论文部分内容阅读
针对网络控制系统(NCS)中的随机时延问题,根据实际网络时延的分布情况,提出一种新的具有随机时延的网络控制系统的建模方法——离散T-S模型,并在此基础上应用并行分布补偿原理(PDC)设计模糊控制器.同时提出一种新的模糊控制系统隶属函数的确定方法,利用Lyapunov定理和线性矩阵不等式(LMI)研究系统的稳定性问题,给出了基于LMI的模糊控制器的设计方法.最后通过仿真实例验证了该控制方法能使具有时延的网络控制系统稳定.
Aiming at the random delay problem in Network Control System (NCS), a new method of modeling the networked control system with random delay based on the distribution of actual network delay is proposed (PDC) is used to design fuzzy controller.A new method to determine the membership function of fuzzy control system is also proposed.The Lyapunov theorem and the linear matrix inequality (LMI) are used to study the stability of the system, LMI fuzzy controller design method.Finally, the simulation example shows that the control method can make the network control system with time delay stable.