CN113328583A - Automatic precise quantitative regulation and control device and method for electromagnetic zero position of servo valve - Google Patents
Automatic precise quantitative regulation and control device and method for electromagnetic zero position of servo valve Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0006—Disassembling, repairing or modifying dynamo-electric machines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
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- F16M11/043—Allowing translations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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Abstract
The invention relates to an automatic, accurate and quantitative regulation and control device and method for an electromagnetic zero position of a servo valve, wherein the device comprises a light beam sensor, a bracket, a control driver, a lifting control motor, a lifting adjusting mechanism and an inclination adjusting mechanism; the support is of a four-leg structure, and the four inclination angle adjusting mechanisms are respectively arranged below the four legs of the support; the control driver, the lifting control motor and the lifting adjusting mechanism are arranged on the bracket, the light beam sensor is arranged on the lifting adjusting mechanism, and the connecting line of two adjacent supporting legs is parallel to or vertical to the light beam direction of the light beam sensor; the lifting control motor is used for driving the lifting adjusting mechanism to drive the light beam sensor to reach a preset longitudinal position under the control of the control driver, and the four inclination angle adjusting mechanisms adjust the horizontal position of the light beam sensor by adjusting the heights of the four supporting legs under the control of the control driver, so that the light beam of the light beam sensor and the working air gap of the torque motor in the tested servo valve are in a relatively horizontal state.
Description
Technical Field
The invention relates to a servo valve electromagnetic zero position regulation and control technology, in particular to an automatic accurate quantitative regulation and control device and method suitable for multiple specifications of servo valve electromagnetic zero positions.
Background
The electro-hydraulic servo system has extremely wide application in the fields of aviation, aerospace, ships, metallurgy, chemical engineering and the like, and the electro-hydraulic servo valve is used as a core element in the electro-hydraulic servo system, can perform rapid flow regulation and plays a vital role in the system. At present, no auxiliary device is available for adjusting the electromagnetic zero position of a torque motor in the performance debugging process of an electro-hydraulic servo valve, manual judgment, trial and error and adjustment are mainly relied on, and the work of an operator has high repeatability, so that the debugging efficiency of the servo valve is limited.
When the torque motor of the servo valve is in the electromagnetic zero position, the sizes of the upper air gap and the lower air gap are consistent, so that the accurate measurement of the air gaps is a key step for regulating and controlling the electromagnetic zero position. At present, air gap testing is mainly divided into optical measurement and capacitance inductance probe type measurement, and because the armature iron and the magnetic conductor of the torque motor generate relative motion, the air gap of the torque motor can be measured only in an optical testing mode. In the article entitled "non-contact measurement and monitoring of motor air gap" (page 62 for motor and control application), by lebeda and h.lippunor, an optical motor test structure is mentioned, but in the structure, a laser is mounted on a bracket fixed on a machine base, a measured object needs to be placed in the device independently, only passive measurement can be achieved, and when the electromagnetic zero position of a servo valve is regulated, the servo valve needs to be mounted on a debugging test stand and is in an oil-through state, so the structure cannot realize accurate regulation of the electromagnetic zero position of the servo valve. In addition, the accurate testing of the air gap of the torque motor (the working air gap is only 0.03mm) plays a crucial role in the accurate quantitative regulation and control of the electromagnetic zero position of the servo valve, and the accurate testing of the torque motor is to be realized, which is crucial to ensure that the positions of the measuring light beam and the tested torque motor are in a relatively horizontal state.
Disclosure of Invention
The technical problem solved by the invention is as follows: the device and the method are suitable for automatic, accurate and quantitative regulation and control of the electromagnetic zero position of the servo valve with multiple specifications.
The invention further solves the technical problems that: in order to improve the precision of electromagnetic zero position regulation, how to ensure that the positions of the measuring light beam and the tested torque motor are in a relative horizontal state.
The invention further solves the technical problem of how to realize accurate regulation and control of the electromagnetic zero position when the servo valve is arranged on a debugging test bed and is in an oil passing state.
The technical scheme of the invention is as follows: a servo valve electromagnetic zero position automatic accurate quantification regulation and control device comprises a light beam sensor, a support, a control driver, a lifting control motor, a lifting adjusting mechanism and an inclination adjusting mechanism;
the support is of a four-leg structure, and the four inclination angle adjusting mechanisms are respectively arranged below the four legs of the support; the control driver, the lifting control motor and the lifting adjusting mechanism are arranged on the bracket, the light beam sensor is arranged on the lifting adjusting mechanism, and the connecting line of two adjacent supporting legs is parallel to or vertical to the light beam direction of the light beam sensor; the lifting control motor is used for driving the lifting adjusting mechanism to drive the light beam sensor to reach a preset longitudinal position under the control of the control driver, and the four inclination angle adjusting mechanisms adjust the horizontal position of the light beam sensor by adjusting the heights of the four supporting legs under the control of the control driver, so that the light beam of the light beam sensor and the working air gap of the torque motor in the tested servo valve are in a relatively horizontal state.
Further, the four tilt angle adjusting mechanisms adjust the horizontal position of the light beam sensor in the following way:
dividing two inclination angle adjusting mechanisms on two adjacent supporting legs of a light beam of a vertical light beam sensor into a group to obtain two groups of inclination angle adjusting mechanisms;
the two groups of inclination angle adjusting mechanisms work for one period simultaneously and reversely, and the working air gap of the torque motor is measured by the light beam sensor in the working process and is sent to the control driver; the reverse operation is that the heights of the supporting legs are changed, namely, the supporting legs are increased, and the supporting legs are decreased;
controlling the driver to determine the maximum value of the working air gap in one period according to the received working air gap;
and the two groups of inclination angle adjusting mechanisms continue to work reversely, and when the control driver judges that the received working air gap reaches the maximum value, the control driver sends an instruction to control the two groups of inclination angle adjusting mechanisms to stop working.
Furthermore, after the horizontal position of the light beam sensor is adjusted, the upper working air gap and the lower working air gap of the torque motor are synchronously tested through the synchronous test of the two channels of the light beam sensor, the control driver determines an air gap regulation value according to the measured upper working air gap and the lower working air gap, and then the corresponding air gap regulation gasket is selected to realize the quantitative regulation and control of the electromagnetic zero position.
Furthermore, an air gap adjusting gasket is arranged between a lower magnetizer of the torque motor and the servo valve base, the magnetic steel is arranged between the upper magnetizer and the lower magnetizer, the armature is fixed on the servo valve base, and the air gap adjusting gasket is selected according to a half of the difference between the lower air gap value and the upper air gap value as an air gap adjusting value.
Furthermore, the inclination angle adjusting mechanism comprises an inclination angle adjusting motor, a cam, a feedback spring, a mandril and a mandril positioning control seat;
the cam is arranged in a cavity at the bottom of the support leg of the bracket, is connected with an output shaft of the inclination angle adjusting motor and is driven by the inclination angle adjusting motor to rotate; the push rod is arranged below the cam, the push rod positioning control seat is arranged at the bottom of the supporting leg, the push rod penetrates through the push rod positioning control seat, a feedback spring is arranged between the push rod positioning control seat and the push rod positioning control seat, and the feedback spring is used for providing upward thrust of the push rod.
And further, the device also comprises a touch control operation panel, and the working air gap of the torque motor measured by the light beam sensor is subjected to real-time curve display on the touch control operation panel, so that the torque motor in a working state is dynamically tested.
Furthermore, the structural sizes of the torque motors with various specifications are arranged in the control driver, the control buttons with corresponding specifications are designed on the touch control operation panel, and the control driver receives instruction signals of the corresponding control buttons on the touch control operation panel to complete the regulation and control of the electromagnetic zero position of the torque motors with corresponding specifications.
Furthermore, a fine adjustment button is arranged on the touch control operation panel, an input function of fine adjustment of the step length is provided, a fine adjustment instruction is communicated with the fine adjustment step length through the fine adjustment button and is sent to the control driver, the control driver controls the lifting control motor according to the instruction, and then the lifting adjustment mechanism is driven to achieve fine adjustment of the longitudinal position of the light beam sensor.
Furthermore, the lifting adjusting mechanism comprises a laser position sensor, a lifting plate, a longitudinal adjusting pulley, a lifting screw and a transverse adjusting slide rail;
the lifting control motor drives the lifting screw to rotate under the control of the control driver, the lifting screw is fixedly connected with the lifting plate so as to change the longitudinal position of the lifting plate, the laser displacement sensor senses the position change of the lifting plate to generate a feedback signal to the control driver, and the control driver enables the lifting adjustment to form position closed-loop control; the lifting plate is provided with a transverse adjusting slide rail, and the transverse adjusting slide rail is provided with a light beam sensor.
Furthermore, the end part of the lifting screw rod is provided with a directional bearing, and the connection with the bracket is realized through a bearing seat.
Further, the whole device is arranged above a servo valve of the debugging test bed.
An automatic accurate quantitative regulation and control method for an electromagnetic zero position of a servo valve comprises the following steps:
s1, controlling the driver to send a command to control the lifting control motor to adjust the light beam sensor to a corresponding longitudinal position according to the structural size of the torque motor;
s2, controlling the driver to send an instruction to control the inclination angle adjusting mechanism, and adjusting the horizontal position of the light beam sensor to enable the working air gap between the light beam of the light beam sensor and the tested torque motor to be in a relatively horizontal state;
s3, the control driver judges whether the longitudinal position of the current beam sensor meets the requirement, if so, S4 is executed, otherwise, the fine adjustment direction and the fine adjustment step length are set to the control driver, the control driver controls the lifting control motor to perform fine adjustment on the longitudinal position of the beam sensor, and S4 is carried out until the longitudinal position of the beam sensor meets the requirement;
s4, synchronously testing two channels of the light beam sensor, synchronously testing an upper working air gap and a lower working air gap of the torque motor, and determining an air gap regulation value according to the upper working air gap and the lower working air gap which are measured by the control driver;
and S5, selecting a corresponding air gap adjusting gasket according to the air gap adjusting value, and installing the air gap adjusting gasket between a lower magnetizer of the torque motor and the servo valve base so as to realize quantitative adjustment and control of the electromagnetic zero position.
Compared with the prior art, the invention has the beneficial effects that:
the invention designs an automatic precise and quantitative regulation and control device suitable for the electromagnetic zero position of a servo valve with multiple specifications.
The invention can ensure that the measuring beam and the tested torque motor are in a relative horizontal state. Through the automatic identification and judgment of the air gap size in the system, when the air gap is the maximum value, the air gap is in a relative horizontal state, so that the external influence of measurement is eliminated, the accuracy of a test result is ensured, and the accurate regulation and control of the electromagnetic zero position are realized.
The invention can realize the electromagnetic zero position regulation and control of the servo valve when the servo valve is arranged on a debugging test bed and is in an oil passing state. The device belongs to independent whole, can place in the servo valve top of installing in the debugging test bench, consequently can not produce any influence to servo valve debugging process.
The invention can realize the identification and quantification of the electromagnetic zero position regulation value. According to the measured upper and lower air gap values, the required regulation and control value can be conveniently obtained through automatic calculation in the system.
The invention is suitable for the electromagnetic zero adjustment of servo valves with various specifications. The parameters of the torque motors with various specifications are preset in the system, so that the electromagnetic zero-position adaptability regulation and control of various specifications can be realized.
The invention realizes the electromagnetic zero position one-button type automatic regulation and control design. After the device is arranged above a tested product, a corresponding product button is selected on an operation panel, the longitudinal position and the relative horizontal position of the light beam sensor are automatically adjusted, and then the air gap regulation value is automatically calculated by the system, so that an operator can directly select the air gap regulation gasket with a corresponding size, and further the servo valve electromagnetic zero position is conveniently and rapidly accurately regulated and controlled, and the debugging efficiency is greatly improved.
The invention displays the air gap dynamic test data curve. The moment motor air gap measured by the light beam sensor can be subjected to real-time curve display on the touch control operation panel, so that the moment motor under the working state can be dynamically tested.
Drawings
Fig. 1-3 are general layout views of an electromagnetic zero position automatic control device of a servo valve according to the present invention, wherein fig. 2 is an enlarged view of fig. 1A, and fig. 3 is a structural view of a light beam sensor;
FIG. 4 is a schematic diagram of an electromagnetic null adjustment structure with an air gap adjustment shim;
FIG. 5 is a functional interface diagram of a touch panel;
FIG. 6 is a block diagram of an electromagnetic zero position one-touch automatic regulation workflow;
wherein, 1-lifting control motor; 2-a laser displacement sensor; 3, 11-transversely adjusting the slide rail; 4-lifting plate; 5-longitudinally adjusting the sliding rail; 6-lifting screw; 7-bearing seats; 8-a directional bearing; 9-a light beam sensor; 10-a beam sensor mounting plate; 12-a scaffold; 13-controlling the driver; 14-touch control operation panel; 15-tilt angle adjustment motor; 16-flat bond; 17-a cam; 18-a feedback spring; 19-a mandril positioning control seat; 20-a top rod; 21-beam sensor beam output; 22-beam sensor beam receiving end; 23-a torque motor; 24-lower working air gap; 25-upper working air gap; 26-an air gap adjusting shim; 27-upper magnetizer; 28-lower magnetizer; 29-magnetic steel; 30-an armature; 31-servo valve seat.
