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Method and apparatus for controlling the rotation position of an object

  • US 20030225484A1
  • Filed: 12/17/2002
  • Published: 12/04/2003
  • Est. Priority Date: 06/04/2002
  • Status: Active Grant
First Claim
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1. A method of controlling a rotation position of an object, the method comprising:

  • measuring first and second actual control variables which vary as the object rotates;

    determining whether the first actual control variable is smaller than a predetermined amount;

    determining whether a period of time has elapsed in response to determining that the first actual control variable is smaller than the predetermined amount; and

    obtaining a difference between a physical quantity that is generated corresponding to the first actual control variable and the second actual control variable, and determining a control amount to control the object using the obtained difference, in response to determining that the period of time has elapsed or the first actual control variable is larger than the predetermined amount, wherein the predetermined amount corresponds to a position at which the object is rotated to stop the object at a desired position.

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