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Volume 8 Issue 4
Apr.  2021

IEEE/CAA Journal of Automatica Sinica

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Hamed Habibi, Ian Howard, Silvio Simani and Afef Fekih, "Decoupling Adaptive Sliding Mode Observer Design for Wind Turbines Subject to Simultaneous Faults in Sensors and Actuators," IEEE/CAA J. Autom. Sinica, vol. 8, no. 4, pp. 837-847, Apr. 2021. doi: 10.1109/JAS.2021.1003931
Citation: Hamed Habibi, Ian Howard, Silvio Simani and Afef Fekih, "Decoupling Adaptive Sliding Mode Observer Design for Wind Turbines Subject to Simultaneous Faults in Sensors and Actuators," IEEE/CAA J. Autom. Sinica, vol. 8, no. 4, pp. 837-847, Apr. 2021. doi: 10.1109/JAS.2021.1003931

Decoupling Adaptive Sliding Mode Observer Design for Wind Turbines Subject to Simultaneous Faults in Sensors and Actuators

doi: 10.1109/JAS.2021.1003931
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  • This paper proposes an adaptive sliding mode observer (ASMO)-based approach for wind turbines subject to simultaneous faults in sensors and actuators. The proposed approach enables the simultaneous detection of actuator and sensor faults without the need for any redundant hardware components. Additionally, wind speed variations are considered as unknown disturbances, thus eliminating the need for accurate measurement or estimation. The proposed ASMO enables the accurate estimation and reconstruction of the descriptor states and disturbances. The proposed design implements the principle of separation to enable the use of the nominal controller during faulty conditions. Fault tolerance is achieved by implementing a signal correction scheme to recover the nominal behavior. The performance of the proposed approach is validated using a 4.8 MW wind turbine benchmark model subject to various faults. Monte-Carlo analysis is also carried out to further evaluate the reliability and robustness of the proposed approach in the presence of measurement errors. Simplicity, ease of implementation and the decoupling property are among the positive features of the proposed approach.


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    • A simple design enabling the detection of simultaneous sensor and actuator faults,
    • Recovering the principle of separation and enabling the use of the nominal controller,
    • Easy to implement and computationally-inexpensive wind turbine control design.


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