Detailed Description
The invention is further illustrated by the following examples.
As shown in fig. 1-3, the longitudinal position adjustment process: the upper computer sends out instruction signals, the lifting control motor 1 drives the lifting screw 6 to rotate, the longitudinal position of the lifting plate 4 can be driven, the laser displacement sensor 2 generates feedback signals, the lifting adjustment forms position closed-loop control, and therefore the longitudinal position of the light beam sensor 9 can be automatically, quickly and accurately tracked. In order to ensure the stability of the rotation of the screw rod, a directional bearing 8 is arranged at the end part of the screw rod; the four longitudinal adjusting sliding rails 5 reduce the possibility of lifting clamping stagnation and ensure the flexibility of movement.
As shown in fig. 1-3, the horizontal position adjustment process: the upper computer sends out an instruction signal, the inclination angle adjusting motor 15 drives the cam 17 to rotate, the ejector rod 20 is driven to output displacement, the inclination angle change of the support 12 is controlled, and the purpose of adjusting the horizontal position of the light beam sensor 9 is achieved.
As shown in fig. 1 to 3, the precise regulation and control of the electromagnetic zero position is realized: through analyzing the working principle of the light beam sensor 9 and the structure of the torque motor 23, the light beam is emitted to the light beam receiving end of the light beam sensor 9 from the light beam output end of the light beam sensor 9, therefore, when the tested torque motor 23 is in an inclined state around the y axis and the z axis after being installed, the accurate test of the air gap of the torque motor 23 cannot be influenced, only when the situation of inclination around the x axis occurs, the light beam of the light beam sensor 9 cannot be parallel to the air gap of the torque motor 23, and the light beam cannot completely pass through the air gap, so that the accuracy of the test can be influenced, and the key point of the device is positioned in the accurate control of the direction around the x axis. When the horizontal position of the light beam sensor 9 around the x axis is adjusted, the inclination angle adjusting motors I and II 15 are one group, the inclination angle adjusting motors III and IV 15 are one group, the two groups of motors work in the opposite directions simultaneously, the working air gap measured by the light beam sensor 9 is changed at the moment, the automatic identification and judgment in the system are carried out, and when the air gap is the maximum value, the light beam of the light beam sensor 9 and the working air gap of the tested torque motor 23 are in a relative horizontal state, so that the effect of automatically, quickly and accurately adjusting the horizontal position of the light beam sensor 9 is achieved, and finally, the accurate adjustment and control of the electromagnetic zero position can be realized.
As shown in fig. 1-3, the electromagnetic zero quantization regulation is realized: through the synchronous test of two channels of the light beam sensor 9, the upper working air gap 24 and the lower working air gap 24 of the torque motor 23 can be synchronously tested, through the automatic calculation inside the system, the regulation and control value required by the thickness of the air gap adjusting gasket 26 can be conveniently obtained, and further the electromagnetic zero position can be quantitatively regulated and controlled.
As shown in figures 1-3, components such as the lifting control motor 1, the laser displacement sensor 2, the light beam sensor 9, the inclination angle adjusting motor 15 and the like are all placed on the support 12, so that the device belongs to an independent whole, has the advantage of portability, can be placed above a servo valve installed on a debugging test bed, can realize the electromagnetic zero position regulation and control of the servo valve in an oil passing state, and cannot generate any influence on the debugging process of the servo valve.
Referring to fig. 4, the gap adjuster 26 is mounted between the lower magnetic conductor 28 and the servo valve base 31, the magnetic steel 29 is mounted between the upper magnetic conductor 27 and the lower magnetic conductor 28, and the armature 30 is fixed on the servo valve base 31, so that the sizes of the upper working gap 25 and the lower working gap 24 are mainly determined by the relative positions of the upper magnetic conductor and the lower magnetic conductor and the armature 30. When the thickness of the air gap adjusting shim 26 is changed, the upper magnetizer 27, the magnetic steel 29 and the lower magnetizer 28 can be seen as a whole, and generate a certain displacement relative to the servo valve base 31, but the position of the armature 30 relative to the servo valve base 31 is fixed, so that the upper magnetizer 27, the magnetic steel 29 and the lower magnetizer 28 generate a certain displacement relative to the armature 30, and the size of the upper and lower working air gaps can be changed. According to the working air gap adjusting principle, when the air gap adjusting shim 26 is selected according to the half of the difference between the lower working air gap value and the upper working air gap value as the air gap adjusting value, the purpose of adjusting the upper and lower working air gaps to be consistent can be achieved.
