China SONG telescope would achieve the goal for long time continuous, uninterrupted, full automatic observation and works
in the diffraction limit condition with high tracking precision and reliability, which puts forward a serious challenge to the
tracking control system. This paper explores one sliding mode control algorithm to improve the performance of China SONG
telescope tracking system. The results show that the algorithm can get higher precision, which has high exploration
significance for the telescope tracking system.
The modern large telescope is endowed with advanced imaging systems and active optics, resulting in very high
peak angular resolution. The drive systems for the telescope must consequently be able to guarantee a tracking accuracy
better than the telescope angular resolution, in spite of unbalanced and sudden loads such as wind gusts and in spite of a
structure that, because of its size, can not be infinitely stiff, which puts forward a great challenge to the telescope' drive
system. Modern telescope's drive system is complicated, which performance and reliability directly affect the telescope
tracking performance and reliability. Redundant technology is one of the effective ways to improve the security of the
system. This paper will introduce one redundant synchronous control method for direct drive torque motor of large
diameter telescope drive system, which can effectively improve the telescope drive system tracking precision and
improve the reliability, stability and anti-jamming ability.
Direct drive technology is the key to solute future 30-m and larger telescope motion system to guarantee a very high
tracking accuracy, in spite of unbalanced and sudden loads such as wind gusts and in spite of a structure that, because of
its size, can not be infinitely stiff. However, this requires the design and realization of unusually large torque motor that
the torque slew rate must be extremely steep too. A conventional torque motor design appears inadequate. This paper
explores one redundant unit permanent magnet synchronous motor and its simulation bed for 30-m class telescope.
Because its drive system is one high integrated electromechanical system, one complexly electromechanical design
method is adopted to improve the efficiency, reliability and quality of the system during the design and manufacture
circle. This paper discusses the design and control of the precise tracking simulation bed in detail.