A review on precision control methodologies for optical-electric tracking control system

Abstract

Precision control methodologies are necessary to implement high-precision optical-electric tracking performance, and depend on structural configuration, actuator drive, sensors, control algorithm and load platform. However, the optical-electric tracking system is facing with the three key technologies, disturbance rejection, target tracking and distributed intelligent coordination, both foundation platform and moving platform. In this paper, precision control methodologies aiming at the above several key technical problems are summarized, and the research results of some advanced and frontier control technologies are presented and the main ideas of the future key research directions are pointed out. In addition, the research progress and hotspot of disturbance rejection technology from three aspects of precision drive, inertial stability as well as vibration control according to the different mechanism of disturbance influence are introduced, and the integrated technology of vibration and direction based on Stewart platform is an important technical direction of space optical-electric tracking system are emphasized. The composite axis control system is still the most effective fundamental way to improve the target tracking, and the most essential technical problem is to improve the closed-loop performance of the tip-tilt mirror system in precision tracking. It has to be mentioned that observer control is especially suitable for composite axis optical-electric tracking system, especially the observer technology based solely on error, and the development of three or more advanced composite shaft systems has to pay special attention to the application of high performance motors. Eventually, it is proposed that multi-intelligence cooperative optoelectronic system is the key development direction in the field of optical-electric tracking in the future, and it is necessary for the system to develop multi-agent cooperative positioning, formation control and load platform integration and other precise control technologies.