中国科学院南京天文光学技术研究所机构知识库

The concept for Chinese Future Giant Telescope (CFGT) with 30-m aperture has been around for several years，although the requirements for control system are still far from completed and conclusive at this stage. Since the project was proposed more study on a number of key issues relevant to the control system has been conducted. In particular the

mount control system for the giant telescope has been put forward under exploration.With our ongoing 4-m LAMOST telescope just underwent a successful mount drive test the LAMOST control group has become more knowledgeable with hands on experience that would be quite useful for mount drive design of even large telescope. This paper focuses

on the mount control system design for CFGT telescope in general. Particular aspects such as the effect of large moment of inertia with ultra low-speed and multi-disturbance are included. Friction drive is opted for both historical and economical reasons. Drive stiffness and servo control parameters optimization are discussed based on the workshop test with LAMOST mount that could possibly be mapped to CFGT.