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Proceedings Paper • Open Access

Ground simulation of wide frequency band angular vibration for Lander's optic sensors
Author(s): Zhigang Xing; Jianwei Xiang; Gangtie Zheng

Paper Abstract

To guide a lander of Moon or Mars exploration spacecraft during the stage of descent onto a desired place, optic sensors have been chosen to take the task, which include optic cameras and laser distance meters. However, such optic sensors are sensitive to vibrations, especially angular vibrations, from the lander. To reduce the risk of abnormal function and ensure the performance of optic sensors, ground simulations are necessary. More importantly, the simulations can be used as a method for examining the sensor performance and finding possible improvement on the sensor design. In the present paper, we proposed an angular vibration simulation method during the landing. This simulation method has been realized into product and applied to optic sensor tests for the moon lander. This simulator can generate random angular vibration in a frequency range from 0 to 2000Hz, the control precision is ±1dB, and the linear translational speed can be set to the required descent speed. The operation and data processing methods of this developed simulator are the same as a normal shake table. The analysis and design methods are studied in the present paper, and test results are also provided.

Paper Details

Date Published: 20 November 2017
PDF: 6 pages
Proc. SPIE 10564, International Conference on Space Optics — ICSO 2012, 1056401 (20 November 2017); doi: 10.1117/12.2309223
Show Author Affiliations
Zhigang Xing, Tsinghua Univ. (China)
Jianwei Xiang, Tsinghua Univ. (China)
Gangtie Zheng, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 10564:
International Conference on Space Optics — ICSO 2012
Bruno Cugny; Errico Armandillo; Nikos Karafolas, Editor(s)

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