【摘要】 概括地综述了圆光栅型光电测速器的结构与工作原理，并介绍了几则应用实例。更多还原

【Abstract】 In this paper ,the device construction and work principle of disc grating type optoelectronic tachometer are introduced briefly,as well as some example of its application in the practical servomechanisms.更多还原