Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10673737 | CIRP Annals - Manufacturing Technology | 2005 | 6 Pages |
Abstract
This paper presents the design, implementation and control of a new class of fast tool servos, based on a novel ultrafast motor concept. A prototype ultrafast tool servo with a stroke of 30 |im is described. Experimental results demonstrate that the ultrafast tool servo achieves 23 kHz closed-loop bandwidth, as low as 1.7 nm RMS error, 500 G peak acceleration at 10 kHz open-loop operation, and 2.1 nm (0.04%) error in tracking a 3 kHz sinusoid of 16 |im p-v. A 1 kW linear power amplifier and a 1 MHz sampling rate high-speed real-time computer are designed to drive and control this ultrafast tool servo. A digital controller including loop shaping and adaptive feedforward cancellation is designed to control the tool motion.
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Physical Sciences and Engineering
Engineering
Industrial and Manufacturing Engineering
Authors
X.-D. Lu, D.L. Trumper,