摘要
针对一阶加时滞不稳定系统提出两自由度控制改进方案,该方案的控制结构由两个控制器组成,分别作用于设定值追踪和抑制负载干扰,并且设定值追踪响应与负载干扰响应完全解耦。采用直接综合法对控制器进行参数整定,并根据最大灵敏度函数、设定值追踪响应以及负载干扰响应来选择参数λ_(d)和λ_(s)。仿真例子证明了所提结构在系统性能和鲁棒稳定性方面具有明显的优越性。
An improved two-degree-of-freedom control scheme is proposed for unstable first-order plus time delay systems.The control structure of this scheme consists of two controllers,which act on the set point tracking and load disturbance rejection respectively,and the set point tracking response is completely decoupled from the load disturbance response.This article adopts the direct synthesis method to set the parameters of the controller,and the parametersλ_(d)andλ_(s)are selected according to the maximum sensitivity function,the response of the set point tracking and the load disturbance response.The simulation examples show that the proposed structure has obvious advantages in system performance and robust stability.
作者
朱景秀
张伟
王亚刚
ZHU Jing-xiu;ZHANG Wei;WANG Ya-gang(School of Optical-electrical and Computer Engineering.University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《控制工程》
CSCD
北大核心
2021年第8期1559-1566,共8页
Control Engineering of China
基金
国家自然科学基金资助项目(11502145,61703277,61074087)。
关键词
一阶加时滞不稳定系统
最大灵敏度
鲁棒稳定性
Unstable first-order plus time delay system
maximum sensitivity
robust stability
