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To meet the requirements of high-stiffness locking, low-impact unlocking and release for the active segment of large-scale optical payloads in space, a novel lock-release mechanism has been designed. This paper provides a detailed description of the structure and working principle of the mechanism. Furthermore, an implicit relationship proxy model between design variables and performance responses of the mechanism is constructed based on the Kriging method. Through the non-dominated sorting genetic algorithm (NSGA-II), key parameters of the mechanism are optimized, resulting in a stiffness enhancement of 3.7%, a 5.2% reduction in contact stress, and a 4.9% decrease in mass. Finally, multiple sets of identification-level tests for the mechanism demonstrate its excellent stiffness and low shock unlocking and release characteristics, meeting the in-orbit requirements for a certain type of large optical payload.

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High-Stiffness, Low-Impact Lock-Release Mechanism for Large Optical Payload in Space

  • 会议论文

  • 发表日期：

    2025年

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  • Jiewei Dong,
  • Aiping Yin,
  • Yan Zhang,
  • Zhendong Xu,
  • Fei Li,
  • Xueqiang Wang,
  • Kuicheng Xian,
  • Zhiyi Wang

摘要

To meet the requirements of high-stiffness locking, low-impact unlocking and release for the active segment of large-scale optical payloads in space, a novel lock-release mechanism has been designed. This paper provides a detailed description of the structure and working principle of the mechanism. Furthermore, an implicit relationship proxy model between design variables and performance responses of the mechanism is constructed based on the Kriging method. Through the non-dominated sorting genetic algorithm (NSGA-II), key parameters of the mechanism are optimized, resulting in a stiffness enhancement of 3.7%, a 5.2% reduction in contact stress, and a 4.9% decrease in mass. Finally, multiple sets of identification-level tests for the mechanism demonstrate its excellent stiffness and low shock unlocking and release characteristics, meeting the in-orbit requirements for a certain type of large optical payload.