CN106774568A - A kind of torque-motor of electro-hydraulic servo valve test drives instrument - Google Patents
A kind of torque-motor of electro-hydraulic servo valve test drives instrument Download PDFInfo
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- CN106774568A CN106774568A CN201510823512.2A CN201510823512A CN106774568A CN 106774568 A CN106774568 A CN 106774568A CN 201510823512 A CN201510823512 A CN 201510823512A CN 106774568 A CN106774568 A CN 106774568A
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Abstract
There is profound and negative feedbck, wide range output, accurate adjustable electric current output driving instrument the invention belongs to the measuring technology of electrohydraulic servo valve, more particularly to one kind, belong to technical field of measurement and test.The torque-motor for providing a kind of electro-hydraulic servo valve test drives instrument, including the positive and negative wiring holder assembly of casing, coil, ammeter, power switch, power outlet, precision potentiator and surface-mounted integrated circuit.The present invention has profound and negative feedbck, wide range output, accurate adjustable and with digital displaying function, to meet the requirement of electrohydraulic servo valve torque-motor performance test：It is convenient for carrying, 220V Alternating Current Power Supplies, double redundancy electro-hydraulic servo valves, output current scope ± 400mA, manual degree of regulation ± 1mA can be driven.
Description
Technical field
There is profound and negative feedbck, wide range output, precision the invention belongs to the measuring technology of electrohydraulic servo valve, more particularly to one kind
Adjustable electric current output driving instrument, belongs to technical field of measurement and test.
Background technology
The torque-motor on the market not specifically designed for electro-hydraulic servo valve test drives instrument at present.Type of drive at this stage is usual
It is to rely on host computer board, is used on test set-up platform, its output area is narrow, and precision is low, is only limitted to utilize host computer
Communication mode regulation output current is carried out, and needs special DC power supply to power to use.
The content of the invention
The purpose of the present invention is：Propose a kind of there is profound and negative feedbck, wide range output, accurate adjustable and band statistics have shown work(
The electric current output driving instrument of energy, to meet the requirement of electrohydraulic servo valve torque-motor performance test：It is convenient for carrying, 220V is handed over
Stream is powered, can drive double redundancy electro-hydraulic servo valves, output current scope ± 400mA, manual degree of regulation ± 1mA.
A kind of torque-motor driving instrument of electro-hydraulic servo valve test of technical scheme offer, including casing 4, coil is positive and negative
Wiring holder assembly 1, ammeter 6, power switch 2, power outlet 3, precision potentiator 7 and surface-mounted integrated circuit 5；Wherein
The positive and negative connector assembly of coil, ammeter, power switch, power outlet, surface-mounted integrated circuit and precision potentiator are fixedly mounted
On casing；Surface-mounted integrated circuit is integrated with AC/DC power module, amplifies biasing circuit module and Voltage to current transducer electricity
Road module；Power switch has indicator lamp；Precision potentiator has adjusting knob；Power outlet 3 is used to connect 220V civil powers,
And 220V civil powers are switched to the AC/DC power module of surface-mounted integrated circuit；Power switch 3 controls connecing for power outlet 3
On and off is opened；
220V civil powers are converted to positive and negative 15V outputs by AC/DC power module；
The positive and negative 15V inputs of reference voltage module are connected with the positive and negative 15V output ends of AC/DC power module, the benchmark
Voltage module is by positive and negative 15V voltage conversions for positive and negative 5V reference voltages are exported；
The positive and negative 5V in two ends of precision potentiator is connected with the positive and negative 5V reference voltages output of reference voltage module, and precision potentiator will
Voltage output after regulation and control is to amplifying biasing circuit module；
Amplify biasing circuit module and use negative feedback amplifier circuit, and tuningout voltage letter is superimposed at the VIN+ pins of operational amplifier
Number；
Tuningout voltage signal is exported by tuningout potentiometer, the positive and negative 5V in two ends of the tuningout potentiometer and positive and negative 5V of reference voltage module
Reference voltage output connection；
The VIN- pins of voltage-current converter circuit module are connected with the output end for amplifying biasing circuit module；
Voltage signal is converted into current signal by voltage-current converter circuit module, and Voltage to current transducer module uses Current Negative Three-Point Capacitance
Circuit；The negative of the positive and negative wiring holder assembly of coil is connected to after the cathode output end series electrical flow table of described Voltage to current transducer module
Terminals, the cathode output end of described Voltage to current transducer module is connected to the positive terminals of the positive and negative wiring holder assembly of coil；
During work, 220V civil powers, the positive and negative terminals connection electrohydraulic servo valve of the positive and negative wiring holder assembly of coil are connected in power outlet
The positive and negative junction block of torque-motor, turns on the power switch, and after indicator lamp is lighted on power switch, is read from ammeter currently practical
Output current value, current output current value is adjusted according to testing requirement turn adjusting knob.
