模糊奇异摄动系统动态输出反馈H_控制

Dynamic Output Feedback H_ Control for Fuzzy Singularly Perturbed Systems

  • 摘要: 针对一类非线性奇异摄动系统,建立了基于T-S模糊模型的模糊奇异摄动系统模型.通过李亚普诺夫方法和Schur补定理,研究其动态输出反馈H控制.将系统动态输出反馈H控制器设计归结为求解一组与摄动参数ε无关的线性矩阵不等式,避免了由ε引起的数值求解的病态问题.所获得的控制器使闭环系统渐近稳定,并达到了给定的H性能指标.该方法适用于标准和非标准非线性奇异摄动系统.仿真实例说明了该方法的有效性.

     

    Abstract: For a class of nonlinear singularly perturbed systems,a model of fuzzy singularly perturbed systems based on T-S model is built.With the help of Lyapunov approach and Schur complement theorem,the dynamic output feedback H control of the system is investigated.The design of the dynamic output feedback H controller is solved by a set of ε-independent linear matrix inequalities,so the ill-conditioned problem caused by ε in numerical solution is avoided effectively.The obtained controller enables the closed-loop systems to be stable asymptotically and to achieve the given H performance.The proposed approach can be applied to both standard and nonstandard nonlinear singularly perturbed systems.A simulation example is provided to illustrate the effectiveness of the presented approach.

     

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