The micro-displacement worktable control system of mirror detection

Yu Ye; Zhenchao Zhang; Aihua Li

doi:10.1117/12.786531

18 July 2008 The micro-displacement worktable control system of mirror detection

Yu Ye, Zhenchao Zhang, Aihua Li

Proceedings Volume 7019, Advanced Software and Control for Astronomy II; 701929 (2008) https://doi.org/10.1117/12.786531
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

This paper mainly introduces hardware design and control method of the system which is used for detecting the M_A segmented mirrors in the LAMOST. According to the demand of sub-aperture stitching interferometer, the system adopts a control card to control the stepping motor to drive the worktable moving on the X-Y. The M_A sub-mirror surface will be changed through active optical correction and add-subtract power of force actuators. The detection result of the M_A segmented mirror of 14 shows that root mean square (RMS) of surface accuracy error is 21.387nm less than 0.035 λ(λ=632.8nm). It is demonstrated that the control system can work very well and shorten the time of detection.

Citation Download Citation

Yu Ye, Zhenchao Zhang, and Aihua Li "The micro-displacement worktable control system of mirror detection", Proc. SPIE 7019, Advanced Software and Control for Astronomy II, 701929 (18 July 2008); https://doi.org/10.1117/12.786531

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