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Adaptive vibration control using synchronous demodulation with machine tool controller motor commutation

  • US 20060036351A1
  • Filed: 08/15/2005
  • Published: 02/16/2006
  • Est. Priority Date: 08/13/2004
  • Status: Active Grant
First Claim
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1. A control system for dampening spindle housing vibration induced by an unbalanced rotating spindle, comprising:

  • an angular position sensor for sensing the angular position of the rotating spindle;

    at least one displacement sensor(s) for measuring displacements associated with the spindle housing vibration;

    means for exerting a mechanical dampening force on the spindle housing in the measurement direction(s) of the at least one displacement sensor(s); and

    a controller capable of synchronously demodulating a displacement measurement with respect to an angular position measurement of the spindle to determine the magnitude and location of a maximum unbalance signal, and controlling the mechanical dampening force exerting means based on said magnitude and location of the maximum unbalance signal so as to actively dampen the spindle housing vibration.

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