voltage as a piston driving force to the piston to drive the piston, a resonance spring coupled to the piston, and a displacement of the piston that is coupled in the axial direction of the piston and is output as a piston position signal. A displacement detection unit, a top dead center position detection unit that detects the top dead center position of the piston from the piston position signal detected by the displacement detection unit, and a top dead center that sets the top dead center position expected value of the piston. A position setting unit, a deviation between the top dead center position detected by the top dead center position detection unit and the expected top dead center position set by the top dead center position setting unit is detected as a top dead center position deviation. Up A point position deviation detection unit, an operating frequency detection unit that detects an operating frequency of the piston from the piston position signal detected by the displacement detection unit, and a resonance frequency that detects a resonance frequency of a system including the piston and the resonance spring. A detection unit, a frequency deviation detection unit that detects a deviation between the resonance frequency detected by the resonance frequency detection unit and the operation frequency detected by the operation frequency detection unit as a frequency deviation, and a time measurement unit that measures time, Based on the top dead center position deviation detected by the top dead center position deviation detection unit, the drive unit increases or decreases the voltage value of the piston driving force applied to the piston, and based on the time measured by the time counting unit. The resonance frequency is detected by the resonance frequency detection unit at regular time intervals, and the operation frequency is detected by the operation frequency deviation detection unit. The frequency deviation of the piston driving force applied to the piston by the drive unit is increased or decreased based on the frequency deviation detected by the output unit, and the voltage value is increased or decreased during the period in which the frequency value is increased or decreased. And a control unit for stopping the vibration.

Further, a cylindrical cylinder provided with an intake valve and a discharge valve, a piston axially moving in the cylinder, and an AC voltage as a piston driving force is applied to the piston to drive the piston. A drive unit, a resonance spring connected to the piston, a displacement detection unit connected in the axial direction of the piston to detect displacement of the piston and output as a piston position signal, and the piston position detected by the displacement detection unit. A top dead center position detector that detects the top dead center position of the piston from a signal, a top dead center position setting part that sets the top dead center position expected value of the piston, and the top dead center position detector A top dead center position deviation detection unit that detects a deviation between the top dead center position and the expected top dead center position set by the top dead center position setting unit as a top dead center position deviation, and the top dead center position deviation detection An operation frequency detection unit that detects the operation frequency of the piston from the piston position signal detected by the top dead center position deviation storage unit and the displacement detection unit that stores the top dead center position deviation that is detected by the piston and the piston. A resonance frequency detection unit that detects a resonance frequency of a system including a resonance spring, and a frequency that detects a deviation between the operation frequency detected by the operation frequency detection unit and the resonance frequency detected by the resonance frequency detection unit as a frequency deviation. Deviation detection unit, a time counting unit that measures time, a voltage value of the piston driving force applied to the piston by the drive unit based on the top dead center position deviation detected by the top dead center position deviation detection unit. The top-dead-center position deviation stored in the top-dead-center position deviation storage unit is increased or decreased, and the top-dead-center position deviation stored in the top-dead-center position deviation storage unit is set based on the time measured by the timekeeping unit. When the condition is satisfied by determining whether or not the condition is satisfied, the resonance frequency detection unit detects the resonance frequency, the operation frequency detection unit detects the operation frequency, and the frequency deviation detection unit detects the frequency deviation. And a control unit that increases or decreases the frequency value of the piston drive force applied to the piston by the drive unit based on the frequency deviation, and stops increasing or decreasing the voltage value during a period in which the frequency value is increased or decreased. It is a vibration type compressor.

Further, a cylindrical cylinder provided with an intake valve and a discharge valve, a piston that moves axially in the cylinder, and an AC voltage is applied to the piston as a piston driving force to drive the piston. A drive unit, a resonance spring connected to the piston, a displacement detection unit connected in the axial direction of the piston to detect displacement of the piston and output as a piston position signal, and the piston position detected by the displacement detection unit. A top dead center position detector that detects the top dead center position of the piston from a signal, a top dead center position setting part that sets the top dead center position expected value of the piston, and the top dead center position detector A top dead center position deviation detection unit that detects a deviation between the top dead center position and the expected value of the top dead center position set by the top dead center position setting unit as a top dead center position deviation, and the displacement detection unit detects You An operating frequency detection unit that detects an operating frequency of the piston from the piston position signal, a resonance frequency detection unit that detects a resonance frequency of a system including the piston and the resonance spring, and the operation detected by the operating frequency detection unit. A frequency deviation detection unit that detects a deviation between a resonance frequency and the resonance frequency detected by the resonance frequency detection unit as a frequency deviation, and the drive based on the top dead center position deviation detected by the top dead center position deviation detection unit. When the section increases or decreases the voltage value of the piston driving force applied to the piston, and the top dead center position deviation detected by the top dead center position deviation detection section satisfies a predetermined condition, immediately The resonance frequency detection unit detects the resonance frequency, the operation frequency detection unit detects the operation frequency, and the frequency deviation detection unit detects the frequency deviation. And a controller for increasing or decreasing the frequency value of the piston drive force applied to the piston by the drive unit based on the frequency deviation, and stopping the increase or decrease of the voltage value during the period of increasing or decreasing the frequency value. It is a vibration type compressor provided with.

[0018]

