Hill Hold For An Electric Vehicle
First Claim
1. A method for braking an electric utility vehicle including a motor and an electromechanical brake, comprising:
- 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.
2 Assignments
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.
114 Citations
19 Claims
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1. A method for braking an electric utility vehicle including a motor and an electromechanical brake, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. 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 10 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 (8, 9, 10, 11, 12, 13)
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14. An electric utility vehicle, comprising:
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an electromechanical brake that functions as a parking brake based on a speed of the electric utility vehicle; a motor that drives the electric utility vehicle; and a controller that controls the motor and the electromechanical brake, that stores a value indicative of an amount of a current provided to the motor before engaging the parking brake function of the electromechanical brake, and that supplies current to the motor at the stored value before the electromechanical brake is disengaged. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification