直驱燃气调节阀的高精度高响应控制策略研究

针对固体姿轨控制系统燃气调节阀在精度和响应上日益提高的性能需求,提出了一种动圈式电磁直线执行器直驱燃气调节阀的方案。通过分析其原理及特点,提出了基于逆系统+PI分段控制的方法:对于整个运动过程采用逆系统控制方案,确保系统快速响应;趋近于目标位移时采用PI控制方法,实现对位置的精准控制。基于Simulink建立了直驱燃气调节阀的仿真模型,并搭建试验系统。通过仿真和试验验证了控制算法的有效性,结果表明:在任意目标行程下的响应时间小于10 ms, 阀芯位移控制精度达到±0.02 mm,控制算法不仅满足高响应和高精度的性能要求,同时还具有一定抗负载扰动能力和对参数变化的鲁棒性。

High Precision and Response Control Strategies for Direct-drive Gas Regulating Valve

To meet the increasing requirements of the gas regulating valve on the precision and the response performance, this paper presents a kind of gas regulating valve direct-drived by the moving coil electromagnetic linear actuator. By analyzing its principle and characteristics, the segment control method which combines of inverse system control and PI control is proposed :allow for fast response performance of the system, the inverse system control works during the whole movement ;in view of high precision demand, PI control works when the movement approached the target displacement. Simulation and experimental system setup are used to demonstrate the effectiveness of the proposed control method. The experimental results show that response time is less than 10 ms, and steady accuracy is among ±0.02 mm, which indicates the proposed control method not only meets the performance requirements, but also has a certain ability to resist load disturbance and robustness to parameters′ variation.