DETAILED DESCRIPTION OF THE INVENTION According to the first aspect of the present invention, there is provided a cylindrical cylinder provided with a suction valve and a discharge valve;
A piston that moves in the cylinder in the axial direction, a drive unit that applies an AC voltage to the piston as a piston driving force to drive the piston, a resonance spring connected to the piston, and an axial direction of the piston. Then, a displacement detection unit that detects the displacement of the piston and outputs it as a piston position signal, a top dead center position detection unit that detects the top dead center position of the piston from the piston position signal detected by the displacement detection unit, and Top dead center position setting unit for setting the piston top dead center position expected value, the top dead center position detected by the top dead center position detecting unit, and the top dead center position set by the top dead center position setting unit A top dead center position deviation detection unit that detects a deviation from an expected value as a top dead center position deviation, and an operation that detects the operating frequency of the piston from the piston position signal detected by the displacement detection unit A wave number detection unit, a resonance frequency detection unit that detects a resonance frequency of a system including the piston and the resonance spring, the operation frequency detected by the operation frequency detection unit, and the resonance frequency detected by the resonance frequency detection unit. Frequency deviation detection unit that detects the deviation of as a frequency deviation, a time counting unit that measures time, and the driving force is applied to the piston based on the top dead center position deviation detected by the top dead center position deviation detection unit. To increase or decrease the voltage value of the piston driving force, and to cause the resonance frequency detection unit to detect the resonance frequency at regular intervals based on the time measured by the timing unit, and cause the operation frequency detection unit to detect the operation frequency. The frequency deviation detection unit detects the frequency deviation, and based on the frequency deviation, the circumference of the piston driving force applied to the piston by the driving unit. A vibration type compressor characterized by comprising a control unit for increasing or decreasing a numerical value and stopping the increase or decrease of the voltage value while the frequency value is being increased or decreased. AC voltage is applied as a piston driving force to the piston that moves in the axial direction in the cylinder of the tubular body provided with the discharge valve, and the displacement detector detects the piston displacement and outputs it as a piston position signal. The dead center position detector detects the piston top dead center position from the piston position signal from the displacement detector, and the top dead center position setting unit sets the piston top dead center position expected value and detects the top dead center position deviation. Part detects the deviation between the top dead center position of the piston and the expected top dead center position as the top dead center position deviation, and the operating frequency detection part detects the operating frequency of the piston by the piston position signal from the displacement detection part, Resonance frequency detector Detects the resonance frequency of the system consisting of the piston and the resonance spring, the frequency deviation detection unit detects the deviation between the operating frequency of the piston and the resonance frequency as the frequency deviation, the time measurement unit measures the time, and the control unit top-dead. Based on the top dead center position deviation detected by the point position deviation detection section, the voltage value of the piston drive force applied to the piston by the drive section is increased or decreased, and the resonance frequency detection section is set at regular intervals based on the time measured by the timer section. To detect the resonance frequency, the operating frequency detection unit to detect the operating frequency, the frequency deviation detection unit to detect the frequency deviation, and based on the frequency deviation, the drive unit increases or decreases the frequency value of the piston drive force applied to the piston and drives the piston. During the period in which the force frequency value is increased / decreased, it has the effect of stopping the increase / decrease in the voltage value of the piston driving force.

According to a second aspect of the present invention, a cylindrical cylinder provided with an intake valve and a discharge valve, a piston axially moving in the cylinder, and an alternating voltage as a piston driving force are applied to the piston. A drive unit that applies and drives the piston, a resonance spring that is connected to the piston, a displacement detection unit that is connected in the axial direction of the piston, detects the displacement of the piston, and outputs the displacement as a piston position signal, and the displacement detection. A top dead center position detection unit for detecting the top dead center position of the piston from the piston position signal detected by a section, a top dead center position setting unit for setting the top dead center position expected value of the piston, and the top dead center. A top dead center position deviation detection unit that detects a deviation between the top dead center position detected by the point position detection unit and the top dead center position expected value set by the top dead center position setting unit as a top dead center position deviation; , The above An operating frequency detection unit that detects the operating frequency of the piston from the top dead center position deviation storage unit that stores the top dead center position deviation detected by the dead center position deviation detection unit and the piston position signal detected by the displacement detection unit And a resonance frequency detection unit that detects a resonance frequency of a system including the piston and the resonance spring, and a deviation between the resonance frequency detected by the resonance frequency detection unit and the resonance frequency detected by the operation frequency detection unit. A frequency deviation detection unit that detects the frequency deviation, a time measurement unit that measures time,
Based on the top dead center position deviation detected by the top dead center position deviation detection unit, the drive unit increases or decreases the voltage value of the piston driving force applied to the piston, and based on the time measured by the time counting unit. When the top dead center position deviation stored in the top dead center position deviation storage unit at regular time intervals is determined to satisfy a predetermined condition and the condition is satisfied, the resonance frequency detection unit performs the resonance. The frequency of the piston drive force applied to the piston by the drive unit based on the frequency deviation by detecting the frequency and detecting the operation frequency by the operation frequency detection unit and detecting the frequency deviation by the frequency deviation detection unit A vibration type compressor characterized by comprising: a controller for increasing and decreasing the value and stopping the increase and decrease of the voltage value during the period of increasing and decreasing the frequency value. An AC voltage is applied as a piston driving force to a piston that moves in the axial direction in a cylinder of a tubular body provided with an intake valve and a discharge valve, and the displacement detector detects the piston displacement and outputs it as a piston position signal. The top dead center position detector detects the piston top dead center position from the piston position signal from the displacement detector, and the top dead center position setting part sets the piston top dead center position expected value, and the top dead center position The deviation detection unit detects the deviation between the top dead center position of the piston and the expected value of the top dead center position as the top dead center position deviation, and the top dead center position deviation storage unit detects the top dead center position deviation detection unit. The point position deviation is stored, the operating frequency detection unit detects the operating frequency of the piston by the piston position signal from the displacement detection unit, the resonance frequency detection unit detects the resonance frequency of the system consisting of the piston and the resonance spring, and the frequency deviation The output part detects the deviation between the piston operating frequency and the resonance frequency as the frequency deviation, the time measuring part measures the time, and the control part drives based on the top dead center position deviation detected by the top dead center position deviation detection part. Section increases or decreases the voltage value of the piston drive force applied to the piston, and the top dead center position deviation stored in the top dead center position deviation storage section is preset based on the time measured by the timer section. If the condition is satisfied, the resonance frequency detection unit detects the resonance frequency, the operation frequency detection unit detects the operation frequency, the frequency deviation detection unit detects the frequency deviation, and the frequency deviation is detected based on the frequency deviation. The action of increasing or decreasing the frequency value of the piston drive force applied to the piston by the drive unit and stopping increasing or decreasing the voltage value of the piston drive force during the period in which the frequency value of the piston drive force is increased or decreased. It has.

According to a third aspect of the present invention, a cylindrical cylinder provided with an intake valve and a discharge valve, a piston axially moving in the cylinder, and an alternating voltage as a piston driving force are applied to the piston. A drive unit that applies and drives the piston, a resonance spring that is connected to the piston, a displacement detection unit that is connected in the axial direction of the piston, detects a displacement of the piston, and outputs a piston position signal, and the displacement detection A top dead center position detection unit for detecting the top dead center position of the piston from the piston position signal detected by a section, a top dead center position setting unit for setting the top dead center position expected value of the piston, and the top dead center. A top dead center position deviation detection unit that detects a deviation between the top dead center position detected by the point position detection unit and the top dead center position expected value set by the top dead center position setting unit as a top dead center position deviation; , The above Position detection unit detects an operating frequency of the piston from the piston position signal detected by the position detection unit, a resonance frequency detection unit for detecting the resonance frequency of the system consisting of the piston and the resonance spring, the operation frequency detection A frequency deviation detection unit that detects a deviation between the operating frequency detected by the unit and the resonance frequency detected by the resonance frequency detection unit as a frequency deviation, and the top dead center position detected by the top dead center position deviation detection unit. The drive unit increases or decreases the voltage value of the piston drive force applied to the piston based on the deviation, and the top dead center position deviation detected by the top dead center position deviation detection unit satisfies a predetermined condition. In the case of the frequency deviation detection, the resonance frequency detection unit immediately detects the resonance frequency and the operation frequency detection unit detects the operation frequency. Part to detect the frequency deviation and increase or decrease the frequency value of the piston driving force applied to the piston by the drive part based on the frequency deviation, and increase or decrease the voltage value during a period in which the frequency value is increased or decreased. And a control unit for stopping the vibration type compressor, wherein the drive unit is a piston that moves in the axial direction in a cylinder of a cylindrical body provided with an intake valve and a discharge valve. AC voltage is applied as piston driving force,
The displacement detector detects the piston displacement and outputs it as a piston position signal, and the top dead center position detector detects the top dead center position of the piston from the piston position signal from the displacement detector, and the top dead center position setting unit. Sets the piston top dead center position expected value, and the top dead center position deviation detection unit detects the deviation between the piston top dead center position and the top dead center position expected value as top dead center position deviation and detects the operating frequency. Section detects the piston operating frequency from the piston position signal from the displacement detecting section, the resonance frequency detecting section detects the resonance frequency of the system consisting of the piston and the resonance spring, and the frequency deviation detecting section detects the piston operating frequency and resonance frequency. Is detected as a frequency deviation, and the control unit increases the voltage value of the piston drive force applied to the piston by the drive unit based on the top dead center position deviation detected by the top dead center position deviation detection unit. If the top dead center position deviation detected by the top dead center position deviation detection unit satisfies a predetermined condition, and if the condition is satisfied, the resonance frequency detection unit immediately detects the resonance frequency. The operating frequency detector detects the operating frequency, the frequency deviation detector detects the frequency deviation, and the drive unit applies the piston drive force to the piston based on the frequency deviation. During the period in which it is operating, it has the effect of stopping the increase or decrease in the voltage value of the piston driving force.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
From now on, description will be made with reference to FIG. (Embodiment 1) FIG. 1 is a configuration diagram of a vibration type compressor according to a first embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the vibration type compressor according to the embodiment.

In FIG. 1, 100 (a) is an intake valve, and 100
(B) is a discharge valve, 101 is a cylinder, 102 is a piston, 103 is a drive unit, 104 is a resonance spring, 105
Is a displacement detector, 106 is a top dead center position detector, 107
The top dead center position setting unit 108 is a top dead center position deviation detection unit, 109 is an operating frequency detection unit, 110 is a resonance frequency detection unit, 111 is a frequency deviation detection unit, 112 is a clock unit, and 113 Is a control unit. In the figure, the piston 102 moves vertically inside the cylinder 101 by the driving force from the driving unit 103.

The displacement detector 104 is composed of a differential transformer and the like and is connected in the longitudinal direction of the piston 102, and detects the displacement of the piston 102 as a piston position signal such as an output voltage value of the differential transformer.

The top dead center position detection unit 106 is a displacement detection unit 10.
From the detected position signal of the piston 102, the point closest to the valve attached to the cylinder 101 when the piston 102 reciprocates is detected as the top dead center position. This operation is performed, for example, when the piston 102
The piston 10 is moved from the closest position to the valve attached to the first position until it moves further away and then to the closest position, or from the farthest position to the next position and then to the farthest position.
It is assumed that the top dead center position is detected for each cycle of the two reciprocating motions. Here, the top dead center position detected by the top dead center position detection unit 106 may be expressed as, for example, 600 μm in distance from a valve attached to the cylinder 101,
The distance from the amplitude center of the reciprocating piston 102 may be expressed as 7.50 mm.

The top dead center position setting unit 107 includes a piston 102.
For setting the expected value of the top dead center position, for example, you can manually enter the expected value with a rotary switch or keyboard, or set the expected value based on a signal from an external system. May be In this case, the expected value uses the same expression method as the top dead center position detected by the above-mentioned top dead center position detection unit 106.

The top dead center position deviation detection unit 108 detects the top dead center position of the piston 102 detected by the top dead center position detection unit 106 and the expected value of the top dead center position of the piston 102 set by the top dead center position setting unit 107. And the deviation is taken as the top dead center position deviation, for example +50 μm based on the expected value.
And so on. This operation is performed by the top dead center position detection unit 1
It is assumed that 06 is performed each time the top dead center position of the piston 102 is detected.

The operating frequency detector 109 is the displacement detector 10
The operation frequency at which the piston 102 reciprocates is detected from the detected position signal of the piston 102 at 4.
This operation is performed, for example, when the piston 102 is the cylinder 101.
The operating frequency is detected by, for example, measuring the time from the time when the valve is closest to the valve attached to, to the time when the valve is closest to the valve, or the time when the valve is the farthest from the valve to the valve that is closest to the valve.

The resonance frequency detecting section 110 includes the piston 102.
And a resonance frequency of the system including the resonance spring 104 is detected. This means that if the voltage value applied from the drive unit 103 is the same, the current value applied from the drive unit 103 becomes minimum when the piston 102 reciprocates at the resonance frequency. If the applied voltage value is the same, the amplitude value of the piston 102 is maximized when the piston 102 reciprocates at the resonance frequency. Therefore, when the resonance frequency detection unit 110 detects the resonance frequency, , The voltage value of the voltage applied by the drive unit 103 to the piston 102 is once fixed, and the drive unit 103 is controlled within a predetermined range.
Changes the frequency of the voltage applied to the piston 102 and measures the change in the current value or the amplitude value at that time. The frequency value when the current value is minimum or the frequency value when the amplitude value is maximum is determined by the piston 102. And the resonance frequency of the system including the resonance spring 104.

The frequency deviation detecting section 111 detects a deviation between the operating frequency of the piston 102 detected by the operating frequency detecting section 109 and the resonance frequency of the system composed of the piston 102 and the resonance spring 104 detected by the resonance frequency detecting section 110. .

The timer 112 measures time. Control unit 1
13 indicates, for example, if the top dead center deviation detected by the top dead center deviation detection section 103 is +50 μm, the drive section 103 causes the piston 10 to move.
2 such as decreasing the voltage value applied to 2 by 0.1V,
Based on the top dead center deviation detected by the top dead center position deviation detection unit 108, the drive unit 103 increases or decreases the voltage value applied to the piston 102, and based on the time clocked by the clock unit 112, for example, every 5 minutes. As described above, the operating frequency detecting unit 109 detects the operating frequency of the piston 102, the resonant frequency detecting unit 110 detects the resonant frequency of the system including the piston 102 and the resonant spring 104, and the frequency deviation detecting unit 111. To detect the frequency deviation between the operating frequency and the resonance frequency, and based on the frequency deviation detected by the frequency deviation detecting section 111, the driving section 103 causes the piston 102 to
The frequency value of the voltage applied to the piston 102 is increased / decreased, and the increase / decrease of the voltage value of the voltage applied to the piston 102 by the drive unit 103 is stopped while the frequency value of the voltage applied to the piston 102 by the drive unit 103 is increased / decreased. Here, the top dead center deviation "+50
The voltage value decreases by 0.1 V with respect to μm. "
The gain of the voltage value with respect to the deviation may be predetermined, or may be dynamically obtained by a signal from an external system or the like.

A specific example of the operation of the vibration type compressor according to the first embodiment of the present invention configured as described above is shown in FIG.
This will be described with reference to the flowchart of.

Step 1001: The driving unit 103 drives the piston 102 with a predetermined piston driving force (100 in FIG. 2).
1 copy).

Step 1002: The displacement detector 105 detects the displacement of the piston 102 and outputs it as a piston position signal (port 1002 in FIG. 2).

Step 1003: The top dead center position detector 106 detects the top dead center position of the piston 102 based on the piston position signal output by the displacement detector 105 in step 1002 (1003 part in FIG. 2).

Step 1004: Top dead center position deviation detection unit 10
8 is a deviation between the expected value of the top dead center position set by the top dead center position setting unit 107 and the top dead center position of the piston 102 detected by the top dead center position detecting unit 106 in step 1003 as the top dead center position deviation. It is detected (1004 part in FIG. 2).

Step 1005: The control unit 113 executes the step 10
In 04, the drive unit 103 increases or decreases the voltage value of the piston drive force for driving the piston 102 based on the top dead center deviation detected by the top dead center position deviation detection unit 108 (1005 in FIG. 2).
Part).

Step 1006: The control unit 113 causes the clock unit 1 to
Based on the time counted in 12, it is determined whether or not a predetermined time has elapsed, and if the predetermined time has not elapsed, steps 1001 to 1005 are repeatedly executed (1006 part in FIG. 2).

Step 1007: If the time determined in step 1006 has elapsed, the displacement detector 105 detects the displacement of the piston 102 and outputs it as a piston position signal (step 1007 in FIG. 2), as in step 1002. .

Step 1008: The operating frequency detecting section 109 detects the operating frequency of the piston 102 based on the piston position signal output by the displacement detecting section 105 in step 1007 (1008 section in FIG. 2).

Step 1009: The resonance frequency detector 110 detects the resonance frequency of the system including the piston 102 and the resonance spring 104 (section 1009 in FIG. 2).

Step 1010: Frequency deviation detecting section 111
However, a deviation between the operating frequency of the piston 102 detected by the operating frequency detection unit 109 in step 1008 and the resonance frequency of the system including the piston 102 and the resonance spring 104 detected by the resonance frequency detection unit 110 in step 1009 is detected as a frequency deviation. 1010 of FIG. 2).

Step 1011: Control unit 113 executes step 101
At 0, the drive unit 103 increases or decreases the voltage value of the piston driving force for driving the piston 102 based on the frequency deviation detected by the frequency deviation detection unit 111 (1011 part in FIG. 2).

As described above, the vibration type compressor according to the first embodiment of the present invention includes the drive unit 103 for applying an AC voltage to the piston 102 as a piston driving force, and the piston 1.
02, which is connected in the axial direction of No. 02 and detects a displacement of the piston 102 and outputs it as a piston position signal.
And a top dead center position detection unit 1 that detects the top dead center position of the piston 102 from the piston position signal from the displacement detection unit 105
06, a top dead center position setting unit 107 that sets an expected value of the top dead center position, a top dead center position detected by the top dead center position detecting unit 106, and a top dead center set by the top dead center position setting unit 107. Top dead center position deviation detection unit 108 for detecting deviation from the expected position value
And an operating frequency detector 1 for detecting the operating frequency of the piston 102 from the piston position signal from the displacement detector 105.
09, a resonance frequency detection unit 110 that detects the resonance frequency of the system including the piston 102 and the resonance spring 104,
A frequency deviation detection unit 111 that detects a deviation between the operation frequency detected by the operation frequency detection unit 109 and the resonance frequency detected by the resonance frequency detection unit 110 as a frequency deviation, a time measurement unit 112 that measures time, and a top dead center position deviation. Detector 10
Based on the top dead center position deviation detected by 8, the drive unit 103 increases or decreases the voltage value of the AC voltage applied to the piston 102, and the frequency deviation detected by the frequency deviation detection unit 111 at regular time intervals based on the time measurement of the time measurement unit 112. The drive unit 103 increases or decreases the frequency value of the AC voltage applied to the piston 102 based on the above, and the drive unit 103 changes the frequency value of the voltage applied to the piston 102 to the piston 1
Control unit 1 for stopping the increase and decrease of the voltage value of the voltage applied to 02
13, the top dead center position of the piston 102 when it reciprocates is not always kept at a desired position, but also when the external conditions such as temperature conditions and pressure conditions change, the piston 102 remains at the resonance frequency. It is a vibration type compressor capable of performing reciprocating motions and improving the compression efficiency.

(Second Embodiment) FIG. 3 is a block diagram of a vibration type compressor according to a second embodiment of the present invention. FIG.
4 is a flowchart showing the operation of the vibration type compressor according to the embodiment.

