초록 ▼

To control both acceleration and deceleration of vehicles having an electric drive with regenerative braking, there is disclosed a control actuator which is biased to a neutral position, and which is controllably moveable between opposed positive and negative control positions relative to the neutra

To control both acceleration and deceleration of vehicles having an electric drive with regenerative braking, there is disclosed a control actuator which is biased to a neutral position, and which is controllably moveable between opposed positive and negative control positions relative to the neutral position to produce a control signal ranging from a value corresponding to zero when in the neutral position to a positive or negative value dependent on the amount of movement from the neutral position. The actuator may comprise a rocking foot pedal which is rotationally biased to the neutral position and which is pivotable against the bias both clockwise and anticlockwise from the neutral position to a desired positive or negative power control position. In one system, the signal produced by the actuator is treated as a power control signal and is conditioned and used to control vehicle power (i.e. energy flow from the vehicle battery to the vehicle's electric drive). In another system, the signal produced by the actuator is treated as a speed changing control signal and is conditioned and used to control vehicle speed. Whatever desired speed is reached by movement of the actuator from its neutral position, the speed is sustained if the actuator is then permitted to return to its neutral position.

대표청구항 ▼

I claim: 1. A power control system for a vehicle having wheels and an electric drive with regenerative braking, said electric drive comprising an electric motor for providing motive power to at least one of said wheels and an electric motor controller for controlling the motor, said system including

I claim: 1. A power control system for a vehicle having wheels and an electric drive with regenerative braking, said electric drive comprising an electric motor for providing motive power to at least one of said wheels and an electric motor controller for controlling the motor, said system including:(a) a motive power control actuator which is biased to a neutral position, and which is controllably moveable between opposed positive and negative power control positions relative to said neutral position for producing a motive power control signal ranging from a value corresponding to zero power when in said neutral position to a variable value dependent on the amount of such movement from said neutral position;(b) a speed sensor for providing a speed signal corresponding to a measured speed of said vehicle; and,(c) a speed holder operably connected to said power control actuator and to said speed sensor for:(i) receiving a signal corresponding to said motive power control signal as a first input signal;(ii) receiving a signal corresponding to said speed signal as a second input signal; and,(iii) producing as an output signal a modified power control signal for said motor controller, the modified signal having a variable value dependent on the difference between said first and second input signals.