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Device and method for automatically testing performance of steering engine servo valve

A technology of automatic testing device and servo valve, which is applied in fluid pressure actuating device, fluid pressure actuating system testing, mechanical equipment, etc. It can solve the problem of poor test accuracy, low efficiency, and test accuracy relying on the professional skills and testing of testers. Experience and other issues, to achieve the effect of increasing the degree of automation, improving precision and accuracy, and reducing the dependence on professional skills and testing experience

Active Publication Date: 2011-12-21
NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
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AI Technical Summary

Problems solved by technology

[0007] The present invention mainly solves the problem that the existing manual test method determines that the various performances of the steering gear servo valve have low automation, low efficiency, and poor test accuracy. In addition, the loading speed of the current affects the accuracy of the test results to a large extent. Test accuracy largely depends on the professional skills and test experience of testers and other issues

Method used

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  • Device and method for automatically testing performance of steering engine servo valve
  • Device and method for automatically testing performance of steering engine servo valve
  • Device and method for automatically testing performance of steering engine servo valve

Examples

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Embodiment 1

[0027] Example 1, see figure 1 , 2 , Take the automatic performance test of YD-4 steering gear servo valve as an example, select the tested steering gear 12, and then connect the hydraulic system and circuit system;

[0028] The hydraulic system consists of a hydraulic source, a steering gear oil supply circuit, a steering gear trim valve oil supply circuit, and an oil return circuit; the hydraulic source includes hydraulic oil tank 1, low pressure oil filter 2, hydraulic pump 3, motor 4, and overflow valve 5. Accumulator 6, one-way valve 7, high pressure oil filter 8. The steering gear oil supply path includes steering gear oil supply pressure reducing valve 9, steering gear oil supply throttle valve 10 and steering gear oil supply pressure gauge 11; The oil supply circuit of the steering gear trim valve includes the steering gear trim valve supply pressure reducing valve 13, the steering gear trim valve supply throttle valve 14 and the steering gear trim valve supply pressure ga...

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Abstract

The invention discloses a device and a method for automatically testing the performance of a steering engine servo valve. The device comprises a tested steering engine, a hydraulic system and a circuit system, and is characterized in that: the hydraulic system consists of a hydraulic source, a steering engine oil supply oil way, a steering engine balancing valve oil supply oil way and an oil return oil way; in the circuit system, a digital / analog (D / A) analog output board card and a voltage / current (V / I) conversion isolating amplifier are arranged on a servo valve current control circuit of the tested steering engine; a displacement sensor is arranged at an output end of an electro-hydraulic steering engine power piston; and during test, control software of a measurement and control computer outputs current to the servo valve through the D / A analog output board card and the V / I conversion isolating amplifier according to a control rule determined by the selected testing items, controls movement of the power piston, acquires displacement of the power piston, records control voltage of the servo valve current, movement time of the power piston and other data, and processes and computes the data so as to automatically determine whether the performance of the servo valve meets requirements of related indexes. The device has high testing degree of automation, high precision and good application and popularization prospects.

Description

Technical field: [0001] The invention relates to the technical field of performance testing of a steering gear servo valve, in particular to an automatic testing method for the performance of a steering gear servo valve. Background technique: [0002] Electro-hydraulic steering gear is one of the important components of modern aircraft and helicopter control systems. It is the actuator of the autopilot and plays the role of electro-hydraulic conversion and hydraulic amplification. The servo valve is one of the core components of the steering gear. It is not only an electro-hydraulic conversion component, but also a power amplifier component. Servo valve is a precision component that combines mechanical, electronic and hydraulic technology. It combines the characteristics of electric and hydraulic. It has the advantages of high control accuracy, fast response speed, flexible signal processing, large output power and compact structure. The performance of the servo valve directly a...

Claims

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Application Information

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IPC IPC(8): F15B19/00
Inventor 刘书岩胡国才刘湘一王秀霞侯志强
Owner NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
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