As shown in fig. 5, the method is suitable for the electromagnetic zero adjustment of the servo valves with various specifications: by presetting the structural sizes of the torque motors 23 with various specifications in the system and designing a plurality of product control functions on the touch control operation panel 14, corresponding product buttons are selected according to different products to be regulated during testing, and the electromagnetic zero-position adaptability regulation and control of the torque motors 23 with various specifications can be realized.
As shown in fig. 5, the air gap dynamic test data curve display is realized: the torque motor air gap measured by the light beam sensor 9 can be displayed on the touch control panel 14 in a real-time curve manner, so that the torque motor 23 in a working state can be dynamically tested.
As shown in fig. 5, the touch control panel 14 of the device is designed with product buttons, and displays the upper and lower air gaps and the adjustment values, and has a function of one-click automatic adjustment, and the working flow is as shown in fig. 6. When testing, corresponding product buttons can be selected according to different products to be adjusted, the lifting control motor 1 automatically adjusts the light beam sensor 9 to a corresponding longitudinal position, and under the action of the inclination angle adjusting motor 15, the horizontal position of the light beam sensor 9 is automatically adjusted, so that the working air gap between the light beam of the light beam sensor 9 and the tested torque motor 23 is ensured to be in a relatively horizontal state. Then, according to the upper and lower air gap values measured by the light beam sensor 9, the system automatically calculates the air gap regulation and control value, so that an operator can directly select the air gap adjusting gasket 26 with the corresponding size, accurate quantitative regulation and control of the electromagnetic zero position of the servo valve can be conveniently realized, and the debugging efficiency is greatly improved. In addition, the control panel is provided with a fine adjustment button, and the fine adjustment button has the function of fine adjustment of the longitudinal position of the light beam sensor 9 by setting a fine adjustment step length, so that the operability of the device is further improved.
The invention has not been described in detail in part in the common general knowledge of a person skilled in the art.
Claims (12)
1. The utility model provides an automatic accurate quantization of servo valve electromagnetism zero position regulates and control device which characterized in that: comprises a light beam sensor, a bracket, a control driver, a lifting control motor, a lifting adjusting mechanism and an inclination adjusting mechanism;
the support is of a four-leg structure, and the four inclination angle adjusting mechanisms are respectively arranged below the four legs of the support; the control driver, the lifting control motor and the lifting adjusting mechanism are arranged on the bracket, the light beam sensor is arranged on the lifting adjusting mechanism, and the connecting line of two adjacent supporting legs is parallel to or vertical to the light beam direction of the light beam sensor; the lifting control motor is used for driving the lifting adjusting mechanism to drive the light beam sensor to reach a preset longitudinal position under the control of the control driver, and the four inclination angle adjusting mechanisms adjust the horizontal position of the light beam sensor by adjusting the heights of the four supporting legs under the control of the control driver, so that the light beam of the light beam sensor and the working air gap of the torque motor in the tested servo valve are in a relatively horizontal state.
2. The apparatus of claim 1, wherein: the four inclination angle adjusting mechanisms adjust the horizontal positions of the light beam sensors in the following modes:
dividing two inclination angle adjusting mechanisms on two adjacent supporting legs of a light beam of a vertical light beam sensor into a group to obtain two groups of inclination angle adjusting mechanisms;
the two groups of inclination angle adjusting mechanisms work for one period simultaneously and reversely, and the working air gap of the torque motor is measured by the light beam sensor in the working process and is sent to the control driver; the reverse operation is that the heights of the supporting legs are changed, namely, the supporting legs are increased, and the supporting legs are decreased;
controlling the driver to determine the maximum value of the working air gap in one period according to the received working air gap;
and the two groups of inclination angle adjusting mechanisms continue to work reversely, and when the control driver judges that the received working air gap reaches the maximum value, the control driver sends an instruction to control the two groups of inclination angle adjusting mechanisms to stop working.
3. The apparatus of claim 1 or 2, wherein: after the horizontal position of the light beam sensor is adjusted, the upper working air gap and the lower working air gap of the torque motor are synchronously tested through the synchronous test of two channels of the light beam sensor, the control driver determines an air gap regulation value according to the measured upper working air gap and the lower working air gap, and then a corresponding air gap regulation gasket is selected to realize the quantitative regulation and control of the electromagnetic zero position.
