Enhanced braking system and method
First Claim
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1. A method comprising a plurality of activities, comprising:
- for a machine comprising a wheel drive system comprising an electric motor and an electric motor braking system, obtaining information indicative of an inclination of the machine with respect to a travel direction of the machine;
obtaining an estimated weight related to the machine;
based on the information indicative of the inclination of the machine with respect to a travel direction of the machine of the machine and the estimated weight related to the machine, controlling a retard torque of the electric motor to no greater than a dynamic maximum retard torque;
affecting a retard power of the electric motor.
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Abstract
Certain exemplary embodiments can provide for automatic power control and/or torque boost for retarding a machine that considers a machine weight and/or a machine slope. The automatic power control and/or torque boost can provide a control margin under retard. Certain exemplary embodiments can control, or attempt to control, a speed of the machine at less than a maximum safe speed.
65 Citations
25 Claims
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1. A method comprising a plurality of activities, comprising:
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for a machine comprising a wheel drive system comprising an electric motor and an electric motor braking system, obtaining information indicative of an inclination of the machine with respect to a travel direction of the machine; obtaining an estimated weight related to the machine; based on the information indicative of the inclination of the machine with respect to a travel direction of the machine of the machine and the estimated weight related to the machine, controlling a retard torque of the electric motor to no greater than a dynamic maximum retard torque; affecting a retard power of the electric motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A system comprising:
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for a machine comprising a wheel drive system comprising an electric motor and an electric motor braking system, an incline processor adapted to obtain information indicative of an inclination of the machine with respect to a travel direction of the machine; a weight processor adapted to obtain an estimated weight related to the machine; and based on the information indicative of the inclination of the machine with respect to the travel direction of the machine of the machine and the estimated weight related to the machine, a torque controller adapted to control a retard torque of the electric motor to no greater than a dynamic maximum retard torque.
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25. A machine-readable medium comprising stored instructions for:
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for a machine comprising a wheel drive system comprising an electric motor and an electric motor braking system, obtaining information indicative of an inclination of the machine with respect to a travel direction of the machine; obtaining an estimated weight related to the machine; and based on the information indicative of the inclination of the machine with respect to the travel direction of the machine and the estimated weight related to the machine, controlling a retard torque of the electric motor to no greater than a dynamic maximum retard torque.
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Specification