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针对一类不确定离散系统,提出一种基于偏差分离的输出反馈双控制策略,首先设计动态输出反馈控制器镇定其标称系统(即不确定性为零的情形);然后通过构造降维观测器,在线获取不确定性信息,并采用线性的补偿器实时补偿系统的不确定性.该控制策略采用线性控制,在工程中可以方便地实现,具有好的工程意义.理论分析证明了闭环指数渐近稳定的充分条件.仿真结果表明该双控制策略的有效性.
Aiming at a class of uncertain discrete systems, an output feedback double control strategy based on deviation separation is proposed. First, the dynamic output feedback controller is designed to stabilize its nominal system (that is, the uncertainty is zero). Then, Which can obtain the uncertainty information online and compensate the system’s uncertainty in real time by a linear compensator.The control strategy can be easily implemented in the project with good engineering significance.The theoretical analysis proves that the closed-loop index Asymptotic stability of the sufficient conditions.The simulation results show the effectiveness of the dual control strategy.