Smart Structures and Systems

  • 제27권6호
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  • Pages.891-901
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  • 2021
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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DOI QR Code

Active structural acoustic control using an integrated control system with smart structures

  • Cui, Huaifeng (School of Mechanical Engineering, Ningbo University of Technology) ;
  • Hu, Rufu (School of Mechanical Engineering, Ningbo University of Technology) ;
  • Chen, Nan (School of Mechanical Engineering, Southeast University)
  • 투고 : 2019.02.13
  • 심사 : 2021.04.03
  • 발행 : 2021.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

An integrated control system with smart structure is proposed for active structural acoustic control (ASAC). It is mainly used to integrate the advantages of centralized and decentralized ASAC. Each smart structure contains a relatively independent controller, which forms a distributed control. The coordination and cooperation between smart structures is mainly realized by sending control factors (secondary generalized modal force) from the upper coordination unit (coordination structure) to each smart structure. The control factor can reflect the weight of each smart structure on vibration noise control, and play a key role in noise control. The control factors are extracted from the blend function in the bottom control units (smart structures) and stored in the coordination structure. This design method ensures the consistency of the internal functions of each smart structure and lays a foundation for decentralized control. In addition, whether the control factor is allocated to the smart structure depends on the real-time changes of the sound field. Through the intelligent allocation of the control factors, the global (centralized) control is realized and the coupling problem between smart structures is solved. Since the control system does not have a centralized controller, it appears as a decentralized control in form; at the same time, the centralized control in algorithm is achieved by extracting and redistributing the control factors. Therefore, the control system integrates the advantages of decentralized and centralized control.

키워드

과제정보

This work was supported by the Basic Public Welfare Research Project of Zhejiang Province, China (Grant No. LGG18E050019); A Project Supported by Scientific Research Fund of Zhejiang Provincial Education Department, China (Grant No. Y201737638); and the Natural Science Foundation of Ningbo, China (Grant No. 2019A610160).

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