Journal of the Korean Institute of Telematics and Electronics B (전자공학회논문지B)
- Volume 31B Issue 2
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- Pages.35-44
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- 1994
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- 1016-135X(pISSN)
Fault Diagnosis of Linear Discrete-Time Systems Based on an Unknown Input Observer
미지입력 관측기를 이용한 신형 이산 시스템의 고장 진단
Abstract
In this paper, an observer for linear discrete systems with unknown inputs is presented. The suggested observer can estimate the system state vector and the unknown inputs simultaneously. As an extension of the observer, a new fault diagnosis observer for linear discrete systems with structured uncertainty is presented. The fault diagnosis observer can detect and identify the actuator and the sensor faults as well. The stability conditionsand the design methods of the each observers are presented and the usability of the observers is shown via numerical examples.
Keywords