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Controlling the release of a brush motor which has applied a load

  • US 20060175994A1
  • Filed: 01/26/2005
  • Published: 08/10/2006
  • Est. Priority Date: 01/26/2005
  • Status: Active Grant
First Claim
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1. A method for controlling the release of a brush motor which has applied a load comprising the steps of:

  • a) applying a release current to the brush motor to rotate the brush motor in a direction toward releasing the applied load of the brush motor;

    b) sensing a commutator bar ripple current of the brush motor; and

    c) determining when to remove the release current using at least the sensed commutator bar ripple current.

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