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논문 기본 정보

자료유형
학술저널
저자정보
Li, Zhiling (Department of civil and environmental engineering, Rice University) Nagarajaiah, Satish (Department of civil and environmental engineering, Rice University)
저널정보
테크노프레스 Structural monitoring and maintenance Structural monitoring and maintenance 제1권 제2호
발행연도
2014.1
수록면
213 - 230 (18page)

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A novel real-time actuator failure detection algorithm is developed in this paper. Actuator fails when the input to the structure is different from the commanded one. Previous research has shown that one error function can be formulated for each actuator through interaction matrix method. For output without noise, non-zero values in the actuator functions indicate the instant failure of the actuator regardless the working status of other actuators. In this paper, it is further demonstrated that the actuator's error function coefficients will be directly calculated from the healthy input of the examined actuator and all outputs. Hence, the need for structural information is no longer needed. This approach is termed as direct method. Experimental results from a NASA eight bay truss show the successful application of the direct method for isolating and identifying the real-time actuator failure. Further, it is shown that the developed method can be used for real-time sensor failure detection.

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