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Cogless motor driven active user interface haptic feedback system

  • US 7,759,894 B2
  • Filed: 07/10/2007
  • Issued: 07/20/2010
  • Est. Priority Date: 10/26/2006
  • Status: Expired due to Fees
First Claim
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1. An aircraft user interface haptic feedback system, comprising:

  • a user interface configured to receive user input and, upon receipt thereof, to move to a position;

    a position sensor coupled to, and configured to sense the position of, the user interface, the position sensor further configured to supply a user interface position signal representative of the user interface position;

    a cogless motor coupled to the user interface, the cogless motor further coupled to receive motor current and operable, upon receipt thereof, to supply a feedback force to the user interface at a magnitude proportional to the motor current; and

    a control circuit coupled to receive at least the user interface position signal and a signal representative of the motor current and operable, in response to at least these signals, to control the motor current supplied to the cogless motor using a non-trapezoidal motor commutation scheme.

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