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논문 기본 정보

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(University of Ulsan) (University of Ulsan) (University of Ulsan) (University of Ulsan)
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유공압건설기계학회 유공압건설기계학회 학술대회논문집 유공압건설기계학회 2015年度 秋季 學術大會 論文集
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    초록·키워드

    Electro-hydraulic actuators (EHAs) become more and more important in the modern industry due to their advantages over electrical drives. Although EHAs have been applied to various applications for precise pressure, force, or position control tasks, operating EHA systems under faults, especially from sensors could lead the economic losses and catastrophic failure to overall system, or even put human life in danger. Thus, retaining the stability of these systems under sensor failures is one of the critical issues in developing EHAs. In this paper, a study on an advanced sensor fault tolerant control of a typical EHA with tracking control tasks under sensor-fault conditions has been carried out. Here, an extended Kalman-Bucy unknown input observer (EKBUIO) composed with a density threshold-based fault detection (DTFD) is proposed in designing the real-time sensor fault tolerant control (SFTC) of EHA system. The effectiveness of the proposed SFTC architecture has been investigated by experimenting on a test bed using an EHA in sensor failure conditions.

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      UCI(KEPA) : I410-ECN-0101-2017-550-000683914