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本文从经济型机床数控的要求出发，吸收开环、半闭环、全闭环数控系统特点，提出一种用步进电机进行慢速切削（进给）传动，交流电机进行快速（空程）传动，位置检测单元直接按装在工作台上，将工作台的位移信息反馈至数控装置的全闭环控制系统，具有开环传动和闭环传动的主要性能，克服了开环和半闭环传动的一些缺点、提高了控制精度和运行速度，与传统闭环或半闭环系统相比，大幅度地降低了造价，是适合我国国情的一种控制模式。
Based on the requirements of economical machine tool numerical control, this paper absorbs the characteristics of open-loop, semi-closed-loop and fully closed-loop CNC system and puts forward a method of slow cutting (feeding) transmission by stepper motor and AC motor for fast Position detection unit directly mounted on the workbench, the workbench displacement information feedback to the numerical control device full closed loop control system, with open-loop drive and closed-loop transmission of the main performance, to overcome the open-loop and semi-closed-loop transmission of some of the shortcomings, Improve the control precision and speed, compared with the traditional closed-loop or semi-closed-loop system, greatly reduce the cost, is a control mode suited to China’s national conditions.