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Method and apparatus for continuously suppressing unwanted rotational phenomena in a rotating body

  • US 5,099,430 A
  • Filed: 10/28/1988
  • Issued: 03/24/1992
  • Est. Priority Date: 10/28/1988
  • Status: Expired due to Fees
First Claim
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1. For a body rotating on an axis and having a moment of inertia relative to said axis, a system for dynamically suppressing dynamic imbalance of said body relative to said axis of rotation, comprising:

  • (a) means for selectively varying the magnitude and phase of the moment of inertia of said rotating body relative to said axis of rotation in at least one pair of radial planes on opposite sides of the center of mass of the rotating body while said body is in-place and rotating, said means for varying the moment of inertia being responsive to control signals,(b) means for sensing a condition of imbalance with respect to said axis of rotation, and for communicating pertinent parameters of said sensed imbalance to a control means,(c) the control means comprising;

    (1) means responsive to parameters communicated by the sensing means for selecting trial and imbalance correction variations in the magnitude and phase of the moment of inertia of the rotating body, and(2) means for producing said control signals corresponding to said selected variations in the magnitude and phase of the moment of inertia of said rotating body.

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