Hill hold for an electric vehicle
First Claim
1. A system for controlling dynamic braking of an electric utility vehicle, comprising:
- a brake pedal position sensor that generates a brake position signal corresponding to a position of a brake pedal;
an accelerator position sensor that generates an accelerator signal corresponding to a position of an accelerator pedal; and
a controller that receives the brake position signal and the accelerator signal and transmits a motor control signal to a motor based on the brake position signal and the accelerator pedal signal, and the controller stores a value indicative of an amount of at least one of current, voltage, and power to maintain electric utility vehicle in a stopped state on the hill after the park brake function is disabled or disengaged when the electric utility vehicle achieves a first predetermined speed, and the controller generates the motor control signal in accordance with the stored value when the accelerator signal indicates a command to increase the speed of the electric utility vehicle above a second predetermined speed.
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0 Petitions
Accused Products
Abstract
A method for braking an electric utility vehicle including a motor and an electromechanical brake. The method includes storing a value indicative of at least one of an amount of current, voltage, and power that is commanded to a motor of the electric utility vehicle to maintain the electric utility vehicle in a stopped state; engaging a parking brake function of an electromechanical brake after the storing; disabling the motor after the engaging; commanding the at least one of the current, voltage, and power to the motor at the stored value when an accelerator pedal is depressed; and disengaging the parking brake function after the commanding.
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Citations
7 Claims
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1. A system for controlling dynamic braking of an electric utility vehicle, comprising:
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a brake pedal position sensor that generates a brake position signal corresponding to a position of a brake pedal; an accelerator position sensor that generates an accelerator signal corresponding to a position of an accelerator pedal; and a controller that receives the brake position signal and the accelerator signal and transmits a motor control signal to a motor based on the brake position signal and the accelerator pedal signal, and the controller stores a value indicative of an amount of at least one of current, voltage, and power to maintain electric utility vehicle in a stopped state on the hill after the park brake function is disabled or disengaged when the electric utility vehicle achieves a first predetermined speed, and the controller generates the motor control signal in accordance with the stored value when the accelerator signal indicates a command to increase the speed of the electric utility vehicle above a second predetermined speed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification