CN105203953A - Device and method for detecting output displacement of torque motor through jet flow servo valve - Google Patents
Device and method for detecting output displacement of torque motor through jet flow servo valve Download PDFInfo
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- CN105203953A CN105203953A CN201510651940.1A CN201510651940A CN105203953A CN 105203953 A CN105203953 A CN 105203953A CN 201510651940 A CN201510651940 A CN 201510651940A CN 105203953 A CN105203953 A CN 105203953A
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Abstract
The invention relates to a device and method for detecting the output displacement of a torque motor through a jet flow servo valve. An eccentric wheel is installed in a kidney-shaped groove in the upper surface of a supporting block and fixedly connected with an adjusting shaft, a displacement sensor is installed in the other side of the supporting block, a cube frame is installed on the support block, a clamp, the motor and a detection mandrel are installed in the cube frame, and an iron core of the displacement sensor is hung at the outer end of the detection mandrel. An ultralow frequency signal generator is connected with a motor coil through a V-I signal conversion module of a motor hysteresis tester, the displacement sensor is connected with an LVDT signal modem module, and motor input current signals and voltage signals modulated and demodulated by an LVDT are collected, drawn and displayed through an industrial personal computer collecting plate card or an X-Y recorder. According to the device, the feature of the output displacement of the motor is sensed through the displacement sensor, and the corresponding relation between the input and the output of the motor can be disclosed with the combination of an input feature so that the performance and parameters of the motor can be judged, and the performance of the motor and the quality of the forming process can be analyzed.
Description
Technical field
The present invention relates to a kind of pick-up unit and method of torque-motor output displacement, especially a kind of parameter of curve input of the electric signal of setting being converted to mechanical signal exports, to differentiate performance, the quality of conversion, carry out pick-up unit and the method for the torque-motor output displacement analyzed and study.
Background technology
At modern automation control development field, using electric signal as control source, have efficient, simple and direct, it is characterized in that effective, reliable and general, by various forms such as short range, long-range, wired, controlled in wireless, have high science, practical value, obtained a wide range of applications, especially in high-tech area, be in a leading position in scientific technological advance and core status.
Electric signal converts mechanical signal to by magnetic field and exports, thus realizes the technology that every mechanical motion belongs to most advanced and sophisticated, relates to amplification and the conversion of electric signal.Amplify and the performance of conversion, quality and efficiency reflection be the height of scientific and technological level and ability.Should the decay of anti-stop signal and distortion, prevent from changing the inefficacy that rear machinery exports again.
Jet servo valve, as the representative products of throw-over gear, from the input of electric signal, converts mechanical signal to through magnetic field, finally exports with the form of hydraulic power, completes by the transfer process of electricity, magnetic, machine, liquid.Wherein hydraulic power can realize multistage amplification.The core of servo-valve series products is exactly " electricity-magnetic-machine " transfer process of the first order, realizes the structure of this function and the torque-motor parts (hereinafter referred to as " motor ") of jet servo valve.
Affect the performance parameter of motor and a lot of because have of quality, the main material capability parameter having magnetic, spring function part and the components and parts formed in motor part; All links of motor and assembly and part forming process, as project organization parameter, size, manufacturing process, supervisory routine and method etc.Relevant parameter is obtained, to differentiate the Performance and quality of motor finally by detection means.Thus the performance of the material such as analyzing magnetic, elasticity, the project organization parameter of motor, technique, the work quality of each link in forming process.Especially more seem important when product introduction engineering makes the volume production stage, to guaranteeing product quality, each link of stable prod forming process is indispensable means.
Summary of the invention
The present invention is pick-up unit and the method that will provide a kind of jet servo valve torque-motor output displacement, for accurately detecting, obtaining motor output parameter, compares, differentiates the accordance of its performance, validity and reliability with input signal and design parameter.
For achieving the above object, technical scheme of the present invention is: a kind of pick-up unit of jet servo valve torque-motor output displacement, comprise displacement transducer, eccentric wheel, adjustment axle, back-up block, Signal Generator of Ultra-low Frequency, motor hysteresis tester, LVDT modulating and demodulating signal module, in the waist type groove of described back-up block upper surface, eccentric wheel is housed, eccentric wheel is fixedly connected with the adjustment axle of the waist type groove through back-up block, back-up block opposite side is built with displacement transducer, and the center, longitudinal cross-section of the waist type groove of the axes normal of displacement transducer on back-up block, tetragonal body framework is installed in the top of back-up block, sectional fixture in tetragonal body framework, fixture is built with motor and detecting core shaft, described detecting core shaft outer end hangs with the iron core of displacement transducer, described Signal Generator of Ultra-low Frequency is by the V-I signal conversion module connecting motor coil of motor hysteresis tester, for generation of the current signal of motor detecting, institute's displacement sensors connects LVDT modulating and demodulating signal module, for exporting the voltage signal of motor nozzle oscillation displacement, the voltage signal of described motor input current signal and LVDT modulation /demodulation is by industrial computer analog input card or X-Y recorder collection, drawing, display.
