Abstract
Xie, C.; Wang, Z.; Wang, R., and Jiang, Z., 2015. Feed forward compensation control of dual-axis photoelectric stabilized platform.The carrier angular motion and disturbance torque are the two main problems limiting stable accuracy of the line of sight (LOS) of airborne optical stabilized platform. Angular rate isolation and torque stiffness analysis of the servo system are proposed to improve the stable accuracy. A PII2 control scheme is taken to obtain fast response, low overshot and zero steady-state error. In order to achieve higher target tracking precision compared with PII2 scheme, a feed forward compensation has been presented against the low tracking accuracy problems caused by pure lag of the system image tracking instruction. Simulation results indicate that the servo system designed has strong capability of isolating angular movement and disturbance torque. Tracking accuracy of the stabilized platform servo control system can be efficiently improved when appropriate feed forward control is introduced.
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