PCHD系统的参数镇定  

Parametric stabilization of port-controlled Hamiltonian systems with dissipation

作　　者：陈宁[1] 戴佳阳[1] 郭宇骞[1] 桂卫华[1] 熊丝琦[1] 

机构地区：[1]中南大学信息科学与工程学院,长沙410083

出　　处：《哈尔滨工业大学学报》2012年第11期112-117,共6页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(61074001);中央高校基本科研业务费专项资金资助项目(2010QZZD016)

摘　　要：采用无源性的控制方法研究了端口受控耗散哈密顿(PCHD)系统的参数镇定问题.对于含未知参数的PCHD系统,根据无源特性设计控制器使闭环系统的平衡点随参数漂移时,仍能保持稳定.所设计的控制器的结构与原系统结构相同,这样不仅使得闭环系统保持耗散结构而且使得闭环能量分布随参数的漂移而变化,且总在平衡点处达到极小,从而建立PCHD系统参数稳定性.以励磁系统为例,分析了该系统参数变化对平衡点的影响,设计了使励磁系统参数稳定的控制器,仿真例子证明了设计的有效性.This paper investigates parametric stabilization of port-controlled Hamiltonian systems with dissipation （PCHD）. A controller is designed to make the PCHD system parametric stable as the parameters drift based on its passivity. The form of the controller is related to PCHD system. Thus, the closed-loop system maintains dissipative form and the energy function achieves its minimal value at the equilibrium point determined by the unknown parameter. An excitation system is taken as an example, and the effect of equilibrium point of the system is analyzed as the parameter varies. A controller is designed to make the excitation system parametric stable. Simulation results are given to show the effectiveness of the proposed method.

关 键 词：参数稳定性 HAMILTONIAN结构 参数镇定 无源性控制 

分 类 号：TM301[电气工程—电机]