| 降价观测器存在条件及在故障检测与诊断中的应用 |
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| 引用本文： | 谢铁钢,张宇河.降价观测器存在条件及在故障检测与诊断中的应用[J].北京理工大学学报,2002,22(3):355-359. |
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| 作者姓名： | 谢铁钢 张宇河 |
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| 作者单位： | 北京理工大学,自动控制系,北京,100081 |
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| 摘 要： | 研究含有广义未知输入的线性系统降价观测器存在条件.利用广义逆矩阵并构造辅助系统,将降价观测器的存在条件转化为判断辅助系统的可镇定性.通过将含有未知输入的线性系统化为含有广义未知输入系统的标准形式,将降价观测器应用于故障检测及诊断.通过在一套电气伺服系统中的仿真表明,该方法在多个故障同时发生时,可迅速实现故障检测与诊断.
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| 关 键 词： | 降价观测器 线性系统 故障检测 故障诊断 未知输入 广义逆矩阵 可镇定性 |
| 文章编号： | 1001-0645(2002)03-0355-05 |
| 收稿时间： | 2002/1/17 0:00:00 |
| 修稿时间： | 2002年1月17日 |
Condition of Existence for Reduced-Order Observer and Its Application in Fault Detection and Diagnosis |
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| XIE Tie gang and ZHANG Yu he.Condition of Existence for Reduced-Order Observer and Its Application in Fault Detection and Diagnosis[J].Journal of Beijing Institute of Technology(Natural Science Edition),2002,22(3):355-359. |
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| Authors: | XIE Tie gang and ZHANG Yu he |
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| Institution: | Dept. of Automatic Control, Beijing Institute of Technology, Beijing100081, China;Dept. of Automatic Control, Beijing Institute of Technology, Beijing100081, China |
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| Abstract: | The condition of existence of a reduced order observer for linear systems with generalized unknown inputs is studied. The existence condition is then transformed to the stabilizability of the assistant system through a generalized inverse matrix and the assistant system. The reduced order observer is applied to fault detection and diagnosis by transforming the linear system with unknown inputs to the standard form of linear system with generalized unknown inputs. By the simulation of an electrical servo system, it is shown that the method can detect and diagnose faults rapidly when several faults occur simultaneously. |
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| Keywords: | reduced order observer linear system fault detection fault diagnosis unknown input generalized inverse matrix stabilizability |
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