摘要
针对SISO非仿射非线性系统,提出一种新型自主构架模糊控制器.此控制器由鲁棒控制器与自主构架模糊系统构成.模糊系统初始只含有一条规则,根据系统误差和ε完备性2条准则自主增加规则及隶属函数,从而完善模糊系统结构,逼近非线性系统不确定量.模糊系统利用"伪模糊输出"法对新增规则后件初始化,考虑到实际计算能力,采用替换隶属函数机制限制规则数目.通过理论推导证明了系统的稳定性,理论和半实物仿真实验验证了所提出方法的有效性.
A self-structuring fuzzy controller（SFC） is proposed for the non-affine nonlinear SISO system. The controller consists of a robust controller and a self-structuring fuzzy system（SFS）. The fuzzy system employed to approximate nonlinear system uncertainty has one rule initially. Two criteria are used for generating rules and membership functions, system error and？？-completeness. The new rules are initialized by using the“pseudo fuzzy output”method. And considering the practical computing ability, an algorithm is proposed to replace the membership function, so that the number of rules never exceeds a predefined upper bound. The closed-loop stability is guaranteed. Theoretical simulation results and semi-physical simulation results show the effectiveness of the proposed approach.
出处
《控制与决策》
EI
CSCD
北大核心
2014年第8期1532-1536,共5页
Control and Decision
基金
国家自然科学基金项目(50775170
51105290
51035006
50805111
51175398)
关键词
自主构架模糊系统
非仿射非线性系统
鲁棒控制器
半实物
self-structuring fuzzy system
nonaffine nonlinear system
robust controller
semi-physical
