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.
出处
《航天器环境工程》
2007年第5期304-309,6,共6页
Spacecraft Environment Engineering
关键词
模糊pid控制
热试验
超调量
参数自整定
Fuzzy PID control
thermal test
overshoot
parameter auto-adjusting
