摘要
针对不确定离散时间系统,提出一种基于离散时变趋近律的准滑模控制方法.该方法不仅能够加快系统趋近模态的趋近速度,缩短到达时间,而且能够减小准滑动模态带宽,有效改善系统动态品质,增强系统鲁棒性,并无控制抖振和稳态抖振产生.控制律形式简单、利于实现.仿真结果表明了所提出方法的有效性.
A quasi-sliding-mode control design method based on discrete time-variant reaching law is considered for uncertain discrete-time linear systems.The quasi-sliding-mode control system can not only increase the reaching speed of reaching-mode and decrease the reaching time,but also reduce the region of quasi-sliding-mode,improve the dynamic quality,and increase the system robust performance.The undesired chattering of the system states and the control signal with crossing the sliding surface in every successive sampling period are avoided.It is convenient to apply for its simpleness of form.Simulation results show the effectiveness of proposed method.
出处
《控制与决策》
EI
CSCD
北大核心
2010年第5期797-800,共4页
Control and Decision
关键词
离散时间系统
准滑模控制
离散趋近律
鲁棒性
Discrete-time systems
Quasi-sliding-mode control
Discrete reaching law
Robustness
