摘要
提出一种基于局部T-S模型的非线性系统非脆弱多模型切换控制,针对一类非线性系统,首先将其输入空间划分为若干个区域,在区域内设计局部T-S模型和控制器,这样在模糊规则数相同的情况下由于模糊论域的变小从而提高了逼近精度。然后根据所选定的变量,通过多模型切换控制,将相应的区域控制器切换为全局控制器,而其他控制器不起作用,实现对整体非线性系统的逼近与控制。同时研究了在控制器增益存在加性摄动的情况下,非脆弱状态反馈控制器的设计方案。仿真结果证明了该方法的有效性。
A non-fragile multi-model switching control is proposed for a class of nonlinear systems based on local T-S models. Firstly, the input space is divided into multiple regions, local T-S models and controllers are designed in each region, such that the approach precision is improved when the fuzzy domain is decreased on a constant fuzzy rule. Then, a region controller chosen accrding to the selected variables by the multiple-model switching control, is switched to the whole controller and that other controllers donrt operate, the approach and the control of the entire nonlinear system are realized. Meanwhile, the design scheme of non-fragile state-feedback controllers is developed in the presence of additive controller gain perturbations. The effectiveness of the proposed method is demonstrated by simulation results.
出处
《南京航空航天大学学报》
CAS
CSCD
北大核心
2008年第3期335-339,共5页
Journal of Nanjing University of Aeronautics & Astronautics
基金
国家自然科学基金(90405011)资助项目
