SPEED REGULATION METHOD AND DEVICE
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Accused Products
Abstract
A method for regulating motor vehicle speed by a pedal system having a force resetting device, including a pedal lever with a pedal return spring which can move the pedal lever to its zero position, an electric motor pivotable about a center of rotation which, when energized, can apply a resetting force to the pedal lever in the zero position direction, a motor return spring resets the electric motor in the zero position direction of the electric motor, and a control unit for controlling the electric motor. When the electric motor is de-energized, the pedal return spring, the motor return spring and a hysteresis element generate a passive pedal characteristic curve (PPCC). The PPCC can be changed by energizing the electric motor, and is variable additively at maximum with the available torque of the electric motor and substractively in the region of the spring constant of the motor return spring.
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Citations
18 Claims
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1-9. -9. (canceled)
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10. A method for regulating the speed in a motor vehicle by a pedal system having a force resetting device which is integrated in a housing, comprising:
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converting the driver'"'"'s request to speed with a pedal lever, wherein the pedal lever can be pivoted about a center of rotation (P) from a zero position (PN) of the pedal lever to an end position (PE) of the pedal lever; moving the pedal lever to its zero position (PN) with a pedal return spring; an electric motor, which can be pivoted about a center of rotation (M) from a zero position (MN) of the electric motor to an end position (ME) of the electric motor, and which in the energized state can apply a resetting force F to the pedal lever in the direction of the zero position (PN) thereof, wherein the respective rotational direction from the end position (PE, ME) to the zero position (PN, MN) is identical for the pedal lever and the electric motor; connecting a drive pulley to the electric motor by a shaft which applies the resetting force (F) to the pedal lever by a drive roller which is arranged eccentrically on the drive pulley, wherein, when the resetting force (F) is applied to the pedal lever, the drive roller merely bears on the pedal lever a motor return spring for resetting the electric motor in the direction of the zero position (MN) of the electric motor; and controlling the electric motor with a control unit, wherein the functional relationship between a force which acts on the pedal lever and the angle of the pedal lever between the zero position (PN) and the end position (PE) is described by a pedal characteristic curve (PK1, PK2, PK3, . . . ), wherein when the electric motor is de-energized, the pedal return spring, a hysteresis element on the pedal lever and the motor return spring generate a passive pedal characteristic curve (PK1), and the passive characteristic curve (PK1) can be changed by energizing the electric motor. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification