含未知输入的离散奇异系统的观测器设计

针对线性离散奇异系统研究了状态方程和测量方程均包含未知输入干扰的状态估计问题，在特定的假设条件下，通过系统输入-状态对的非奇异变换，把离散奇异系统等价地转化为常规状态空间系统的相应问题．然后用已知的方法设计常规状态空间系统的观测器，从而得到奇异系统的输入解耦观测器，并给出了这种观测器的存在条件．

Design of Obesrver with Unknown Inputs for Discrete Singular Syetems

A new design method of a new observer is proposed for linear discrete singular system with unknown input disturbance appearing both in process and measurement equations. Under three specific conditions, an equivalent problem for standard state space systems is derived from nonsingular transformation of input-state for systems. An observer of standard state space systems is designed by using well-known teehniques, so the input decoupled observer of the singular linear systems is obtained and the existing condition of this observer is given.