【摘要】 针对现代工业过程中常用的网络PI控制系统,分析了网络所诱导的时滞对PI控制系统性能的影响,设计了一个模糊逻辑补偿器来实现对网络所诱导的时滞的补偿.利用Hermite-Biehler引理在准多项式稳定性问题上的推广,研究了具有模糊逻辑补偿的网络PI控制系统的稳定性问题,给出了使闭环系统稳定的模糊逻辑调节参数的取值范围.仿真结果验证了理论分析结果的有效性.更多还原

【Abstract】 For the networked PI control systems in many modern industrial processes,the effect of network-induced time delay on the performance of PI control systems is analyzed.A fuzzy logic modulator is designed to compensate the network-induced time delay.The problem of stabilizing networked PI control systems with fuzzy logic compensation is studied by applying the extension of the Hermite-Biehler theorem to the quasi-polynomial stability problem.The region of fuzzy logic modulator parameter value for the stability of the networked closed-loop system is provided.Simulation result shows the validity of the proposed work.更多还原