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Dynamic loading device for dynamic pressure feedback test of servo valve

A dynamic loading and dynamic pressure feedback technology, which is applied in fluid pressure actuation devices, fluid pressure actuation system testing, mechanical equipment, etc., can solve problems such as manual adjustment and affecting test efficiency, and achieve the effect of improving efficiency and accuracy

Active Publication Date: 2016-05-25
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to keep the differential pressure stable, manual adjustment is usually required, which seriously affects the test efficiency

Method used

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  • Dynamic loading device for dynamic pressure feedback test of servo valve
  • Dynamic loading device for dynamic pressure feedback test of servo valve

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0020] Such as figure 1 As shown, a dynamic loading device for servo valve dynamic pressure feedback test provided by the present invention includes a dynamic loading cylinder 1, a displacement sensor 2, a speed sensor 3, a pressure sensor A4, a pressure sensor B5, a pressure sensor C6, and a pressure sensor D7 , Loading servo valve 8, tested servo valve 9 and dynamic pressure feedback tester 10.

[0021] A piston rod 1A is arranged in the dynamic loading cylinder 1, and a piston 1B is arranged in the middle of the piston rod 1A. The left and right ends of the piston rod 1A respectively form a sealed cavity with the inner wall of the dynamic loading cylinder 1 , and the left and right sides of the piston 1B respectively form a sealed cavity with the inner wall of the dynamic loading cylinder 1 . The left end of piston rod 1A communicates wit...

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Abstract

The invention belongs to the field of tests of an aerospace servo valve and specifically relates to a dynamic loading device for a dynamic pressure feedback test of a servo valve. The device comprises a dynamic loading cylinder, a displacement sensor, a speed sensor, a pressure sensor, a loading servo valve, the to-be-tested servo valve and a dynamic pressure feedback testing instrument, wherein a piston rod is disposed in the dynamic loading cylinder; a piston is disposed in the piston rod; and the piston rod, the piston and the inner wall of the dynamic loading cylinder form four chambers. The device provided by the invention is characterized in that the dynamic loading cylinder with the four chambers is designed; the speed sensor, the displacement sensor and the pressure sensor are separately installed on the four chambers of the cylinder body, so that a load pressure difference loading function and a state detection function can be realized simultaneously; and closed-loop control of servo loading of the dynamic hydraulic cylinder can be used to keep a load pressure difference stable, efficiency and accuracy of the dynamic pressure feedback test are increased, and production of the dynamic pressure feedback servo valve is guaranteed.

Description

technical field [0001] The invention belongs to the field of aerospace servo valve testing, in particular to a dynamic loading device for servo valve dynamic pressure feedback testing. Background technique [0002] The thrust vector servo control system of the launch vehicle often has a relatively small system damping setting due to the pursuit of fast response, and the controlled object, the engine, has a large inertia, which makes the servo system resonate at a lower frequency point and cause the control system to become unstable. Dynamic pressure feedback servo valve is a very effective solution. [0003] The dynamic pressure feedback device of the servo valve can effectively increase the system damping and improve the dynamic performance in the dynamic state, and can maintain the rigidity of the system in the steady state, so that the system has a good ability to resist load interference. Dynamic pressure feedback performance includes feedback differential pressure char...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B19/00
Inventor 陈祖希张阳
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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