基于新型趋近律的非线性积分滑模控制方法  

Nonlinear Integral Sliding Mode Control Method Based on New Reaching Law

作　　者：李逃昌[1] LI Tao-chang(School of Electrical and Control Engineering,Liaoning Technical University,Huludao 125105,China)

机构地区：[1]辽宁工程技术大学电气与控制工程学院

出　　处：《控制工程》2019年第11期2031-2035,共5页Control Engineering of China

基　　金：辽宁省博士科研启动基金(201601364);辽宁工程技术大学校基金(20160050T);辽宁省自然科学基金(201602350)

摘　　要：针对一类不确定非线性系统的鲁棒控制问题,提出一种基于新型滑模趋近律的非线性积分滑模控制方法。首先,设计了一种非线性积分滑模面,保证系统在滑动模态阶段具有较好的性能。其次,提出一种新型快速滑模趋近律,证明了其有限时间可达特性。进而基于提出的非线性积分滑模面和新型快速滑模趋近律进行了滑模控制器设计,推导了闭环滑模控制系统存在有界干扰时的干扰稳定界。最后,通过仿真验证了所提方法的有效性和优越性。A nonlinear integral sliding mode control method based on a new reaching law is proposed for a class of nonlinear systems with uncertainty.First,a kind of nonlinear integral sliding mode surface was designed and good performance during the sliding mode stage was ensured.Second,a new fast reaching law was constructed and the finite-time reachability property of the reaching law was verified.And then,a sliding mode controller was designed based on the proposed nonlinear integral sliding mode surface and the reaching law.The stability bound of the closed-loop sliding mode control system with bounded disturbances was derived.Finally,the effectiveness and superiority of the proposed method was verified by a series of simulation experiments.

关 键 词：滑模控制 趋近律 滑模面 有限时间 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]