【摘要】 针对目前涉及较少的非均匀采样数据系统故障检测研究,研究了一类基于观测器的故障检测滤波器设计问题;对于非均匀采样数据系统,首先利用提升技术推导出系统的提升状态空间模型,然后选用基于未知输入观测器的故障检测滤波器来作为残差产生器;同时给出一种故障检测滤波器设计的H_∞最优化设计方法,并给出其最优解及存在条件;最后通过一个示例进行验证,结果证明了该方法的有效性;该方法能够有效地实现对非均匀采样数据系统的故障的检测。更多还原

【Abstract】 The problem of observer-based fault detection filter(FDF)for a class of non-uniformly sampled-data multirate systems is studied. A lifting technique is used to derive the lifted state-space model and an unknown input observer(UIO) is considered as FDF to generate residuals.The design of FDF is formulated as an H_∞optimization problem and a solvable condition as well as an optimal solution are derived.A numerical example is given to illustrate the effectiveness of the proposed method.This proposed method can detect the fault of non-uniformly sampled-data multirate sys- tems effectively.更多还原