二阶不稳定时滞过程的二次优化控制及结构整形  

Twice Optimal Control for Unstable Second Order Process with Time Delay and Its Structure Pruning

作　　者：余艳[1] 王钦若[1] 项国波[2] 黄旭明[1] 

机构地区：[1]广东工业大学自动化学院,广东广州510006 [2]武汉理工大学自动化学院,湖北武汉430070

出　　处：《信息与控制》2016年第2期223-228,共6页Information and Control

基　　金：国家自然科学基金面上资助项目(61473331)

摘　　要：针对一类二阶不稳定时滞系统的抗扰动鲁棒性和动态响应问题,提出二次优化控制结构整形的方法来实现其优化控制.首先运用二次优化控制原理,设计系统的无穷维控制器和观测器.然后再用增强局部反馈Kf的结构整形方法,来消除其过渡过程中出现的微振现象.最后通过实例仿真与内模滤波器PID(proportionalintegral-derivative)、改进型Smith两种方案作对比研究,证明了本文方法在跟踪响应以及抗扰动鲁棒性方面的优越性.Regarding the robustness and dynamic response issue of unstable second order process with time delay,we propose a twice optimal control structure adjustment method to realize its optimization control. First,we use twice optimal control principle to design infinite dimensional controller and observer for the system. Then we increase the local feedback Kfvalue of structure adjustment to eliminate the oscillation during the transition process of twice optimal control system. Finally,simulation studies have been demonstrated to show the tracking response and disturbance resistance robustness advantages of the proposed method compared with two other schemes including PID based on internal model control（ IMC） filter and modified Smith.

关 键 词：二阶不稳定时滞过程 二次优化控制 结构整形 鲁棒性 

分 类 号：TP1[自动化与计算机技术—控制理论与控制工程]