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Unsupported sensing technology of in-orbit vibration measurement of the flexible spacecraft solar array

  

  • Received:2022-06-20 Revised:2022-09-12 Online:2022-09-13 Published:2022-09-13

Abstract: Based on the self-powered wireless accelerometers network, in-orbit flexible vibration measurement and parameter identification tests for the large solar array were carried out on the Tianhe core module and Wentian lab module of China space station in May 2021 and July 2022 respectively. For the requirements of the mission, the core capabilities of the unsupported sensing technology in the space exploration mission were summarized in this paper, including self-power supply and self-charging, data transmitted between unsupported sensors, highly reliable data acquisition, high-precision time synchronization, autonomous sleep wake-up and so on. The design ideas and implementation schemes of the above capabilities were described in detail, and the actual verification results of the unsupported sensor in the space station solar array vibration measurement task were given. The effectiveness and rationality of the proposed strategies were proved based on the in-orbit test results.

Key words: space station, vibration measurement, unsupported sensing, self-power supply and self-charging, wireless acquisition, time synchronization, sleep strategy, on-orbit verification

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