Method of controlling torque of drive system of electric vehicle
AssigneesHyundai Motor Company, Kia Corporation
InventorJi Won Oh
Life of this patent
Estimating the term…
Abstract
A method of controlling torque of a drive system of an electric vehicle includes determining, by a controller, required torque according to a vehicle driving state while the vehicle is driven, and determining a total torque command based on the determined required torque, and performing, by the controller, a front wheel and rear wheel torque distribution process on the total torque command, so that a front wheel torque command and a rear wheel torque command following the total torque command are determined.
Claims19
A method of controlling torque of a drive system of an electric vehicle, the method comprising:
- determining, by a controller, required torque according to a vehicle driving state while the vehicle is driven, and determining a total torque command based on the determined required torque;
- and
- performing, by the controller, a front wheel and rear wheel torque distribution process on the total torque command, so that a front wheel torque command and a rear wheel torque command following the total torque command are determined,
- wherein, the front wheel torque command is determined as a value less than or equal to a maximum front wheel torque threshold value set as a negative (−) torque value,
- wherein the rear wheel torque command is determined as a value greater than or equal to a minimum rear wheel torque threshold value set as a positive (+) torque value, and
- wherein, in a response that an ON state of a responsiveness priority mode is selected and input by a driver, the controller is configured to perform backlash band evasion control for determining the front wheel torque command as a value less than or equal to the maximum front wheel torque threshold value and determining the rear wheel torque command as a value greater than or equal to the minimum rear wheel torque threshold value.
A drive system of a vehicle, the drive system comprising:
- a sensor configured for detecting vehicle driving information of the vehicle;
- a processor connected to the sensor and configured for:
- determining required torque according to a vehicle driving state while the vehicle is driven, based on the detected vehicle driving information, and determining a total torque command based on the determined required torque;
- and
- performing a front wheel and rear wheel torque distribution process on the total torque command, so that a front wheel torque command and a rear wheel torque command following the total torque command are determined,
- a non-transitory storage medium configured for storing an algorithm for an operation of the processor,
- wherein, the front wheel torque command is determined as a value less than or equal to a maximum front wheel torque threshold value set as a negative (−) torque value,
- wherein the rear wheel torque command is determined as a value greater than or equal to a minimum rear wheel torque threshold value set as a positive (+) torque value, and
- wherein, in a response that an ON state of a responsiveness priority mode is selected and input by a driver, the processor is configured to perform backlash band evasion control for determining the front wheel torque command as a value less than or equal to the maximum front wheel torque threshold value and determining the rear wheel torque command as a value greater than or equal to the minimum rear wheel torque threshold value.
Dependencies are inferred from the claim text.