In FIG. 3, the same components as those of the vibration type compressor according to the first embodiment of the present invention are designated by the same reference numerals and detailed description thereof will be omitted.

In FIG. 3, reference numeral 214 denotes a top dead center position deviation storage unit,
The past history of the top dead center position deviation detected by the top dead center position deviation detecting unit 108 is stored. This operation is performed using, for example, a table, or ((first, +60 μ
m), (2nd, −10 μm), (3rd, +45 μm
m), ...) and the like, the top dead center position deviation detected by the top dead center position deviation detecting unit 108 is sequentially stored in a table, a list, or an array by using a list structure or an array, and the past history is stored. It should be remembered.

Reference numeral 213 is a control unit, for example, if the top dead center deviation detected by the top dead center deviation detection unit 103 is +50 μm, the voltage value applied by the drive unit 103 to the piston 102 is 0.1 V.
For example, the voltage value applied to the piston 102 by the drive unit 103 is increased or decreased based on the top dead center deviation detected by the top dead center position deviation detection unit 108 such that the time measured by the time counting unit 112 is reduced. For example, with respect to each of the past histories of the top dead center position deviation stored in the top dead center position deviation storage unit 214 at regular time intervals such as every 5 minutes, for example, the absolute top dead center position deviation is absolute. The piston 10 is set in the operating frequency detection unit 109 only when the condition is met by checking the condition such as whether the value exceeds 100 μm.
2 is detected, the resonance frequency detection unit 110 is caused to detect the resonance frequency of the system including the piston 102 and the resonance spring 104, and the frequency deviation detection unit 111 is caused to detect the frequency deviation between the operation frequency and the resonance frequency. The drive unit 1 is based on the frequency deviation detected by the detection unit 111.
03 increases or decreases the frequency value of the voltage applied to the piston 102, and the driving unit 103 increases or decreases the frequency value of the voltage applied to the piston 102 by the driving unit 103.
The increase / decrease of the voltage value of the voltage applied to 02 is stopped. Here, the control unit 213 controls the top dead center position deviation storage unit 21.
In the above example, the condition “absolute value exceeds 100 μm” was used as a condition for performing comparison with each of the past histories of the top dead center position deviation stored in 4. Instead, the determination condition may be set such as “−200 μm or less” or “+50 μm or more”.

A specific example of the operation of the vibration type compressor according to the second embodiment of the present invention configured as described above is shown in FIG.
This will be described with reference to the flowchart of.

Step 2001: The driving unit 103 drives the piston 102 with a predetermined piston driving force (200 in FIG. 4).
1 copy).

Step 2002: The displacement detecting section 105 detects the displacement of the piston 102 and outputs it as a piston position signal (2002 section).

Step 2003: The top dead center position detector 106 detects the top dead center position of the piston 102 based on the piston position signal output by the displacement detector 105 in step 2002 (2003 part in FIG. 4).

Step 2004: Top dead center position deviation detection unit 10
8 is the deviation of the expected value of the top dead center position set by the top dead center position setting unit 107 and the top dead center position of the piston 102 detected by the top dead center position detecting unit 106 in step 2003, as the top dead center position deviation. It is detected (2004 in FIG. 4).

Step 2005: Top dead center position deviation storage unit 21
4 stores the top dead center position deviation detected by the top dead center position deviation detecting section 108 (2005 section in FIG. 4).

Step 2006: The control unit 213 executes the step 20.
In 04, the drive unit 103 increases or decreases the voltage value of the piston drive force for driving the piston 102 based on the top dead center deviation detected by the top dead center position deviation detection unit 108 (2006 in FIG. 4).
Part).

Procedure 2007: The control unit 213 causes the clock unit 1
Based on the time measured in 12, it is determined whether a predetermined time has elapsed, and if the predetermined time has not elapsed, steps 2001 to 2006 are repeatedly executed (2006 in FIG. 4).

Step 2008: If the time determined in step 2007 has elapsed, the control unit 213 causes the step 200
In step 5, it is determined whether or not the top dead center position deviation stored in the top dead center position deviation storage unit 214 satisfies the predetermined determination condition. If not, the steps 2001 to 2006 are performed.
Are repeatedly executed (step 2008 in FIG. 4).

Step 2009: If the determination condition is satisfied in step 2008, the displacement detection unit 1 is operated as in step 2002.
05 detects the displacement of the piston 102 and outputs it as a piston position signal (2009 part of FIG. 4).

Step 2010: The operating frequency detector 109 detects the operating frequency of the piston 102 based on the piston position signal output by the displacement detector 105 in step 2009 (2010 in FIG. 4).

Step 2011: The resonance frequency detector 110 detects the resonance frequency of the system including the piston 102 and the resonance spring 104 (2011 in FIG. 4).

Step 2012: Frequency deviation detecting section 111
However, a deviation between the operating frequency of the piston 102 detected by the operating frequency detecting unit 109 in step 2010 and the resonance frequency of the system including the piston 102 and the resonance spring 104 detected by the resonance frequency detecting unit 110 in step 2011 is detected as a frequency deviation. (2012 part of FIG. 4).

Step 2013: Control unit 213 executes step 201
In step 2, the drive unit 103 increases or decreases the voltage value of the piston drive force that drives the piston 102 based on the frequency deviation detected by the frequency deviation detection unit 111 (2013 part).

As described above, the vibration type compressor according to the second embodiment of the present invention comprises a driving section 103 for applying an AC voltage to a piston 102 as a piston driving force, and a piston 1
02, which is connected in the axial direction of No. 02 and detects a displacement of the piston 102 and outputs it as a piston position signal.
And a top dead center position detection unit 1 that detects the top dead center position of the piston 102 from the piston position signal from the displacement detection unit 105
06, a top dead center position setting unit 107 that sets an expected value of the top dead center position, a top dead center position detected by the top dead center position detecting unit 106, and a top dead center set by the top dead center position setting unit 107. Top dead center position deviation detection unit 108 for detecting deviation from the expected position value
And a top dead center position deviation storage unit 214 that stores the top dead center position deviation detected by the top dead center position deviation detection unit 108, and the piston 102 based on the piston position signal from the displacement detection unit 105.
Operating frequency detecting section 109 for detecting the operating frequency of the engine, a resonant frequency detecting section 110 for detecting the resonant frequency of the system including the piston 102 and the resonant spring 104, an operating frequency for detecting the operating frequency and the resonant frequency detecting section. A frequency deviation detection unit 111 that detects a deviation from the resonance frequency detected by 110 as a frequency deviation, a time measurement unit 112 that measures time, and a drive unit that is based on the top dead center position deviation detected by the top dead center position deviation detection unit 108. 103 is the piston 10
The voltage value of the AC voltage applied to
Top dead center position deviation storage unit 21 at regular intervals based on
4 determines whether the top dead center position deviation stored in 4 satisfies a predetermined condition, and when the condition is satisfied, the drive unit 1 based on the frequency deviation detected by the frequency deviation detecting unit 111.
03 increases / decreases the frequency value of the AC voltage applied to the piston 102, and increases or decreases the frequency value of the voltage applied to the piston 102 by the drive unit 103. Since the control unit 213 that stops the increase and decrease is provided, the top dead center position when the piston 102 reciprocates is not always maintained at a desired position, but also when external conditions such as temperature conditions and pressure conditions change. Is a vibration type compressor capable of reciprocating the piston 102 at a resonance frequency and improving compression efficiency.

