Space Two-dimensional Optical Measurement And Control System Control Technology

The photoelectricity measurement system this paper researched is the small star carries the two-dimensional track gimbal which provides the load bearing platform for the payload, and has the two-dimensional directional track function. Thus realizes the extended target omni-directional monitor, the wide range extended target search and the capture, and the goal precise directional locking track has been come ture.Because the two-dimensional track gimbal. embark on the microsatellite, and the quality of the gimbal is as much as the microsatellite's, so the rotation of the gimbal affect the microsatellite grately, for this, it has to have to possess the micro momentum output characteristic, to reduces the interfere of the gimbal movement to the microsatellite as far as possible. In order to achieve the micro momentum output, installs the balance wheel in the direction of the pitch axis and the position axis, one motor driver gimbal rotation, another motor driver balance wheel rotation in opposite to the gimbal direction, in order to eliminates the rotation momentum. Through the experiment,the momentum wheel reduce the gimbal leaving momentum greatly, also provide large numbers of experiment data to the development of the gimbal for the star.In the system design, adopted the position ring and the speed ring doubleclosed loop design. Due to the system's special request and lack of the tachometer, adopt the speed ring based on the pure software, and also obtained the satisfactory effect in the practice. The compound control technology, the predictive filtering technology also obtains the utilization. In the precondition of the system's stabilization, the system 's precision has improved greatly.Refer to the system's characteristic, make the position machine and the lower position machine to one machine, after analyzed the windows98 system structure and the system's core condition, has developed the real-time communication and the control procedure from the first floor, and has successfully applied in the system, this has reacted on the upgrade of operating platform in a way.