Smart Structures and Systems

  • 제14권6호
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  • Pages.1269-1289
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  • 2014
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Analysis of delay compensation in real-time dynamic hybrid testing with large integration time-step

  • Zhu, Fei (State Key Laboratory of Hydroscience and Engineering, Tsinghua University) ;
  • Wang, Jin-Ting (State Key Laboratory of Hydroscience and Engineering, Tsinghua University) ;
  • Jin, Feng (State Key Laboratory of Hydroscience and Engineering, Tsinghua University) ;
  • Gui, Yao (State Key Laboratory of Hydroscience and Engineering, Tsinghua University) ;
  • Zhou, Meng-Xia (State Key Laboratory of Hydroscience and Engineering, Tsinghua University)
  • 투고 : 2014.04.10
  • 심사 : 2014.08.20
  • 발행 : 2014.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

With the sub-stepping technique, the numerical analysis in real-time dynamic hybrid testing is split into the response analysis and signal generation tasks. Two target computers that operate in real-time may be assigned to implement these two tasks, respectively, for fully extending the simulation scale of the numerical substructure. In this case, the integration time-step of solving the dynamic response of the numerical substructure can be dozens of times bigger than the sampling time-step of the controller. The time delay between the real and desired feedback forces becomes more striking, which challenges the well-developed delay compensation methods in real-time dynamic hybrid testing. This paper focuses on displacement prediction and force correction for delay compensation in the real-time dynamic hybrid testing with a large integration time-step. A new displacement prediction scheme is proposed based on recently-developed explicit integration algorithms and compared with several commonly-used prediction procedures. The evaluation of its prediction accuracy is carried out theoretically, numerically and experimentally. Results indicate that the accuracy and effectiveness of the proposed prediction method are of significance.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

참고문헌

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피인용 문헌

  1. Stability analysis of MDOF real-time dynamic hybrid testing systems using the discrete-time root locus technique vol.44, pp.2, 2015, https://doi.org/10.1002/eqe.2467
  2. Real-time hybrid simulation of full-scale tuned liquid column dampers to control multi-order modal responses of structures vol.138, 2017, https://doi.org/10.1016/j.engstruct.2017.02.004
  3. Improvement of Real-Time Hybrid Simulation Using Parallel Finite-Element Program pp.1559-808X, 2018, https://doi.org/10.1080/13632469.2018.1469442
  4. Advances in Real-Time Hybrid Testing Technology for Shaking Table Substructure Testing vol.6, pp.None, 2014, https://doi.org/10.3389/fbuil.2020.00123
  5. Stability Prediction for Real-Time Hybrid Simulation with Different Physical and Numerical Substructure Discretization Using Asynchronous Multirate Simulation vol.147, pp.11, 2014, https://doi.org/10.1061/(asce)em.1943-7889.0001992