ACTIVE HUMAN-MACHINE INTERFACE SYSTEM WITHOUT A FORCE SENSOR
First Claim
1. An active human-machine interface system, comprising:
- a user interface configured to receive user input and, upon receipt thereof, to move to a position;
a position sensor coupled to the user interface, the position sensor operable to sense user interface position and supply a position signal representative thereof;
a motor coupled to the user interface, the 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 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 motor.
1 Assignment
0 Petitions
Accused Products
Abstract
An active human-machine interface system is implemented without a force sensor. The system includes a user interface that is configured to receive user input and, upon receipt thereof, to move to a position. A position sensor is coupled to the user interface and is operable to sense user interface position and supply a position signal representative thereof. A motor is coupled to the user interface and to receive motor current. In response to the motor current the motor supplies a feedback force to the user interface at a magnitude proportional to the motor current. A control circuit is coupled to receive at least the position signal and a signal representative of the motor current and controls the motor current supplied to the motor.
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Citations
21 Claims
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1. An active human-machine interface system, comprising:
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a user interface configured to receive user input and, upon receipt thereof, to move to a position; a position sensor coupled to the user interface, the position sensor operable to sense user interface position and supply a position signal representative thereof; a motor coupled to the user interface, the 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 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 motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An active human-machine interface system, comprising:
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a user interface configured to receive user input and, upon receipt thereof, to move to a position; a motor including a rotor and a stator, the rotor coupled to the user interface, the stator coupled to receive motor current, the motor operable, in response to the motor current supplied to the stator, to supply a feedback force to the user interface at a magnitude proportional to the motor current; a user interface position sensor coupled between the user interface and the motor and operable, to sense user interface position and supply a user interface position signal representative thereof; and a control circuit coupled to receive at least (i) the user interface position signal and (ii) a signal representative of the motor current and operable, in response to at least these signals, to control the motor current supplied to the motor stator. - View Dependent Claims (16, 17, 18, 19, 20)
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21. An active human-machine interface system, comprising:
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a user interface configured to receive user input and, upon receipt thereof, to move to a position; a position sensor coupled to the user interface and operable to supply a position signal representative thereof; a controlled device coupled to receive the position signal and operable, in response thereto, to move to a commanded position; a motor coupled to the user interface, the 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 (i) the position signal, (ii) a signal representative of the motor current, and (iii) a sensed parameter associated with the controlled device and operable, in response to at least these signals, to control the motor current supplied to the motor.
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Specification