【摘要】 针对应用公共Lyapunov函数方法和模糊Lyapunov函数方法判定离散T-S模糊控制系统稳定性存在的保守性和难度,在定义离散型分段模糊Lyapunov函数的基础上,应用并行分布补偿方法(PDC)设计出使模糊系统全局渐近稳定的控制器,并提出和证明了一个新的判定闭环离散T-S模糊系统稳定的充分条件,该条件降低了上述方法的保守性和难度。通过一个仿真例子验证了方法的有效性。更多还原

【Abstract】 For the conservatism and difficulty of checking the stability of discrete T-S fuzzy control system with the common Lyapunov function approach and the fuzzy Lyapunov function approach, a fuzzy controller was designed to acquire globally asymptotical stability for discrete fuzzy system with the method of parallel distributed compensation (PDC) after the definition of a piecewise fuzzy Lyapunov function. Then a new sufficient condition to check the stability of closed-loop discrete T-S fuzzy system was proposed and proved. This condition is less conservative and difficult than above approaches. At last, a simulation example shows that the approach is effective.更多还原