Described tetragonal body framework comprises mounting base, sunk screw, column, top board, fillister head screw, Compress Spring, screw rod, described mounting base is connected by four root posts being positioned at corner with between top board, wherein, mounting base has the side of semiclosed concave plane upward, and fixed by sunk screw and column, top board fillister head screw and column are fixed, on described two screw sleeves after Compress Spring, be each passed through upper and lower four through holes of tetragonal body framework and screw in the screw on back-up block.
Described adjustment axle is limited in the lateral attitude of kidney slot by dog screw; Eccentric wheel along with adjustment axle the anglec of rotation be 360 °.
Below described back-up block, corner is fixed on base plate by hexagon socket head cap screw and supporting sleeve.
A detection method for jet servo valve torque-motor output displacement, concrete steps are as follows:
Step one: by the V-I signal conversion module of motor coil connecting motor hysteresis tester, drawn by aviation plug;
Step 2: displacement transducer primary and secondary coil implements modulation /demodulation by the LVDT modulation /demodulation module of aviation plug access motor hysteresis tester;
Step 2: the amount of moving up and down rotating adjustment axial adjustment tetragonal body framework, to guarantee that the iron core of displacement transducer is in the output zero-bit of displacement transducer;
Step 4: by Signal Generator of Ultra-low Frequency to the input of motor hysteresis tester, setting motor command signal;
Step 5: by the voltage signal of motor current signal, nozzle oscillation displacement, inputs the X-Y recorder of data acquisition or the collection terminal daughter board of industrial computer data capture card respectively by the aviation plug of motor hysteresis tester;
Step 6: operational torque motor performance testing software or X-Y recorder, image data, curve plotting, calculating, printing;
Step 7: according to motor performance test parameter: rated current, maximum displacement (±), zero partially, saturation current, the linearity, symmetry, gain, pass judgment on motor quality.
Beneficial effect of the present invention:
The present invention can pass judgment on the performance of motor fast, intuitively, parameter.Jet servo valve belongs to the product of high, precision and frontier, and high-tech area is widely used, with high content of technology, value costliness.The function of servo-valve forms primarily of two-stage, the power amplification of the conversion of the signal of the first order and the second level, and what amplification power amplification can arrange again, so that servo-valve can control, and power output reaches tens, up to a hundred, the topworks of even going up kiloton.The function of motor is exactly the first order of servo-valve, function switching signal be servo-valve complete functional requirement prerequisite, be core.The realization of its function and guaranteeing, the factor related to, difficulty and complexity, far above power amplification function, breach the sport technique segment of motor, and the parameter stabilizing motor just means the quality that ensure that servo-valve,
Structure of the detecting device of the present invention is simple and easy, compact, practical, cost of manufacture is not high, detect data validity and fiduciary level high, be beneficial to the analysis and judgment of performance, and motor forms the level of overall process and the exploration of ability and raising, is also beneficial to improving grade of properties of product.
Detection method of the present invention is simple, understand, convenient, easily grasp.
Accompanying drawing explanation
Fig. 1 is the main cut-open view of torque-motor output displacement structure of the detecting device of the present invention;
Fig. 2 is that motor is installed and fixture installation direction schematic diagram;
Fig. 3 is that motor detects schematic diagram;
Fig. 4 is detection system block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figures 1 to 4, a pick-up unit for jet servo valve torque-motor output displacement, comprises base plate 1, supporting sleeve 2, hexagon socket head cap screw 3,6-pin socket 4, holding screw 5, displacement transducer 6, eccentric wheel 7, dog screw 8, adjustment axle 9, mounting base 10, sunk screw 11, column 12, top board 13, fillister head screw 14, Compress Spring 15, screw rod 16, back-up block 17, Signal Generator of Ultra-low Frequency, motor hysteresis tester, LVDT modulating and demodulating signal module, industrial computer analog input card or X-Y recorder.
