摘要
为了保证闭环系统的鲁棒稳定性,根据不确定系统的名义模型设计理想滑模面,并以名义模型作为预测模型,利用当前及过去时刻的滑模信息预测将来时刻的滑模动态,将预测控制理论中滚动优化、反馈校正的思想引入离散滑模控制系统的设计,提出了基于单值预估控制算法的离散滑模控制系统设计方法。仿真结果表明,该方法不仅完全消除了抖振现象,且能保证闭环系统的鲁棒稳定性。另外,由于采用了单值预估,使得控制算法非常简单。
This paper presents a new algorithm to the sliding mode control design for uncertain discrete -time systems based on the predictive control theory. The algorithm uses a nominal model to determine i-deal sliding surface and to predict future sliding mode dynamics, conducts receding optimization, and makes feedback correction. The new method can eliminate chattering effectively and ensure the closed -loop system to be robust stable. Also, it is easy to calculate. The proposed algorithm is applied to a DC servo system. Simulation results verify its effectiveness.
出处
《电机与控制学报》
EI
CSCD
北大核心
2005年第3期257-260,共4页
Electric Machines and Control