Particularly, the operating die of AC/DC power module is CFAE3D15N chips；The work core of reference voltage module
Piece is LM136-5 chips；The operational amplifier chip for amplifying biasing circuit module is OP07 chips；Voltage-current converter circuit
Module operating die be OPA547 chips, and voltage-current converter circuit module in be integrated with current-limiting resistance and sampling resistor.
Further, the multiplication factor for amplifying biasing circuit module is 1 times or 2 times.
Technique effect
For electrohydraulic servo valve A Wire/B Wire circle provides driving current, can be used for the driver of electrohydraulic servo valve.Drive electrohydraulic servo valve work
Make or complete a certain test；Constant output current, can do constant-current source and use；Exported in the range of -400mA~+400mA constant
Electric current；Load change does not influence electric current to export；Recover function with output short circuit protection.With maximum current limliting output function；Adjust
Section knob is with a scale and direction indicates.Can be used for twin coil, double remaining electro-hydraulic servos with A/B passages switching switch；
Output current -400mA~+400mA, wide ranges；Operating voltage 220V AC, it is easy to use；Electric current least regulating amount
0.5mA；Three Semi-digital minimum unit of display 1mA of display；
Brief description of the drawings
Fig. 1 is overall schematic of the invention；
Fig. 2 is structural representation of the invention；
Fig. 3 is circuit theory diagrams of the invention；
Wherein：The positive and negative wiring holder assembly of 1- coils, 2- power switches (tape light), 3- power outlets, 4- casings, the integrated electricity of 5-
Road plate, 6- ammeters, 7- precision potentiators.
Specific embodiment
A kind of torque-motor driving instrument for electro-hydraulic servo valve test of offer, including the positive and negative wiring holder assembly of casing, coil,
Ammeter, power switch, power outlet, precision potentiator and surface-mounted integrated circuit；The positive and negative connector assembly of its coil, electric current
Table, power switch, power outlet, surface-mounted integrated circuit and precision potentiator are fixedly mounted on casing；Surface-mounted integrated circuit collection
Into have AC/DC power module, amplify biasing circuit module and voltage-current converter circuit module；Power switch has finger
Show lamp；Precision potentiator has adjusting knob；Power outlet (3) electrically connects 220V cities for connecting 220V civil powers
To the AC/DC power module of surface-mounted integrated circuit；Power switch (2) controls switching on and off for power outlet (3)；
220V civil powers are converted to positive and negative 15V outputs by AC/DC power module；
The positive and negative 15V inputs of reference voltage module are connected with the positive and negative 15V output ends of AC/DC power module, the benchmark
Voltage module is by positive and negative 15V voltage conversions for positive and negative 5V reference voltages are exported；
The positive and negative 5V in two ends of precision potentiator is connected with the positive and negative 5V reference voltages output of reference voltage module, and precision potentiator will
Voltage output after regulation and control is to amplifying biasing circuit module；
Amplify biasing circuit module and use negative feedback amplifier circuit, and tuningout voltage letter is superimposed at the VIN+ pins of operational amplifier
Number；
Tuningout voltage signal is exported by tuningout potentiometer, the positive and negative 5V in two ends of the tuningout potentiometer and positive and negative 5V of reference voltage module
Reference voltage output connection；
The VIN- pins of voltage-current converter circuit module are connected with the output end for amplifying biasing circuit module；
Voltage signal is converted into current signal by voltage-current converter circuit module, and Voltage to current transducer module uses Current Negative Three-Point Capacitance
Circuit；The negative of the positive and negative wiring holder assembly of coil is connected to after the cathode output end series electrical flow table of described Voltage to current transducer module
Terminals, the cathode output end of described Voltage to current transducer module is connected to the positive terminals of the positive and negative wiring holder assembly of coil；
During work, 220V civil powers, the positive and negative terminals connection electrohydraulic servo valve of the positive and negative wiring holder assembly of coil are connected in power outlet
The positive and negative junction block of torque-motor, turns on the power switch, and after indicator lamp is lighted on power switch, is read from ammeter currently practical
Output current value, current output current value is adjusted according to testing requirement turn adjusting knob.
Particularly, the operating die of AC/DC power module is CFAE3D15N chips；The work core of reference voltage module
Piece is LM136-5 chips；The operational amplifier chip for amplifying biasing circuit module is OP07 chips；Voltage-current converter circuit
Module operating die be OPA547 chips, and voltage-current converter circuit module in be integrated with current-limiting resistance and sampling resistor.
Further, the multiplication factor for amplifying biasing circuit module is 1 times or 2 times.
Further, described power switch carries indicator lamp.
