The technique of camera scan control based on current loop control

As the crucial structure of aerial camera, sca reflector is always requested with high performance of control precision, stable running and rapid responding. The paper introduces a kind of method about current loop control system which is based on position and velocity dual-closed loop control system. This method improves effectively the performance of velocity closed loop control system and amplifies the gain of low frequency. The results show applying these control methods, the influence of the torque ripple has decrease 50% and the compensation rate precsion has promoted double.