Design and implementation for control system of 53 cm binocular laser ranging telescope

The rapid and steady control system of the 53 cm binocular laser ranging telescope is constructed to realize the tracking and measurement of fast space targets. The modularized control system of the telescope was designed,in which the closed-loops of current and velocity are achieved by the servo driver,and the composite PID algorithm and feedback of position are realized by the motion controller. The control case is integrated and the controller is embedded. The controller is arranged to take charge of the real-time motion control,while the task management and human-computer interaction are realized by the host computer. Additionally,the user-defined communication protocol is formulated to overcome the communication delay and low timing precision of VC++. The control strategies of the 2th position closed-loop and the mixture PID are proposed to improve the tracking precision of the telescope. Experimental results indicate that the telescope can satisfy the precision of 5″ at the uniform speed of 3(°)/s and in the tracking process of low orbit satellites. Meanwhile,it reaches the precision of arc-second scale in the tracking of medium and high orbit satellites. The telescope has been proved that it is able to realize the rapid and steady tracking of space targets which are beyond 400 km far from the ground station,and can satisfy the demand of the property index.