摘要
对于缺乏精确模型的过程或参数时变的滞后过程,传统Smith预估计器难以达到满意的控制效果。变论域模糊控制能够对一些非线性的、无对象模型的系统进行控制,并基本消除了系统的静态误差,但在对迟延时间较大的系统进行控制时容易产生震荡。针对具有较大纯迟延时间的系统,该文提出了基于Smith预估计器的变论域模糊控制方案。该方案将Smith预估计器和变论域模糊控制方式相结合,较好地克服了常规变论域模糊控制和传统Smith预估计控制所存在的主要问题。通过仿真实验分析,证明了该控制方案的有效性。
In regard the process lacking of precise model or parameter time variable and delay, traditional Smith predictor is difficult to acquire satisfactory control purpose. Fuzzy control with variable region can control some nonlinear or system lacking of object model, and can eliminate static state error, but it will bring vibration to large pure time - delay system usually. A fuzzy control project based on variable region control for large pure time - delay system is proposed in this paper. In order to overcome the vibration problem existing in common fuzzy control with variable region and traditional Smith predictor,the Smith predictor is combined with variable region fuzzy control. The results of simulation experiments prove that this project is correct and practicable.
出处
《计算机仿真》
CSCD
2005年第8期148-150,共3页
Computer Simulation
关键词
纯迟延系统
变论域模糊控制
预估计器
Pure time - delay system
Fuzzy control with variable region
Predictor