(Second Embodiment) FIG. 5 is a block diagram of a vibration type compressor according to a second embodiment of the present invention. FIG.
4 is a flowchart showing the operation of the vibration type compressor according to the embodiment.

In FIG. 5, the same components as those of the vibration type compressor according to the first embodiment of the present invention and the vibration type compressor according to the second embodiment of the present invention are designated by the same reference numerals and delicate. The description is omitted.

In FIG. 5, reference numeral 313 denotes a control unit, for example, if the top dead center deviation detected by the top dead center deviation detection unit 103 is +50 μm, the drive unit 103 decreases the voltage value applied to the piston 102 by 0.1V. As described above, the voltage value applied to the piston 102 by the drive unit 103 is increased or decreased based on the top dead center deviation detected by the top dead center position deviation detection unit 108, and the top dead center deviation detection unit 108 outputs The point deviation is checked against a predetermined condition, for example, whether the absolute value exceeds 100 μm, and if the condition is satisfied, the operating frequency detection unit 109 immediately detects the operating frequency of the piston 102, and the resonance frequency is determined. The detection unit 110 is caused to detect the resonance frequency of the system including the piston 102 and the resonance spring 104, and the frequency deviation detection unit 111 is used to detect the frequency deviation between the operating frequency and the resonance frequency. Frequency deviation detection unit 1
The drive unit 103 increases or decreases the frequency value of the voltage applied to the piston 102 based on the frequency deviation detected by the drive unit 103, and the drive unit 103 increases or decreases the frequency value of the voltage applied to the piston 102 by the drive unit 103. Stops the increase and decrease of the voltage value of the voltage applied to the piston 102. Here, as a condition for the control unit 313 to collate with the top dead center position deviation detected by the top dead center position deviation detection unit 108, “absolute value exceeds 100 μm” in the above example.
However, the condition is not limited to this, and “-
The determination condition may be set such as “200 μm or less” or “+50 μm or more”.

A specific example of the operation of the vibration type compressor according to the second embodiment of the present invention configured as described above is shown in FIG.
This will be described with reference to the flowchart of.

Step 3001: The driving unit 103 drives the piston 102 with a predetermined piston driving force (300 in FIG. 6).
1 copy).

Step 3002: The displacement detector 105 detects the displacement of the piston 102 and outputs it as a piston position signal (3002 in FIG. 6).

Step 3003: The top dead center position detector 106 detects the top dead center position of the piston 102 based on the piston position signal output by the displacement detector 105 in step 3002 (3003 part in FIG. 6).

Step 3004: Top dead center position deviation detection unit 10
8 is the deviation between the expected value of the top dead center position set by the top dead center position setting unit 107 and the top dead center position of the piston 102 detected by the top dead center position detecting unit 106 in step 3003, as the top dead center position deviation. It is detected (3004 part in FIG. 6).

Step 3005: The control unit 313 executes the step 30.
It is determined by 04 whether or not the top dead center position deviation detected by the top dead center position deviation detection unit 108 satisfies the determined determination condition (3005 part in FIG. 6).

Step 3006: As a result of the judgment in step 3005, if the top dead center position deviation detected by the top dead center position deviation detecting section 108 does not satisfy the predetermined judgment condition, the top dead center position deviation detecting section 108 detects it. The drive unit 103 increases / decreases the voltage value of the piston driving force for driving the piston 102 based on the above-described top dead center position deviation, and then repeats steps 3001 to 3004 (3006 in FIG. 6).
Part).

Step 3007: If the result of the determination in step 3005 is that the top dead center position deviation detected by the top dead center position deviation detecting section 108 satisfies the predetermined judgment condition, means 3
Similar to 002, the displacement detection unit 105 detects the displacement of the piston 102 and outputs it as a piston position signal (3 in FIG. 6).
007).

Step 3008: The operating frequency detector 109 detects the operating frequency of the piston 102 based on the piston position signal output by the displacement detector 105 in step 3007 (section 3008 in FIG. 6).

Step 3009: The resonance frequency detector 110 detects the resonance frequency of the system including the piston 102 and the resonance spring 104 (section 3009 in FIG. 6).

Step 3010: Frequency deviation detector 111
However, the deviation between the operating frequency of the piston 102 detected by the operating frequency detection unit 109 in step 3008 and the resonance frequency of the system including the piston 102 and the resonance spring 104 detected by the resonance frequency detection unit 110 in step 3009 is detected as a frequency deviation. (3010 part in FIG. 6).

Step 3011: Control unit 313 executes step 301
At 0, the drive unit 103 increases or decreases the voltage value of the piston driving force for driving the piston 102 based on the frequency deviation detected by the frequency deviation detection unit 111 (3011 part in FIG. 6).

