摘要
提出离散变结构控制系统的变速趋近律和比例—等速—变速控制策略。以变速趋近律为到达条件 ,可产生扇形切换区 ,并可期待原点的稳定性。将变速趋近律和指数趋近律组合使用 ,可形成一种新的控制策略。它克服了两种趋近律的缺点 ,保留了其优点 ,使系统性能得以改善。
The variable rate reaching law and proportional-constant-variable rate control strategy are introduced. The special feature of variable rate reaching law is that it is directly proportional to the norm of state vector and can result in a sector-shaped switching region. The stability at the origin can be expected. On the basis of the variable rate reaching law and exponential rate reaching law, a proportional-constant-variable rate control strategy is formed. It overcomes the shortcomings of the two laws and retains their merits. Thus the performance of system is improved.
出处
《控制与决策》
EI
CSCD
北大核心
2000年第3期329-332,共4页
Control and Decision
关键词
离散变结构控制系统
趋近律方法
PCV控制
discrete-time systems, variable structure systems, sliding mode control, reaching law method
