In order to overcome the influence on positioning accuracy caused by the hysterisis error when a tradezoidal screw-nut drive change its direction, this paper takes the positioning problem of orthogonal ma-nipulator as the research object, introduces a positioning control system using S7-200 PLC, which can quick-ly detect screw hysterisis error in a location, overcome hysterisis error by changing the program parameters, and finally achieve the purpose of accurate positioning.%为了克服梯形丝杆螺母传动换向时回程误差对定位精度的影响,对直角型机械手的定位问题进行了研究,提出了一种基于S7-200 PLC的定位控制方法,可以快速检测丝杆某一位置处的回程误差,并通过修改程序参数达到克服回程误差,实现准确定位的目的.
展开▼
