Journal of the Japan Society for Precision Engineering
Online ISSN : 1882-675X
Print ISSN : 0912-0289
ISSN-L : 0912-0289
Paper
Study on Motion Accuracy Enhancement in NC Machine Tools
—Development of Autonomous Quadrant Glitch Compensator Corresponding to Torque Change—
Takuro HIGUCHIYoshiki MANABERyuta SATOMasaomi TSUTSUMI
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2010 Volume 76 Issue 5 Pages 535-540

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Abstract
In this paper, an autonomous compensator for the quadrant glitch was developed, and its effectiveness is verified through simulation and experiments. The autonomous compensator composes of the newly developed torque following compensator and the friction compensator, which was already developed by our group. The principle of the developed torque following compensator is to correct the difference between an ideal torque and an actual torque with changing of torque due to friction changes. Only the developed compensator was applied to the controller, and simulation and experiment were conducted. As the results, it is found that the height of quadrant glitches only decreases up to about 50 %. However, the developed compensator can effectively correct the fluctuation of the height of quadrant glitches due to friction change and the difference of the heights by the friction force change has considerably become small. Then, the friction compensator was used together with the torque following compensator. Thus, it was confirmed that the quadrant glitches effectively disappeared.
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© 2010 The Japan Society for Precision Engineering
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