Patent ID: 7759894
Filing Date: 2010-07-20
Classification: B64C

Abstract:
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.