As described above, the vibrating compressor according to the third embodiment of the present invention includes a driving unit 103 for applying an AC voltage to a piston 102 as a piston driving force, a piston 1
02, which is connected in the axial direction of No. 02 and detects a displacement of the piston 102 and outputs it as a piston position signal.
And a top dead center position detection unit 1 that detects the top dead center position of the piston 102 from the piston position signal from the displacement detection unit 105
06, a top dead center position setting unit 107 that sets an expected value of the top dead center position, a top dead center position detected by the top dead center position detecting unit 106, and a top dead center set by the top dead center position setting unit 107. Top dead center position deviation detection unit 108 for detecting deviation from the expected position value
And an operating frequency detector 1 for detecting the operating frequency of the piston 102 from the piston position signal from the displacement detector 105.
09, a resonance frequency detection unit 110 that detects the resonance frequency of the system including the piston 102 and the resonance spring 104,
A frequency deviation detection unit 111 that detects a deviation between the operation frequency detected by the operation frequency detection unit 109 and the resonance frequency detected by the resonance frequency detection unit 110 as a frequency deviation, and a top dead center detected by the top dead center position deviation detection unit 108. It is determined whether the point position deviation satisfies a predetermined condition, and if the condition is not satisfied, the drive unit 103 causes the piston 10 to move based on the top dead center position deviation detected by the top dead center position deviation detection unit 108.
The voltage value of the AC voltage applied to 2 is increased or decreased, and if the condition is satisfied, the frequency value of the AC voltage applied to the piston 102 by the drive unit 103 is increased or decreased based on the frequency deviation detected by the frequency deviation detection unit 111. Since the driving unit 103 includes the control unit 313 that stops the increase / decrease in the voltage value of the voltage applied to the piston 102 during the period in which the frequency value of the voltage applied to the piston 102 is increased / decreased, The top dead center position when the piston 102 reciprocates is not always kept at a desired position, but also when the external conditions such as temperature conditions and pressure conditions change, the piston 10 is kept at the resonance frequency.
This is a vibration type compressor that can perform two reciprocating motions and can improve compression efficiency.

[0079]

As described above, according to the present invention, a driving unit for applying an AC voltage to the piston as a piston driving force and a displacement which is connected in the axial direction of the piston and detects the displacement of the piston and outputs it as a piston position signal. Top dead center position detection unit that detects the top dead center position of the piston from the piston position signal from the detection unit, displacement detection unit, top dead center position setting unit that sets the expected value of the top dead center position, and top dead center A top dead center position deviation detection unit that detects a deviation between the top dead center position detected by the point position detection unit and the expected value of the top dead center position set by the top dead center position setting unit,
An operating frequency detector that detects the piston's motion frequency from the piston position signal from the displacement detector, a resonant frequency detector that detects the resonant frequency of the system consisting of vistones and resonant springs, and an operating frequency that the operating frequency detector detects. And the resonance frequency detected by the resonance frequency detection section are detected as a frequency deviation, a frequency deviation detection section, a timekeeping section for timing, and a top dead center position deviation detected by the top dead center position deviation detection section. Section increases / decreases the voltage value of the AC voltage applied to the piston, and increases / decreases the frequency value of the AC voltage applied to the piston by the drive section based on the frequency deviation detected by the frequency deviation detection section at regular intervals based on the timing of the timekeeping section. However, the control unit that stops increasing or decreasing the voltage value of the voltage applied to the piston by the driving unit while the frequency value of the voltage applied by the driving unit to the piston is increased or decreased. As a result, not only does the top dead center position of the piston when it reciprocates is always at the desired position, but the piston reciprocates at the resonance frequency even when external conditions such as temperature conditions and pressure conditions change. Can be performed, and the compression efficiency can be improved.

Further, a drive unit for applying an AC voltage to the piston as a piston driving force, a displacement detection unit connected in the axial direction of the piston for detecting the displacement of the piston and outputting it as a piston position signal, and a piston from the displacement detection unit Top dead center position detector that detects top dead center position of piston from position signal, top dead center position setting part that sets expected value of top dead center position, and top dead center detected by top dead center position detector The top dead center position deviation detection part that detects the deviation between the position and the expected value of the top dead center position set by the top dead center position setting part, and the top dead center position deviation detected by the top dead center position deviation detection part are stored. A top dead center position deviation storage unit, an operating frequency detection unit that detects the operating frequency of the piston from the piston position signal from the displacement detection unit, and a resonance frequency detection unit that detects the resonance frequency of the system composed of the piston and the resonance spring. ,luck A frequency deviation detection unit that detects the deviation between the operating frequency detected by the frequency detection unit and the resonance frequency detected by the resonance frequency detection unit as a frequency deviation, a time measurement unit that measures time, and a top dead center position deviation detection unit Based on the top dead center position deviation, the voltage value of the AC voltage applied to the piston by the drive unit is increased / decreased, and the top dead center position deviation stored in the top dead center position deviation storage unit is determined at regular time intervals based on the timing of the clock unit. If the conditions are satisfied, the drive unit increases or decreases the frequency value of the AC voltage applied to the piston based on the frequency deviation detected by the frequency deviation detection unit. Since the drive unit has a control unit that stops the increase or decrease of the voltage value of the voltage applied to the piston while the frequency value of the applied voltage is increased or decreased, Not only is the dead center position always maintained at the desired position, but the piston can reciprocate at the resonance frequency even when external conditions such as temperature and pressure conditions change, which can improve compression efficiency. Type compressor.

Further, a drive unit for applying an AC voltage to the piston as a piston driving force, a displacement detection unit connected in the axial direction of the piston for detecting the displacement of the piston and outputting it as a piston position signal, and a piston from the displacement detection unit Top dead center position detector that detects top dead center position of piston from position signal, top dead center position setting part that sets expected value of top dead center position, and top dead center detected by top dead center position detector Operation to detect the operating frequency of the piston from the top dead center position deviation detection part that detects the deviation between the position and the expected value of the top dead center position set by the top dead center position setting part, and the piston position signal from the displacement detection part The frequency detection unit, the resonance frequency detection unit that detects the resonance frequency of the system including the piston and the resonance spring, and the deviation between the operation frequency detected by the operation frequency detection unit and the resonance frequency detected by the resonance frequency detection unit. Frequency deviation detection unit that detects the frequency deviation as the frequency deviation and the top dead center position deviation detected by the top dead center position deviation detection unit determine whether the specified conditions are met. Based on the top dead center position deviation detected by the point position deviation detection unit, the drive unit increases or decreases the voltage value of the AC voltage applied to the piston, and if the conditions are satisfied, based on the frequency deviation detected by the frequency deviation detection unit. The drive unit increases or decreases the frequency value of the AC voltage applied to the piston, and stops the increase or decrease of the voltage value of the voltage applied to the piston by the drive unit while the drive unit increases or decreases the frequency value of the voltage applied to the piston. Since it is equipped with a control unit, it not only keeps the top dead center position at the desired position when the piston reciprocates, but also at the resonance frequency when the external conditions such as temperature conditions and pressure conditions change. Can be performed in reciprocating motion, a vibrating compressor it is possible to improve the compression efficiency.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a vibration type compressor according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the first embodiment of the present invention.

