LQG Controller with Wind Gust Disturbance Rejection Property for Cassegrain Antenna
Nowadays in most deep space exploration missions S-and X-band are used, but in order to increase the data rate, Ka-band is also gradually considered, designed and used in practice. The increased frequency band requires the cassegrain antennas to have a more accurate pointing ability, so the current cassegrain antenna servo system must be updated to meet the new requirement. This paper demonstrates the principles of LQG control algorithm, designs LQG controller with wind gust disturbance rejection property by state estimation and optimal feedback control, then applies it to a typical 34-m cassegrain antenna servo system. The simulation results reveal that LQG controller has a good wind gust disturbance rejection property, suppresses the disturbance transfer function significantly, and improves the command transfer function at the same time.
LQG, state estimation, optimal feedback control, PI controller, wind gust disturbance rejection property, cassegrain antenna, servo system
Guolong He Guomin Li Min Liu Ying Huang
Microwave and Antenna Group Beijing Institute of Tracking and Telecommunication Technology Beijing,China
国际会议
上海
英文
1247-1251
2009-11-20（万方平台首次上网日期，不代表论文的发表时间）