Functional observer for time-delay systems with unknown inputs and output feedback stabilization
含未知输入的时滞系统的函数观测器及输出反馈镇定

The design of linear functional observer for time-delay systems with unknown inputs is concerned.Under some rank conditions without loss of generality,sufficient conditions for the existence of the observers dependent on and independent of delays are given in terms of linear matrix inequality (LMI).An improved method for the functional observer design is proposed.Moreover,the design of the reduced-order state observer is considered and the observer-based feedback stabilization controller is obtained.Then the eigenvalues separation of the closed-loop can be realized and the internal stability of the closed-loop is guaranteed.A detailed example is presented for the method.