摘要
电控安溢活门由主阀和指挥阀构成,指挥阀由压力传感器、控制系统、比例电磁阀以及相关接线等附件组成,用来控制主阀背压腔的压力,从而实现主阀的启闭。控制系统采用PID控制原理,控制器由比例(P)电路、积分(I)电路和微分(D)电路线性组合而成,对主阀背压腔压力和气枕压力这两个控制对象进行调节。试验表明,在小流量工况下,相对于机械式指挥阀,该控制系统调节下的气枕压力更平稳,控制精度更高。
The electric relief valve is consisted of main valve and leading valve. The leading valve is consisted of pressure sensors, control system, solenoid-operated proportional valve and wirings, etc. The backing pressure of main valve which controls open and close of main valve is adjusted by the leading valve. The control principle of PID is used by the control system of leading valve, which is consisted of proportion （P） circuit, integration （I） circuit and differentiation （D） circuit. The backing pressure of main valve and the pressure of pneumatic cushion are adjusted by PID control. The experiment shows that on the low flux working condition, compared with mechanical leading valve, the pressure of pneumatic cushion is more stable and a higher control accuracy is obtained.
出处
《导弹与航天运载技术》
北大核心
2009年第3期32-36,共5页
Missiles and Space Vehicles
关键词
安溢活门
控制系统
比例电磁阀
Relief valve
Control system
Electric proportional valve
