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Study on H-Infinity control for LAMOST main axes
Wangping Zhou; Xinqi Xu; Zhiming Dong
2006-07-06
会议录名称Optomechanical Technologies for Astronomy
卷号6273
期号6273
页码Vol.6273 33-1-10
会议日期2006-5-24
会议地点Orlando, FL
会议主办者The International Society for Optical Engineering
出版者SPIE
摘要
The workshop test of mount drive for Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) was completed in June of 2005. Now the giant mount has just been erected on Xinglong station, and is due to test in the summer of 2006. LAMOST mount mechanism features friction drive on both axes, and oil pad is employed specifically for the azimuth. For further improving the tracking accuracy in worse surroundings some nonlinear phenomena in the drive chain have to be addressed. Moreover, external uncertainties on Xinglong site, wind buffeting in particular, could affect load variation on the drive. The control system parameters would change with time, thus eventually degrade the tracking performance. All these reasonable assumptions call for a more robust controller than conventional PID approach to cope with. This is where H Infinity controller comes in. This paper focuses on the mount drive of LAMOST by using H-Infinity technique and comparison with the PID servo. The load disturbance rejection is discussed, as well as transmission rigidity improvement is analyzed. Study and simulation are done in Matlab. The model test in our friction drive lab is presented.
关键词H-infinity Pid Control System Lamost
学科领域郭守敬望远镜(lamost) ; 自动控制
文献类型会议论文
条目标识符http://ir.niaot.ac.cn/handle/114a32/454
专题会议论文
推荐引用方式
GB/T 7714
Wangping Zhou,Xinqi Xu,Zhiming Dong. Study on H-Infinity control for LAMOST main axes[C]:SPIE,2006:Vol.6273 33-1-10.
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