模糊自整定PID控制及其在航天产品真空热试验中的应用分析  

Fuzzy auto-adjusting PID control and its application analysis in vacuum thermal tests of space products

作　　者：张军[1] 郭赣[1] 王奕荣[1] 

机构地区：[1]北京卫星环境工程研究所,北京100094

出　　处：《航天器环境工程》2007年第5期304-309,6,共6页Spacecraft Environment Engineering

摘　　要：文章首先分析了航天产品热试验时被控对象的特点,并进行了建模分析,接着介绍了如何通过参数自整定技术获得PID的3个初始参数,并进行了模糊自校正PID控制器设计。为了检验该控制方法的控制效果,文章选取了3次有代表性的试验数据进行了仿真分析。结果表明,模糊自校正PID控制方法具有适应性强、控制精度高、抑制试验系统温度滞后明显的优点,该方法较原控制方法超调量有所减小,过渡过程有所加快,抗干扰能力显著增强,较好地解决了控制系统快速性和小超调量之间的矛盾。This paper analyzes the characteristics of space products under thermal tests with modeling.Three parameters of PID control are obtained by parameters auto-adjusting method.Fuzzy control is used then to adjust these three parameters according to temperature error and its variations.Using typical test data,simulations are carried out. The results show that compared with the former control method,auto-adjusting fuzzy PID control can decrease the overshoot,accelerate transition process and enhance the capability of anti-disturbance.A coordination between rapid transition process and small overshoot is achieved.

关 键 词：模糊pid控制 热试验 超调量 参数自整定 

分 类 号：V416.4[航空宇航科学与技术—航空宇航推进理论与工程] TP273[自动化与计算机技术—检测技术与自动化装置]