To achieve the required performance of a Micro Machining Center, the control system must issue position commands with nanometer resolution, while holding the axis position with oscillations down to sub-micron level. The requirements call for a highly flexible CNC platform with unconventionally high-bandwidth servo controller. In this paper, we present a system-wide design based on an open CNC architecture with integrated digital servo drives. The proposed design incorporates customization of the digital protocol between CNC and drives, ultra-fine interpolation of the encoder signal, and novel approaches to increase the servo-loop bandwidth. A three-axis Micro Machining Center was successfully built with the proposed design, which was then proven to meet the stringent requirements with extensive dry-run and cutting experiments.
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ASME 2007 International Manufacturing Science and Engineering Conference
October 15–18, 2007
Atlanta, Georgia, USA
Conference Sponsors:
- Manufacturing Division
ISBN:
0-7918-4290-8
PROCEEDINGS PAPER
Design and Implementation of a High Bandwidth Servo Controller for Micro-Machining Center Available to Purchase
Roy Chih-Lung Ko,
Roy Chih-Lung Ko
National Yunlin University of Science and Technology, Taiwan, R.O.C.
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Wang-Lin Liu
Wang-Lin Liu
Precision Machinery Research and Development Center, Taiwan, R.O.C.
Search for other works by this author on:
Roy Chih-Lung Ko
National Yunlin University of Science and Technology, Taiwan, R.O.C.
Wang-Lin Liu
Precision Machinery Research and Development Center, Taiwan, R.O.C.
Paper No:
MSEC2007-31066, pp. 743-750; 8 pages
Published Online:
March 24, 2009
Citation
Ko, RC, & Liu, W. "Design and Implementation of a High Bandwidth Servo Controller for Micro-Machining Center." Proceedings of the ASME 2007 International Manufacturing Science and Engineering Conference. ASME 2007 International Manufacturing Science and Engineering Conference. Atlanta, Georgia, USA. October 15–18, 2007. pp. 743-750. ASME. https://doi.org/10.1115/MSEC2007-31066
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