Research On The Method For Dynamic Stabilization Accuracy With Airborne O-E Stabilized System

For the stability test requirements of precision optical tracking system,we presented a testing method of dynamic stability accuracy.The system is driven by a muti-loop controlling unit which supplies signals to track/point target and to stabilize the line-of-sight(LOS),while moving,with high accuracy.In this paper,the working principle of electro-optical stabilized platform with two-axis and four-gimbal is discussed.According to the coordinate rotation relationship of each axis,the motion coupling equations of each frame are established by transmission matrix;the control block diagram of inner and outer gimbals is given;this research provides theoretical guidance for control system design of high-precision airborne pod.Generally the effect of many factors causes a deviation of the result from the ideal,but the stabilization error is a key element of all factors.In order to improve the stability precision of opto-electic platform,it must found the factors which influenced the precision of platform.To appreciate or to renew the system,we apply the cooperation of optics-mechanics-electronics-computer to construct a professional test instrument.The core of this instrument is the miss distance correction algorithm.Ultimately,we get an accrate result by dint of the instrument.The result shows that the stabilization accuracy reaches 0.06mrad.Simultaneously,this instrument can be applied in the other similar systems.