摘要
研究离散时间系统变结构控制问题,提出一种新的离散变结构趋近律.利用该趋近律设计的离散变结构控制器,不仅能大幅度削弱抖振,使系统运动最终趋于原点不存在稳态振荡,而且可使系统的准滑动模态保持步步穿越切换面的基本属性,有效地改善了控制品质,提高了系统的鲁棒性.仿真结果验证了该方法的有效性与合理性.
The problem of variable structure control for discrete-time systems is considered. A new discrete reaching law is presented. The discrete-time variable structure control system, which is designed by this reaching law, not only can weaken the chattering and approach to zero diminishingly, but also can keep the basic property of quasi-sliding mode which can cross the switching surface step by step and enhance the control quality and robust performance of the control system. The simulation results validate the effectiveness and reasonability of this method.
出处
《控制与决策》
EI
CSCD
北大核心
2009年第8期1209-1213,共5页
Control and Decision
基金
国家自然科学基金项目(60704004)
关键词
离散时间系统
变结构控制
离散趋近律
抖振
Discrete-time system
Variable structure control
Discrete reaching law
Chattering
