一种流量可调燃气发生器压强控制算法的研究  

Research on pressure control algorithm for flow adjustable gas generator

作　　者：刘源翔[1] 姚晓先[1] 聂聆聪[2] 宋晓东[1] 

机构地区：[1]北京理工大学宇航学院,北京100081 [2]中国航天科工集团公司三十一所,北京100074

出　　处：《固体火箭技术》2014年第1期43-46,85,共5页Journal of Solid Rocket Technology

摘　　要：分析了流量可调燃气发生器的工作原理,建立了流量可调燃气发生器的稳态与动态模型,得出了燃气发生器动态时的压强传递函数,并分析了系统时间常数,增益的影响因素,表明燃气发生器动态模型为变参数系统。基于分析结果,设计一种前馈自适应PID控制器,有效地克服了系统参数变化对控制带来的影响,提高了系统的响应速度与控制精度。仿真表明,相对于传统的PID控制算法,前馈自适应PID控制具有良好的动态性与鲁棒性。The operating principle of flow adjustable gas generator was analyzed.Steady and dynamic model of operating process were derived.The transfer function of gas generator at dynamicstate was gained and influencing factors on gain and time parameter of the system were analyzed.The results show that the dynamic model of gas generator is a variation parameters system.Based on the a nalysis of the result, a feedforward adaptive PID control algorithm was designed, which could overcome the instability induced by the variation parameters of the system, and improve the response speed and control accuracy of system.Numerical simulation results show that the feedforward adaptive PID control,compared with traditional PID control, has better dynamic performance and stronger ro bustness.

关 键 词：燃气发生器 压强控制 变参数系统 前馈自适应PID 

分 类 号：V438[航空宇航科学与技术—航空宇航推进理论与工程]