torque rise cam

A cam-spring mechanism was used in a design of scanner,which dynamic characteristic can be described with a model of harmonic vibration,and the critical frequency for fast returning movement is given.

在采用凸轮扭簧机构驱动的某热像仪扫描器设计方案中,利用简谐振动模型来分析摆镜的回复运动过程,并得出了实现快速回扫所需要的角频率临界值。