一种新的非最小相位系统的控制方法  

A Novel Control Method for Non-Minimum Phase Systems

作　　者：何真[1] 陆宇平[1] 郑成军[1] 

机构地区：[1]南京航空航天大学自动化学院,江苏南京210016

出　　处：《信息与控制》2006年第5期560-563,共4页Information and Control

摘　　要：非最小相位系统的控制中,需要抑制由不稳定零点引起的负调并同时缩短系统的调节时间.针对非最小相位系统负调与调节时间的相互影响及负调与不稳定零点的相互关系,提出将控制过程分为抑制负调阶段和跟踪输入阶段,并适时改变系统不稳定零点数,用遗传算法统一优化各阶段的控制器参数.仿真结果表明该控制方法大大减弱了负调,并同时缩短了调节时间,达到了良好的控制效果.*For the control of non-minimum phase systems, there is a need to solve the problem of tradeoffs between undershoot caused by unstable zeros and settling time. Considering the coupling of undershoot and settling time and the relationships between unstable zeros and undershoot, the control process is divided into undershoot eliminating stage and input tracking stage, and the number of unstable zeros is changed in proper time. The different parameters of the controllers in the two stages are optimized with genetic algorithm. Simulation results show that the undershoot is mitigated significantly and the settling time is shortened with the proposed control method, proving the effectiveness of the proposed control method.

关 键 词：非最小相位系统 PID 遗传算法 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]