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	Control system for multi-motor friction drive of large-scale optical telescope
	Mao Yao; Ma Jia-Guang; Bao Qi-Liang; Yang Song-Hua
	2009
会议名称	Proceedings of SPIE
会议日期	2009
卷号	7281
通讯作者	Mao Yao
中文摘要	In terms of large-scale optical telescope, the design of multi-motor friction drive is obviously advantageous than that of single motor direct drive on the expense for manufacture of motors. However, to keep the high accuracy of tracking of multi-motor friction drive in certain velocity and acceleration, synchronized control for multi-motor and compensation to the mechanical resonance are needed. After designing appropriate multi-motor drive and synchronized compensation device, we overcame the interference among running motors, restricted the velocity difference in smooth running to a smaller range, and set a good foundation for the design of correcting parameter. Besides, to expand the closed loop bandwidth of the system, the control loop model has been identified, and the compensator based on the identified model effectively improved the influence of the mechanical resonance. The experimental results showed that for multi-motor friction drive of the 1.2-m large-scale Alt-Azimuth optical telescope, the proposed approach obtained high accuracy when running at the max velocity of 3 deg/s.
英文摘要	In terms of large-scale optical telescope, the design of multi-motor friction drive is obviously advantageous than that of single motor direct drive on the expense for manufacture of motors. However, to keep the high accuracy of tracking of multi-motor friction drive in certain velocity and acceleration, synchronized control for multi-motor and compensation to the mechanical resonance are needed. After designing appropriate multi-motor drive and synchronized compensation device, we overcame the interference among running motors, restricted the velocity difference in smooth running to a smaller range, and set a good foundation for the design of correcting parameter. Besides, to expand the closed loop bandwidth of the system, the control loop model has been identified, and the compensator based on the identified model effectively improved the influence of the mechanical resonance. The experimental results showed that for multi-motor friction drive of the 1.2-m large-scale Alt-Azimuth optical telescope, the proposed approach obtained high accuracy when running at the max velocity of 3 deg/s.
收录类别	EI
语种	英语
内容类型	会议论文
源URL	[http://ir.ioe.ac.cn/handle/181551/7680]
专题	光电技术研究所_光电探测与信号处理研究室（五室）
作者单位	中国科学院光电技术研究所
推荐引用方式 GB/T 7714	Mao Yao,Ma Jia-Guang,Bao Qi-Liang,et al. Control system for multi-motor friction drive of large-scale optical telescope[C]. 见:Proceedings of SPIE. 2009.

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