【摘要】 为了诊断出一类具有未知扰动和模型参数不确定的离散时滞系统中的故障,采用构建故障观测器的方法对系统的故障检测问题进行了研究.通过基于线性矩阵不等式(LMI)的方法,将故障诊断问题转化为系统鲁棒稳定性的分析问题,并给出了该问题的解的存在的LMI条件和求法.文中提出的方法既提高了故障对残差的敏感性,又有效的抑制了干扰,从而提高了故障检测的效果.更多还原

【Abstract】 In order to diagnose the fault occurred in a class of uncertain disturbance and uncertain dynamic time-delay discrete systems,the state observer based method is used.Based on the LMI approach,the problem of system fault diagnosis can be substituted for that of analysis of the robust control,and the LMI conditions and solving methods are also given.Finally,a numerical example has been presented to illustrate the feasibility and effectiveness of the proposed approach.更多还原