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.
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.
出处
《控制理论与应用》
EI
CAS
CSCD
北大核心
2008年第2期294-298,共5页
Control Theory & Applications
基金
国家自然科学基金资助项目(60573123)
浙江省科技计划重点项目(2003C21005)
关键词
网络控制系统
时滞
PI控制
模糊逻辑补偿
networked control systems time delay PI control fuzzy logic compensation