The structure of pick-up unit is as follows:
Back-up block 17 4 is fixed on base plate 1 by hexagon socket head cap screw 3 and each four of supporting sleeve 2; The upper surface of back-up block 17 is processed with waist type groove and sensor mounting hole, and the central axis of mounting hole is in the center, longitudinal cross-section of waist type groove, and the mounting hole being processed with adjustment axle 9 from longitudinal lateral surface that waist type groove is nearest communicates with kidney slot; Eccentric wheel 7 is in place in kidney slot by adjustment axle 9, by dog screw 8, adjustment axle 9 is limited in the lateral attitude of kidney slot; Eccentric wheel 7 and adjustment axle 9 dog screw 8 are tightened to assembly, and eccentric wheel 7 can 360 ° of rotations along with adjusting axle 9.Mounting base 10 is processed with the side of semiclosed concave plane upward, and sunk screw 11 screws in from mounting base 10 opposite side and fixes four root posts 12, and top board 13 is fixed on after on four root posts 12 with fillister head screw 14 and defines a tetragonal body framework; Described tetragonal body framework is positioned in the top of back-up block 17, and mounting base 10 is in bottom, and on mounting base 10, the opening port of concave plane has sensor mounting hole side on back-up block 17; After described two screw rods 16 put Compress Spring, four through holes passed through on tetragonal body framework screw in the screw on back-up block 17, two horizontal directions of tetragonal body framework are spacing by two screw rods 16, are merely able to rotate along with the eccentric wheel in back-up block 17 surperficial waist type groove and move up and down 3 millimeters; The outside surface of the parallel side of back-up block 17 upper sensor mounting hole is provided with 6-pin socket 4, the extension line access 6-pin socket 4 of displacement transducer 6.
The installation process that motor detects is as follows:
Described with behind the hole of motor 18 bottom nozzle mouth line-up jig base plate centre bit, be fixed in fixture 19; The delivery outlet of described motor---nozzle installs detecting core shaft 20, and detecting core shaft holds vertical position with fixture bottom surface; Described maintenance detecting core shaft horizontal position, along it in the other direction, by fixture from the mounting base concave plane opening direction of pick-up unit, against bottom its concave plane and be filled to limit position; The position of described stationary fixture in tetragonal body framework (referring to sketch 3); The outer end of detecting core shaft being hung up the iron core 21 of displacement transducer 6, guaranteeing that iron core can at the endoporus central shaft of sensor to moving freely.Refer to Fig. 2, Fig. 3.
The current signal of motor detecting, is occurred by Signal Generator of Ultra-low Frequency, after the V-I signal conversion module of motor hysteresis tester, connect motor coil.Armature drives jet pipe jet hole to swing under the effect of alternating magnetic field, and the displacement of swing gives the iron core of sensor by detecting core shaft transmission.One group of drive coil of displacement transducer 8, two groups of secondary coil differential access LVDT modulating and demodulating signal modules, iron core makes cutting magnetic line movement in displacement transducer 6, and the change of its displacement exports corresponding voltage signal through modulation /demodulation module.The voltage signal of motor input current signal and LVDT modulation /demodulation is by industrial computer analog input card or X-Y recorder collection, drawing, display.
As shown in Figure 4, a kind of detection method of jet servo valve torque-motor output displacement, concrete implement and operation steps as follows:
Step one: the V-I signal conversion module of motor coil connecting motor hysteresis tester, is drawn by aviation plug;
Step 2: displacement transducer 8 primary and secondary coil implements modulation /demodulation by the LVDT modulation /demodulation module of aviation plug access motor hysteresis tester;
Step 3: rotate the amount of moving up and down that adjustment axle 9 adjusts tetragonal body framework, to guarantee that iron core is in the output zero-bit of displacement transducer 6;
Step 4: by Signal Generator of Ultra-low Frequency to the input of motor hysteresis tester, setting motor command signal;
Step 5: by the voltage signal of motor current signal, nozzle oscillation displacement, inputs data acquisition equipment (the collection terminal daughter board of X-Y recorder or industrial computer data capture card) respectively by the aviation plug of motor hysteresis tester;
Step 6: operational torque motor performance testing software or X-Y recorder, image data, curve plotting, calculating, printing;
Step 7: according to motor performance test parameter: rated current, maximum displacement (±), zero partially, saturation current, the linearity, symmetry, gain, pass judgment on motor quality.
Claims (5)
1. the pick-up unit of a jet servo valve torque-motor output displacement, comprise displacement transducer (6), eccentric wheel (7), adjustment axle (9), back-up block (17), Signal Generator of Ultra-low Frequency, motor hysteresis tester, LVDT modulating and demodulating signal module, it is characterized in that: in the waist type groove of described back-up block (17) upper surface, eccentric wheel (7) is housed, eccentric wheel (7) is fixedly connected with the adjustment axle (9) of the waist type groove through back-up block, back-up block (17) opposite side is built with displacement transducer (6), and the center, longitudinal cross-section of the waist type groove of the axes normal of displacement transducer (6) on back-up block (17), tetragonal body framework is installed in the top of back-up block (17), sectional fixture (19) in tetragonal body framework, fixture (19) is built with motor and detecting core shaft (20), described detecting core shaft (10) outer end hangs with the iron core (21) of displacement transducer (6), described Signal Generator of Ultra-low Frequency is by the V-I signal conversion module connecting motor coil of motor hysteresis tester, for generation of the current signal of motor detecting, institute's displacement sensors (8) connects LVDT modulating and demodulating signal module, for exporting the voltage signal of motor nozzle oscillation displacement, the voltage signal of described motor input current signal and LVDT modulation /demodulation is by industrial computer analog input card or X-Y recorder collection, drawing, display.
