摘要
当网络控制系统存在非线性随机延迟时,不能直接使用传统的控制方法。针对这种随机延迟该文提出了高阶模糊控制方法。该方法在经典PID控制器的理论基础上进行改进,增加了系统输出的高阶信息,同时利用模糊控制理论对控制器参数进行在线自适应调节。为此该文首先简要地介绍了网络控制系统中存在的随机延迟,然后分析了延迟引起的非线性特征。结合该文的算法思想和模糊控制器的设计原理给出模糊控制器的设计过程。最后给出了应用此方法的一个仿真实例。
Traditional control methods can＇t be applied directly into Networked Control System （NCS） with nonlinear random delays. To deal with the delays, a high - order fuzzy control method is proposed in this paper. Based on traditional PID control theory, this method adds high - order information of the output into this paper. Meanwhile, the fuzzy control theory is used to adjust the controller parameters adaptively. At first the random delays are introduced, and then the nonlinearity character is analyzed. Through combining the idea of this paper with the design theory of Fuzzy Controller, the precise design process is presented. Finally, a simulation example is given to illustrate this method.
出处
《计算机仿真》
CSCD
2006年第8期278-282,共5页
Computer Simulation
关键词
网络控制系统
随机延迟
非线性
模糊控制
Networked control system （NCS）
Random delays
Nonlinearity
Fuzzy control
