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A dynamic loading device for servo valve dynamic pressure feedback test

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

Active Publication Date: 2018-07-27
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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  • Abstract
  • Description
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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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  • A dynamic loading device for servo valve dynamic pressure feedback test
  • A dynamic loading device for servo valve dynamic pressure feedback test

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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 aerospace servo valve testing, in particular to a dynamic loading device for servo valve dynamic pressure feedback testing, which includes a dynamic loading cylinder, a displacement sensor, a speed sensor, a pressure sensor, a loading servo valve, a servo valve to be tested and a dynamic loading device. Pressure feedback tester; there is a piston rod in the dynamic loading cylinder, a piston is arranged in the middle of the piston rod, and four cavities are formed by the piston rod, the piston and the inner wall of the dynamic loading cylinder. The present invention adopts a dynamic loading cylinder designed with four cavities, and installs speed sensors, displacement sensors and pressure sensors on the four cavities of the cylinder respectively, so that the load pressure difference loading and state detection functions can be realized at the same time; at the same time, the servo loading dynamic The closed-loop control of the hydraulic cylinder maintains the stability of the load pressure difference, improves the efficiency and accuracy of the dynamic pressure feedback test, and provides guarantee for the production of the dynamic pressure feedback servo valve.

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 Patents(China)
IPC IPC(8): F15B19/00
Inventor 陈祖希张阳
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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