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Input Shaping for Servo Control of Machine Tools  

Kim, Byung-Sub (Department of Ultra-Precision Machines and Systems, Korea Institute of Machinery & Materials)
Publication Information
Journal of the Korean Society for Precision Engineering / v.28, no.9, 2011 , pp. 1011-1017 More about this Journal
Abstract
Servo control loops are a core part in the control architecture of machine tools. Servo control loops manage acceleration, velocity and position of all the axes in a machine tool based on commands. The performance of servo control loops sets the basis for quality of production paris and cycle time reduction. First, this paper presents a general control architecture of machine tools and several control schemes in literature, which can be applicable to machine tools control; including Zero Phase Error Tracking Control (ZPETC) and Cross Coupling Control (CCC). After that, modem control strategies to mitigate the problem of high speed machining are reviewed. In high speed machining, high accelerations excite the machine structure up to high frequencies, thereby exciting the structure's modes of vibration. These structural vibrations need to be damped if accurate positioning or trajectory following is required. Input shaping is an attractive option in dealing with structural vibrations. The advantages and drawbacks of using input shaping technique for machine tools are discussed in detail.
Keywords
Servo Control; Machine Tools; Tracking Control; Contour Control; Input Shaping;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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