摘要
针对一类具有函数控制增益的非线性相似组合大系统,基于一种修改的李亚普诺夫函数并利用Ⅱ型模糊系统的通用逼近能力,提出了一种稳定自适应分散模糊控制器设计的新方案。该方案能够避免现有的一些模糊控制器设计中对控制增益一阶导数上界的要求。通过理论分析,证明了闭环分散模糊控制系统是全局稳定的,跟踪误差收敛到零。
A new scheme of a decentralized adaptive fuzzy controller for a class of nonlinear composite systems with similarity is proposed in this paper. The design is based on a modified Lyapunov function and the approximation capability of the second type fuzzy systems. In addition, the approach is avoid the requirement of the upper bound of the first time derivative of the control gain, which is assumed to be known a priori in some of the exiting control schemes. By theoretical analysis, the closed-loop fuzzy control system is proven to be globally stable in the sense that all signals involved are bounded, with tracking errors converging to zero.
出处
《宁波职业技术学院学报》
2009年第5期5-9,共5页
Journal of Ningbo Polytechnic
关键词
非线性相似组合大系统
模糊控制
滑模控制
自适应控制
全局稳定性
nonlinear composite system with similarity
fuzzy control
sliding mode control
adaptive control
global stability
