文章基本信息

标题：Position Control of Servo Driven Ball Screw for Minimizing Backlash
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作者：Pallavi Mathur ; Jayesh Minase
期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2016
卷号：4
期号：3
页码：6150
DOI：10.15680/IJIRCCE.2016.0403263
出版社：S&S Publications
摘要：Backlash is a common but intractable problem in CNC machine tools, which may degrade the contouring accuracy signif icantly. A lot of work has been done to investigate the backlash error. However, the previous investigations about backlash error mainly focus on traditional CNC machine tools with semi - closed loops, i.e. the position feedback of feed drive is from the encoder of servo - motor. In these traditional machine tools, backlash error is ever - present and constant, which equals half width of backlash. To improve the machining accuracy, closed loops (the so - called full - closed loops) have been widely applied instead of the semi - closed loops. The ball screw drives are among the most commonly mechanisms used to provide motion inhigh speed machine tools. The most important factor that affects high speed positioning accuracy is the closed loop bandwidth, which in turn is affected by the structural vibration modes. In recent years, newer strategies have emerged achieving higher control bandwidth, but requiring higher order plan models as well as a better understanding of the sy stem dynamics
关键词：Backlash; Ballscrew; Positioning error; PID controller