2. the pick-up unit of jet servo valve torque-motor output displacement according to claim 1, it is characterized in that: described tetragonal body framework comprises mounting base (10), sunk screw (11), column (12), top board (13), fillister head screw (14), Compress Spring (15), screw rod (16), four root posts (12) by being positioned at corner between described mounting base (10) with top board (13) are connected, wherein, mounting base (10) has the side of semiclosed concave plane upward, and fixed by sunk screw (11) and column (12), top board (13) fillister head screw (14) and column (12) are fixed, after described two screw rods (16) put Compress Spring, be each passed through on tetragonal body framework, lower four through holes screw in the screw on back-up block (17).
3. the pick-up unit of jet servo valve torque-motor output displacement according to claim 1, is characterized in that: described adjustment axle (9) is limited in the lateral attitude of kidney slot by dog screw (8); Described eccentric wheel (7) along with adjustment axle (9) the anglec of rotation be 360 °.
4. the pick-up unit of jet servo valve torque-motor output displacement according to claim 1, is characterized in that: described back-up block (17) below corner is fixed on base plate (1) by hexagon socket head cap screw (3) and supporting sleeve (2).
5. application rights requires a detection method for the pick-up unit of the jet servo valve torque-motor output displacement described in any one of 1-4, and it is characterized in that, concrete steps are as follows:
Step one: by the V-I signal conversion module of motor coil connecting motor hysteresis tester, drawn by aviation plug;
Step 2: displacement transducer (8) primary and secondary coil implements modulation /demodulation by the LVDT modulation /demodulation module of aviation plug access motor hysteresis tester;
Step 2: the amount of moving up and down rotating adjustment axle (9) adjustment tetragonal body framework, to guarantee that the iron core of displacement transducer (6) is in the output zero-bit of displacement transducer (6);
Step 4: by Signal Generator of Ultra-low Frequency to the input of motor hysteresis tester, setting motor command signal;
Step 5: by the voltage signal of motor current signal, nozzle oscillation displacement, inputs the X-Y recorder of data acquisition or the collection terminal daughter board of industrial computer data capture card respectively by the aviation plug of motor hysteresis tester;
Step 6: operational torque motor performance testing software or X-Y recorder, image data, curve plotting, calculating, printing;
Step 7: according to motor performance test parameter: rated current, maximum displacement (±), zero partially, saturation current, the linearity, symmetry, gain, pass judgment on motor quality.
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| CN201510651940.1A CN105203953B (en) | 2015-10-10 | 2015-10-10 | The detection means and method of jet servo valve torque-motor output displacement |
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| CN201510651940.1A CN105203953B (en) | 2015-10-10 | 2015-10-10 | The detection means and method of jet servo valve torque-motor output displacement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110360187A (en) * | 2019-08-26 | 2019-10-22 | 上海衡拓液压控制技术有限公司 | Jet pipe type Servo Valve's Slide Valve axial direction match grinding and zero characteristic test device |
| CN115425873A (en) * | 2022-08-30 | 2022-12-02 | 上海衡拓液压控制技术有限公司 | Zero position adjusting control device of direct-acting linear force motor |
| CN109738795B (en) * | 2018-12-09 | 2023-06-09 | 西安航天精密机电研究所 | Multistage motor rotor magnetic pole detection device |
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| CN109738795B (en) * | 2018-12-09 | 2023-06-09 | 西安航天精密机电研究所 | Multistage motor rotor magnetic pole detection device |
| CN110360187A (en) * | 2019-08-26 | 2019-10-22 | 上海衡拓液压控制技术有限公司 | Jet pipe type Servo Valve's Slide Valve axial direction match grinding and zero characteristic test device |
| CN115425873A (en) * | 2022-08-30 | 2022-12-02 | 上海衡拓液压控制技术有限公司 | Zero position adjusting control device of direct-acting linear force motor |
| CN115425873B (en) * | 2022-08-30 | 2024-04-05 | 上海衡拓液压控制技术有限公司 | Zero position adjusting and controlling device of direct-acting linear force motor |
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