Claims (4)
1. a kind of electro-hydraulic servo valve test torque-motor drive instrument, including the positive and negative wiring holder assembly (1) of casing (4), coil, ammeter (6),
Power switch (2), power outlet (3), precision potentiator (7) and surface-mounted integrated circuit (5)；The positive and negative connector assembly of its coil, ammeter,
Power switch, power outlet, surface-mounted integrated circuit and precision potentiator are fixedly mounted on casing；Surface-mounted integrated circuit is integrated with exchange and turns direct current
Source module, amplification biasing circuit module and voltage-current converter circuit module；Power switch has indicator lamp；Precision potentiator has adjusting knob；
220V civil powers are switched to the AC/DC power module of surface-mounted integrated circuit for connecting 220V civil powers for power outlet (3)；Power switch
(2) switching on and off for power outlet (3) is controlled；
220V civil powers are converted to positive and negative 15V outputs by AC/DC power module；
The positive and negative 15V inputs of reference voltage module are connected with the positive and negative 15V output ends of AC/DC power module, and the reference voltage module will just
Negative 15V voltage conversions are exported for positive and negative 5V reference voltages；
The positive and negative 5V reference voltages output of the positive and negative 5V in two ends of precision potentiator and reference voltage module is connected, and precision potentiator is by the voltage after regulation and control
Export amplification biasing circuit module；
Amplify biasing circuit module and use negative feedback amplifier circuit, and tuningout voltage signal is superimposed at the VIN+ pins of operational amplifier；
Tuningout voltage signal is exported by tuningout potentiometer, and the positive and negative 5V in two ends of tuningout potentiometer is exported with the positive and negative 5V reference voltages of reference voltage module
Connection；
The VIN- pins of voltage-current converter circuit module are connected with the output end for amplifying biasing circuit module；
Voltage signal is converted into current signal by voltage-current converter circuit module, and Voltage to current transducer module uses current negative feedback circuit；Described
The negative terminals of the positive and negative wiring holder assembly of coil are connected to after the cathode output end series electrical flow table of Voltage to current transducer module, described voltage x current turns
The cathode output end for changing the mold block is connected to the positive terminals of the positive and negative wiring holder assembly of coil；
During work, 220V civil powers are connected in power outlet, and the positive and negative terminals connection electrohydraulic servo valve torque-motor of the positive and negative wiring holder assembly of coil is just
Negative junction block, turns on the power switch, and after indicator lamp is lighted on power switch, currently practical output current value is read from ammeter, according to testing requirement
Turn adjusting knob adjusts current output current value.
2. a kind of torque-motor of electro-hydraulic servo valve test according to claim 1 drives instrument, it is characterised in that：AC/DC power
The operating die of module is CFAE3D15N chips；The operating die of reference voltage module is LM136-5 chips；Amplify the computing of biasing circuit module
Amplifier chip is OP07 chips；Voltage-current converter circuit module operating die is collection in OPA547 chips, and voltage-current converter circuit module
Into current-limiting resistance and sampling resistor.
3. a kind of torque-motor of electro-hydraulic servo valve test according to claim 2 drives instrument, it is characterised in that：Amplify biasing circuit mould
The multiplication factor of block is 1 times or 2 times.
4. a kind of torque-motor of electro-hydraulic servo valve test according to claim 1 and 2 drives instrument, it is characterised in that：Described power supply
Switch carries indicator lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510823512.2A CN106774568B (en) | 2015-11-24 | 2015-11-24 | A kind of torque-motor driving instrument of electro-hydraulic servo valve test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510823512.2A CN106774568B (en) | 2015-11-24 | 2015-11-24 | A kind of torque-motor driving instrument of electro-hydraulic servo valve test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106774568A true CN106774568A (en) | 2017-05-31 |
| CN106774568B CN106774568B (en) | 2018-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510823512.2A Active CN106774568B (en) | 2015-11-24 | 2015-11-24 | A kind of torque-motor driving instrument of electro-hydraulic servo valve test |
Country Status (1)
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| CN (1) | CN106774568B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009065809A (en) * | 2007-09-10 | 2009-03-26 | Yaskawa Electric Corp | Power conversion apparatus, and current detecting method thereof |
| US20110110205A1 (en) * | 2006-06-05 | 2011-05-12 | Mediatek Inc. | Apparatus for Controlling Servo Signal Gains of an Optical Disc Drive and Method of the Same |
| CN203872088U (en) * | 2013-08-28 | 2014-10-08 | 日本电产高科电机株式会社 | Motor driving device |
| CN105041783A (en) * | 2015-07-24 | 2015-11-11 | 苏州市大力电器有限公司 | Novel hydraulic motor drive controller |
-
2015
- 2015-11-24 CN CN201510823512.2A patent/CN106774568B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110110205A1 (en) * | 2006-06-05 | 2011-05-12 | Mediatek Inc. | Apparatus for Controlling Servo Signal Gains of an Optical Disc Drive and Method of the Same |
| JP2009065809A (en) * | 2007-09-10 | 2009-03-26 | Yaskawa Electric Corp | Power conversion apparatus, and current detecting method thereof |
| CN203872088U (en) * | 2013-08-28 | 2014-10-08 | 日本电产高科电机株式会社 | Motor driving device |
| CN104426427A (en) * | 2013-08-28 | 2015-03-18 | 日本电产高科电机株式会社 | Motor driving device |
| CN105041783A (en) * | 2015-07-24 | 2015-11-11 | 苏州市大力电器有限公司 | Novel hydraulic motor drive controller |
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| Publication number | Publication date |
|---|---|
| CN106774568B (en) | 2018-03-02 |
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