Coupled disturbance analysis of a pulse tube cryocooler

Shiqi Li1, Heng Zhang2, Shiping Liu3, Yue Wang4

1, 2, 3School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China

4Beijing Institute of Space Mechanics and Electricity, Beijing, China

2Corresponding author

E-mail: 1sqli@mail.hust.edu.cn, 2zh20061100068@163.com, 3liushiping@mail.hust.edu.cn, 477792088@qq.com

Received 21 September 2017; accepted 28 September 2017

DOI https://doi.org/10.21595/vp.2017.19209

 

Abstract. To predict accurate micro-vibration produced by a spaceborne payload mounted pulse tube cryocooler (PTC), a coupled disturbance analysis of cryocooler with flexible support structures have been discussed and investigated. A coupled transfer function matrix is introduced by improving the traditional disturbance analysis. According to the coupling disturbance relationship between the source and supporting structure, microvibration input load is accurately obtained. Based on the finite element model of the space camera, the performance of optical system is analyzed. Compared to the decoupled method, this coupled method can accurately predict the local transfer characteristics between cryocooler and interface.

Keywords: microvibration, coupled disturbance analysis, space camera.

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Cite this article

Li Shiqi, Zhang Heng, Liu Shiping, Wang Yue Coupled disturbance analysis of a pulse tube cryocooler. Vibroengineering PROCEDIA, Vol. 14, 2017, p. 29‑33.

 

JVE International Ltd. Vibroengineering PROCEDIA. Oct 2017, Vol. 14. ISSN 2345-0533