Method and apparatus for adaptive control of traction drive units in a hybrid vehicle
First Claim
1. A method for adaptively controlling a hybrid electric vehicle including an energy generation system, an energy storage system receiving energy at least from the energy generation system, and at least two traction drive motors receiving energy from the energy storage system, comprising:
- determining if one of the at least two traction drive motors is initially operating nominally;
resetting drive warning and faults, if the one traction drive motor is not initially operating nominally;
determining if the one traction drive motor is operating nominally after resetting the drive warning and faults;
shutting down the one traction drive motor if the one traction drive motor is not operating nominally after resetting the drive warning and faults;
determining if another drive motor is operating nominally, if at least one traction drive motor is operating nominally;
increasing a drive command upper control limit of at least one nominally operating traction drive motor, if the another traction drive motor is not operating nominally; and
shifting torque to at least one nominally operating traction drive motor, if the other traction drive motor is not operating nominally.
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Accused Products
Abstract
A hybrid electric vehicle having an energy generation system, an energy storage system and at least one, and preferable two or more, traction drive units includes a controller for controlling operation of vehicle systems. The controller may adaptively control traction by one or more traction drive units to better propel the vehicle. The controller may, for example, prevent unnecessary wheel slip, allow a traction profile to match a desired profile, and may be used to assist in turning of the vehicle. A method of adaptive control is also provided.
97 Citations
20 Claims
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1. A method for adaptively controlling a hybrid electric vehicle including an energy generation system, an energy storage system receiving energy at least from the energy generation system, and at least two traction drive motors receiving energy from the energy storage system, comprising:
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determining if one of the at least two traction drive motors is initially operating nominally; resetting drive warning and faults, if the one traction drive motor is not initially operating nominally; determining if the one traction drive motor is operating nominally after resetting the drive warning and faults; shutting down the one traction drive motor if the one traction drive motor is not operating nominally after resetting the drive warning and faults; determining if another drive motor is operating nominally, if at least one traction drive motor is operating nominally; increasing a drive command upper control limit of at least one nominally operating traction drive motor, if the another traction drive motor is not operating nominally; and shifting torque to at least one nominally operating traction drive motor, if the other traction drive motor is not operating nominally. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A hybrid electric vehicle, comprising:
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an energy generation system; an energy storage system receiving energy at least from the energy generation system; at least two traction motors receiving energy from the energy storage system; and a vehicle controller that; determines if one of the traction drive motors is initially operating nominally; resets drive warning and faults, if the one traction drive motor is not initially operating nominally; determines if the one traction drive motor is operating nominally after resetting the drive warning and faults; shuts down the one traction drive motor if the one traction drive motor is not operating nominally after resetting the drive warning and faults; determines if another traction drive motor is operating nominally, if the one traction drive motor is operating nominally; increases a drive command upper control limit of at least one nominally operating traction drive motor, if the another traction drive motor is not operating nominally; and shifts torque to at least one nominally operating traction drive motor, if the other traction drive motor is not operating nominally. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification