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 Madhur ; Dr. Jayesh Minase
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
卷号：5
期号：4
页码：5287
DOI：10.15680/IJIRSET.2016.0504150
出版社：S&S Publications
摘要：Backlash is a common but intractable problem in CNC machine tools, which may degrade thecontouring accuracy significantly. A lot of work has been done to investigate the backlash error. However, the previousinvestigations about backlash error mainly focus on traditional CNC machine tools with semi-closed loops, i.e. theposition feedback of feed drive is from the encoder of servo- motor. In these traditional machine tools, backlash error isever-present and constant, which equals half width of backlash. To improve the machining accuracy, closed loops (theso-called full- closed loops) have been widely applied instead of the semi-closed loops.The ball screw drives are amongthe most commonly mechanisms used to provide motion inhigh speed machine tools. The most important factor thataffects high speed positioning accuracy is the closed loop bandwidth, which in turn is affected by the structuralvibration modes. In recent years, newer strategies have emerged achieving higher control bandwidth, but requiringhigher order plan models as well as a better understanding of the system dynamics.
关键词：Backlash; Ballscrew; Positioning error; PID controller.