变采样周期网络控制系统的随机最优控制  

Stochastic Optimal Control for Networked Control System With Variable Sampling Period

作　　者：时维国[1] 卢小永 

机构地区：[1]大连交通大学电气信息学院,辽宁大连116028

出　　处：《工业控制计算机》2016年第9期12-13,共2页Industrial Control Computer

摘　　要：针对网络控制系统中的时延不确定性和系统状态难以检测的问题,提出设计状态观测器重构系统状态,将当前时刻的时延值作为采样周期建立变采样周期网络控制系统模型,把系统转化为没有时延的时变系统;并提出了一种随机最优状态反馈控制器的设计方法,有效地提高了系统的控制性能和实时性。最后仿真证明该方法具有理想的实验补偿效果。Aiming at the problems of uncertain time delay and system state can＇t detect easily in networked control sys- tem,a state observer is presented to reconstruct system states,the time delay occurred at current sampling time is taken as the sampling period to establish the networked control system model,then the system is transformed into a time-varying system without time delay.And a stochastic optimal state feedback controller is designed to improve the system＇s control performance and real-time performance.Finally,simulation results show that the method has a good effect on time delay compensation.

关 键 词：网络控制系统 变采样周期 时延补偿 控制器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]