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Parallel-filter-based observer control for unknown multiple narrow-band disturbance rejection.
Xu, TianRong; Feng, Nian; Ruan, Yong; Tang, Tao.
Afiliação
  • Xu T; Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu, 610209, China; Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 610209, China.
  • Feng N; Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu, 610209, China; Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 610209, China; University of Chinese Academy of Sciences, Beijing, 100039, China.
  • Ruan Y; Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu, 610209, China; Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 610209, China; University of Chinese Academy of Sciences, Beijing, 100039, China.
  • Tang T; Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu, 610209, China; Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 610209, China. Electronic address: taotang@ioe.ac.cn.
ISA Trans ; 143: 622-629, 2023 Dec.
Article em En | MEDLINE | ID: mdl-37734992
An observer-based control method with parallel Q-filter is proposed to reject unknown multiple narrow-band disturbances for line of sight stabilization in telescope systems. In general, wide-band or multiple narrow-band disturbances rejection of observer-based control can be transformed into designing Q-filter, which could be too high-order to achieve fully-accuracy digital implementation, resulting in degrading the closed-loop performance or even causing instability. Therefore, a new parallel type of Q-filters is proposed to flexibly adjust the number of Q-filter in the sensitivity function and effectively reduce the computational complexity. A sufficient condition of the effectiveness for the parallel Q-filter and the closed-loop stability is derived and verified through simulations. Furthermore, disturbance frequencies can be on-line identified to adaptively optimize the Q-filter parameters. The effectiveness of the proposed method is validated on the image-based stabilization subsystem of a segmented lightweight large-scaled diffractive telescope.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article