| 摘要 |
An active human-machine interface system (100) is implemented without a f orce sensor. The system (100) includes a user interface (102) that is config ured to receive user input and, upon receipt thereof, to move to a position. A position sensor (104) is coupled to the user interface (102) and is opera ble to sense user interface position and supply a position signal (112) repr esentative thereof. A motor (106) is coupled to the user interface (102) and to receive motor current. In response to the motor current the motor (106) supplies a feedback force to the user interface (102) at a magnitude proport ional to the motor current. A control circuit (108) is coupled to receive at least the position signal (112) and a signal representative of the motor cu rrent and controls the motor current supplied to the motor (106).
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