FIG. 3 is a configuration diagram of a vibration compressor according to a second embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the second embodiment of the present invention.

FIG. 5 is a configuration diagram of a vibration compressor according to a third embodiment of the present invention.

FIG. 6 is a flowchart showing the operation of the third embodiment of the present invention.

FIG. 7 is a block diagram of a conventional vibration type compressor.

[Explanation of symbols]

 100 (a) Suction valve 100 (b) Discharge valve 101 Cylinder 102 Piston 103 Drive part 104 Resonance spring 105 Transition detection part 106 Top dead center position detection part 107 Top dead center position setting part 108 Top dead center position deviation detection part 109 Operation Frequency detection unit 110 Resonance frequency detection unit 111 Frequency deviation detection unit 112 Clock unit 113 Control unit

Claims (3)

[Claims] 1. A cylindrical cylinder provided with an intake valve and a discharge valve, a piston that moves axially in the cylinder, and an AC voltage is applied to the piston as a piston driving force to drive the piston. A drive unit, a resonance spring connected to the piston, a displacement detection unit connected in the axial direction of the piston to detect displacement of the piston and output as a piston position signal, and the piston position detected by the displacement detection unit. A top dead center position detector that detects the top dead center position of the piston from a signal, a top dead center position setting part that sets the top dead center position expected value of the piston, and the top dead center position detector A top dead center position deviation detection unit that detects a deviation between the top dead center position and the expected value of the top dead center position set by the top dead center position setting unit as a top dead center position deviation, and the displacement detection unit detects Said An operating frequency detector that detects the operating frequency of the piston from a piston position signal, a resonant frequency detector that detects the resonant frequency of the system consisting of the piston and the resonant spring, and the operating frequency detected by the operating frequency detector. And a frequency deviation detection unit that detects a deviation between the resonance frequency detected by the resonance frequency detection unit as a frequency deviation, a time counting unit that measures time, and the top dead center detected by the top dead center position deviation detection unit. The drive unit increases or decreases the voltage value of the piston drive force applied to the piston based on the positional deviation, and the resonance frequency is detected by the resonance frequency detection unit at regular intervals based on the time measured by the timer unit. Then, the operating frequency detection unit detects the operating frequency, the frequency deviation detection unit detects the frequency deviation, and the frequency deviation is detected based on the frequency deviation. A control unit that increases or decreases the frequency value of the piston drive force applied to the piston by the drive unit, and stops the increase or decrease of the voltage value during a period in which the frequency value is increased or decreased. Vibration type compressor. 2. A cylindrical cylinder provided with an intake valve and a discharge valve, a piston axially moving in the cylinder, and an AC voltage as a piston driving force applied to the piston to drive the piston. A drive unit, a resonance spring connected to the piston, a displacement detection unit connected in the axial direction of the piston to detect displacement of the piston and output as a piston position signal, and the piston position detected by the displacement detection unit. A top dead center position detector that detects the top dead center position of the piston from a signal, a top dead center position setting part that sets the top dead center position expected value of the piston, and the top dead center position detector A top dead center position deviation detection unit that detects a deviation between the top dead center position and the expected top dead center position set by the top dead center position setting unit as a top dead center position deviation, and the top dead center position deviation The detector is A top dead center position deviation storage unit that stores the top dead center position deviation that is output, an operating frequency detection unit that detects the operating frequency of the piston from the piston position signal detected by the displacement detection unit, the piston, and the A resonance frequency detection unit that detects a resonance frequency of a system including a resonance spring, and a frequency that detects a deviation between the operation frequency detected by the operation frequency detection unit and the resonance frequency detected by the resonance frequency detection unit as a frequency deviation. Deviation detection unit, a time counting unit that measures time, a voltage value of the piston driving force applied to the piston by the drive unit based on the top dead center position deviation detected by the top dead center position deviation detection unit. A condition in which the top dead center position deviation stored in the top dead center position deviation storage unit is increased or decreased at predetermined intervals based on the time measured by the time measuring unit is set to a predetermined condition. If the condition is satisfied by determining whether or not it is performed, the resonance frequency detection unit detects the resonance frequency, the operation frequency detection unit detects the operation frequency, and the frequency deviation detection unit detects the frequency deviation. A control unit that increases or decreases the frequency value of the piston drive force applied to the piston by the drive unit based on the frequency deviation, and stops increasing or decreasing the voltage value during a period in which the frequency value is increased or decreased. A vibration type compressor characterized by being provided. 3. A cylindrical cylinder provided with an intake valve and a discharge valve, a piston axially moving in the cylinder, and an AC voltage as a piston driving force applied to the piston to drive the piston. A drive unit, a resonance spring connected to the piston, a displacement detection unit connected in the axial direction of the piston to detect displacement of the piston and output as a piston position signal, and the piston position detected by the displacement detection unit. A top dead center position detector that detects the top dead center position of the piston from a signal, a top dead center position setting part that sets the top dead center position expected value of the piston, and the top dead center position detector A top dead center position deviation detection unit that detects a deviation between the top dead center position and the expected value of the top dead center position set by the top dead center position setting unit as a top dead center position deviation, and the displacement detection unit detects Said An operating frequency detector that detects the operating frequency of the piston from a piston position signal, a resonant frequency detector that detects the resonant frequency of the system consisting of the piston and the resonant spring, and the operating frequency detected by the operating frequency detector. And a frequency deviation detection unit that detects a deviation between the resonance frequency detected by the resonance frequency detection unit as a frequency deviation, and the drive unit based on the top dead center position deviation detected by the top dead center position deviation detection unit. Increases or decreases the voltage value of the piston driving force applied to the piston, and the resonance occurs immediately when the top dead center position deviation detected by the top dead center position deviation detection unit satisfies a predetermined condition. A frequency detecting section detects the resonance frequency, the operating frequency detecting section detects the operating frequency, and the frequency deviation detecting section detects the frequency deviation. A control unit that increases or decreases the frequency value of the piston drive force applied to the piston by the drive unit based on the frequency deviation, and stops increasing or decreasing the voltage value during a period in which the frequency value is increased or decreased. A vibration type compressor characterized by being provided.