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根据变结构控制 ( VSC)方法及 Lyapunov稳定性理论研究一类不确定性时滞系统的无记忆变结构控制问题 ,所得的变结构控制器保证了切换函数的二次稳定性 ,并避免控制信息号颤振 .此外 ,还推出了一种具有不确定性范数上界自适应估计器的自适应变结构控制器 .仿真结果验证了所得结果的有效性和合理性
According to the variable structure control (VSC) method and the Lyapunov stability theory, a kind of memoryless variable structure control problem for a class of uncertain time-delay systems is studied. The resulting variable structure controller guarantees the quadratic stability of the switching function and avoids the control information In addition, an adaptive variable structure controller with an adaptive upper bound of the uncertainty norm is also introduced.The simulation results verify the validity and rationality of the results