Optimal parity vector sensitive to designated sensor fault
Optimal parity vector sensitive to designated sensor fault
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DOI：
10.1109/7.805431
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发表时间：
1999-10-01
影响因子：
4.4
通讯作者：
Zhang, HY
中科院分区：
文献类型：
--
作者：
Jin, H;Zhang, HY
基于奇偶校验空间的构造和奇偶校验向量的正交约束条件，提出了利用最优奇偶校验向量进行故障检测和隔离的方法。其主要思想是设计一个类似于Zhang和Patton（1993）提出的标准的性能标准，但对指定传感器的故障最敏感，而对其他传感器的故障和未知输入（例如噪声）最不敏感。通过蒙特卡罗仿真表明，所提出的选择最优奇偶校验向量的方法大大提高了故障检测能力，并且故障隔离的有效性优于广义似然检验（GLT）方法。
Based on the parity space construction and the orthogonal constraint condition of parity vector, the approach of fault detection and isolation using optimal parity vector is presented. Its main idea Is to design a performance criterion similar to the criterion presented by Zhang and Patton (1993), but most sensitive to the designated sensor's fault and least sensitive to other sensor's fault and unknown inputs such as noises. Through the Monte-Carlo simulation, it is shown that the proposed approach of choosing optimal parity vector greatly increases the ability of fault detection and the effectiveness of fault isolation is better than the generalized likelihood test (GLT) approach.