Acta Optica Sinica, Volume. 38, Issue 11, 1122001(2018)
Frequency Characteristics of Primary Mirror Control System in Segmented Ring Solar Telescope
The digital controller model of the primary mirror control system in an 8 m segmented ring solar telescope (8-m-RST) is established. The relationships between the sampling period, relative stability, integral gain and the control bandwidth are obtained by means of the extraction of the frequency characteristic parameters from the system model. In addition, with the introduction of a pulsed wind disturbance model, the performance of the primary mirror system under the disturbance of a pulsed wind with a low average speed is tested by simulation. The research results show that, the primary mirror control system in the 8-m-RST is stable and its control width meets the requirement of 0.2 Hz. Moreover, it can effectively suppress the disturbance from a wind with an average speed of 2 m·s -1. These results have important references to the structural improvement and the design of the tilt sensor and the controller in the 8-m-RST.
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Tai Guo, Yichun Dai, Dehua Yang, Bin Wang, Zhenyu Jin. Frequency Characteristics of Primary Mirror Control System in Segmented Ring Solar Telescope[J]. Acta Optica Sinica, 2018, 38(11): 1122001
Category: Optical Design and Fabrication
Received: Mar. 6, 2018
Accepted: May. 29, 2018
Published Online: May. 9, 2019
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