4. The apparatus of claim 3, wherein: the air gap adjusting shim is arranged between a lower magnetizer and a servo valve base of the torque motor, the magnetic steel is arranged between the upper magnetizer and the lower magnetizer, the armature is fixed on the servo valve base, and the air gap adjusting shim is selected according to a half of the difference between a lower air gap value and an upper air gap value as an air gap adjusting value.
5. The apparatus of claim 1 or 2, wherein: the inclination angle adjusting mechanism comprises an inclination angle adjusting motor, a cam, a feedback spring, a mandril and a mandril positioning control seat;
the cam is arranged in a cavity at the bottom of the support leg of the bracket, is connected with an output shaft of the inclination angle adjusting motor and is driven by the inclination angle adjusting motor to rotate; the push rod is arranged below the cam, the push rod positioning control seat is arranged at the bottom of the supporting leg, the push rod penetrates through the push rod positioning control seat, a feedback spring is arranged between the push rod positioning control seat and the push rod positioning control seat, and the feedback spring is used for providing upward thrust of the push rod.
6. The apparatus of claim 2, wherein: the torque motor working air gap measured by the light beam sensor is subjected to real-time curve display on the touch control operation panel, so that the torque motor in a working state is dynamically tested.
7. The apparatus of claim 6, wherein: the control driver is internally provided with the structural sizes of the torque motors with various specifications, control buttons with corresponding specifications are designed on the touch control operation panel, and the control driver receives instruction signals of the corresponding control buttons on the touch control operation panel to complete the regulation and control of the electromagnetic zero position of the torque motors with corresponding specifications.
8. The apparatus of claim 6, wherein: the fine adjustment button is arranged on the touch control operation panel, an input function of fine adjustment step length is provided, the fine adjustment command is communicated with the fine adjustment step length through the fine adjustment button and is sent to the control driver, the control driver controls the lifting control motor according to the command, and then the lifting adjustment mechanism is driven to achieve fine adjustment of the longitudinal position of the light beam sensor.
9. The apparatus of claim 1, wherein: the lifting adjusting mechanism comprises a laser position sensor, a lifting plate, a longitudinal adjusting pulley, a lifting screw and a transverse adjusting slide rail;
the lifting control motor drives the lifting screw to rotate under the control of the control driver, the lifting screw is fixedly connected with the lifting plate so as to change the longitudinal position of the lifting plate, the laser displacement sensor senses the position change of the lifting plate to generate a feedback signal to the control driver, and the control driver enables the lifting adjustment to form position closed-loop control; the lifting plate is provided with a transverse adjusting slide rail, and the transverse adjusting slide rail is provided with a light beam sensor.
10. The apparatus of claim 9, wherein: the end part of the lifting screw rod is provided with a directional bearing, and the connection with the bracket is realized through a bearing seat.
11. The apparatus of claim 1, wherein: the whole device is arranged above a servo valve of the debugging test bed.
12. An automatic accurate quantitative regulation and control method for an electromagnetic zero position of a servo valve is characterized by comprising the following steps:
s1, controlling the driver to send a command to control the lifting control motor to adjust the light beam sensor to a corresponding longitudinal position according to the structural size of the torque motor;
s2, controlling the driver to send an instruction to control the inclination angle adjusting mechanism, and adjusting the horizontal position of the light beam sensor to enable the working air gap between the light beam of the light beam sensor and the tested torque motor to be in a relatively horizontal state;
s3, the control driver judges whether the longitudinal position of the current beam sensor meets the requirement, if so, S4 is executed, otherwise, the fine adjustment direction and the fine adjustment step length are set to the control driver, the control driver controls the lifting control motor to perform fine adjustment on the longitudinal position of the beam sensor, and S4 is carried out until the longitudinal position of the beam sensor meets the requirement;
s4, synchronously testing two channels of the light beam sensor, synchronously testing an upper working air gap and a lower working air gap of the torque motor, and determining an air gap regulation value according to the upper working air gap and the lower working air gap which are measured by the control driver;
and S5, selecting a corresponding air gap adjusting gasket according to the air gap adjusting value, and installing the air gap adjusting gasket between a lower magnetizer of the torque motor and the servo valve base so as to realize quantitative adjustment and control of the electromagnetic zero position.
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Cited By (1)
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|---|---|---|---|---|
| CN114321059A (en) * | 2021-11-27 | 2022-04-12 | 国营芜湖机械厂 | Mechanical zero adjustment method and device for servo valve |
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| CN203743775U (en) * | 2013-10-10 | 2014-07-30 | 国家电网公司 | Automatic leveling device for suspended equipment |
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