The scientific research mission of the China Survey Space Telescope (CSST) imposes rigorous requirements on the observation precision. The survey module is the most important scientific payload of the CSST and will conduct the wide-field multiband imaging and slitless spectroscopy survey at a resolution close to that of the Hubble Space Telescope. The focal plane of the survey module is the imaging part of the CSST, and carrying its dynamics performance research has great theoretical significance and engineering value. First, based on the transfer path analysis theory, the transfer path analysis model of the focal plane assembly is established, and vibration experiments are conducted to investigate the transfer mechanism of micro-vibration within the focal plane assembly. The results of this study can provide substructure dynamic data for the overall dynamic analysis of the CSST, enabling the direct acquisition of focal plane vibration response data in accordance with the input values from vibration sources in subsequent analyses. Secondly, the modal parameters of the focal plane assembly are obtained by using the hammering method to conduct modal analysis experiments on the focal plane components in two states: installed and free. These research results provide data support for determining whether the survey module meets the fundamental frequency requirements of the spacecraft. The results show that the modal parameters of the focal plane assembly meet the engineering requirements, affirming the correctness of the structural design. The research results of this paper also provide a basis for the subsequent structural dynamic optimization of the survey module and CSST.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.