4.6 Article

An Adaptive and Robust Control Strategy for Real-Time Hybrid Simulation

期刊

SENSORS
卷 22, 期 17, 页码 -

出版社

MDPI
DOI: 10.3390/s22176569

关键词

sliding mode control; bounded-gain forgetting; least-squares estimator; robustness; adaptation; real-time hybrid simulation; benchmark

资金

  1. National Key Research and Development Plans of China [2019YFE0121900]

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This paper proposes a novel RTHS control strategy that combines the theories of adaptive control and robust control to simplify the control system design and achieve the adaptability and robustness of the system.
A real-time hybrid simulation (RTHS) is a promising technique to investigate a complicated or large-scale structure by dividing it into numerical and physical substructures and conducting cyber-physical tests on it. The control system design of an RTHS is a challenging topic due to the additional feedback between the physical and numerical substructures, and the complexity of the physical control plant. This paper proposes a novel RTHS control strategy by combining the theories of adaptive control and robust control, where a reformed plant which is highly simplified compared to the physical plant can be used to design the control system without compromising the control performance. The adaptation and robustness features of the control system are realized by the bounded-gain forgetting least-squares estimator and the sliding mode controller, respectively. The control strategy is validated by investigating an RTHS benchmark problem of a nonlinear three-story steel frame The proposed control strategy could simplify the control system design and does not require a precise physical plant; thus, it is an efficient and practical option for an RTHS.

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