一类非线性切换系统任意切换采样控制设计

Arbitrarily switching sampling-data control design for a class of switched nonlinear systems

中文关键词  切换非线性系统  采样数据控制  输出反馈  任意切换

英文关键词  switched nonlinear systems  sampled-data control  output feedback  arbitrary switching

中文摘要

      本文针对一类具有非严格反馈形式的非线性切换系统, 在输出只在采样点可获得的情况下, 提出了一种基 于模糊采样观测器的自适应输出反馈控制方法. 该方法降低了现有任意切换控制研究结果中因共同控制思想导致 的控制器设计的保守性, 避免了迭代过程对虚拟控制的反复求导引发的计算爆炸现象及控制器高增益的弊端. 切 换的自适应律突显了每个子系统的特性, 建立的采样控制器节约了信息传输资源. 共同Lyapunov函数理论确保了 相应闭环切换系统所有变量在任意切换信号下的一致有界性.

英文摘要

      For a class of switched non-strict feedback nonlinear systems with measurable output only at the sampling points, this paper presents an adaptive output feedback control design method based on a fuzzy sampling observer. The given method reduces the conservation of the existing results led to by common control thoughts under arbitrary switching. Both the“explosion of complexity”problem resulting from the repeated differentiation for the virtual controls during the iterative process and high gain phenomenon of the constructed common controller are avoided in this paper. The designed switched adaptive laws highlight the characteristic of each switched subsystem. Information transmission resources can be saved by the constructed controller depending on sampling data. The common Lyapunov function theory ensures that all variables of the corresponding closed-loop switched systems are uniformly bounded under arbitrary switching.