Design the scanning movement control unit of compton back - scattering imaging scanner , mainly point out the control targets clearly , describe the control principle , etc . discuss the features and technical indexes of this unit 明确指出了该子系统的控制对象,阐述了控制的原理,根据工作要求确定电机及驱动模块的型号。论述了该系统的性能特点与技术指标。