Experimental Research on a Kind of High-pressure Hot Gas Servo Valve Based on PWM Principle

[摘要] High-pressure hot gas servo valve based on PWM principle is widely used in the solid attitude control system of kinetic kill vehicle and other aircrafts. In this paper, a kind of hot gas servo valve is proposed and its mathematic model is established. Also, the pressure in the chamber is tested and compared with simulation results to prove the model valid. In order to test the dynamic performance, an indirectly method of testing the piston's position is put forward and the delay time of the electromagnet and valve is tested. The results reveal that the hot gas servo valve designed in this paper has good dynamic performance and can satisfy the requirements of solid attitude control system.

[发布机构] Collage of Transportation, Ludong University, Yantai; 264025, China^1;School of Aerospace, Beijing Institute of Technology, Beijing; 100081, China^2

[效力级别] 机械制造

[关键词] Delay Time;Dynamic performance;Experimental research;High pressure;Hot gas;Kill vehicles;Mathematic model;Servo-valve