基于符号跟随系统的无源控制设计  

Sign-following system approach to passive control design

作　　者：张侃健[1] 冯纯伯[1] 

机构地区：[1]东南大学自动化研究所,南京210096

出　　处：《东南大学学报（自然科学版）》2007年第4期610-613,共4页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(60404006)

摘　　要：研究了基于符号跟随系统(SFS)的无源控制设计问题,讨论了该控制方案的适用范围.通过构造出的一个反例,说明了并联一般的无源系统后SFS无法保证实现系统的无源化.进一步分析了引入SFS后的单位负反馈可能导致闭环系统病态的问题,由此给出了在反馈通道中引入严格真无源系统的控制方案,得到了基于无源系统理论的输出反馈控制,并作了相应的特性分析.仿真以非最小相位系统为例,所得结果表明了该控制方案的有效性.SFS的引入拓宽了经典控制方案中参数的可调范围,可以较好地改善闭环系统的动态性能.The problem of passive control design is considered based on sign-following system （SFS）, and the possible application of the above approach is discussed. A counterexample is constructed to show that the closed system is not surely passive when connecting a general passive system in parallel as a SFS. Furthermore, the possible ill-posed problem result from SFS of the closed system with a unit negative feedback is analyzed, and then output feedback control is obtained based on passive system theory by using a strictly proper passive system as a feedback. The effectiveness of the proposed methods is demonstrated by the simulation in which a non-minimum-phase system is considered. With introducing SFS, the adjustable range of the parameters in the classical control scheme can be widened and the dynamic performance of the closed system can be well improved.

关 键 词：无源性 逻辑切换 符号跟随 病态系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]