Method and apparatus for controlling an electrically-powered torque machine of a powertrain system

摘要

A method for controlling an electrically-powered torque machine of a powertrain system includes determining a predicted torque command to control the torque machine. A flux command is determined responsive to the predicted torque command. The flux command is a flux level providing a fast torque reserve that is responsive to the predicted torque command. The fast torque reserve is a prescribed minimum rate of change in torque output from the torque machine responsive to the predicted torque command. An inverter controller controls flux of the torque machine responsive to the flux command.

主权项

1. A method for controlling an electrically-powered torque machine of a powertrain system, comprising:
determining a predicted torque command for controlling the torque machine; determining an immediate torque command for controlling the torque machine responsive to an output torque command to the powertrain system; determining a clamped torque command responsive to the immediate torque command, said clamped torque command limited to the maximum achievable torque for the electrically-powered torque machine at a monitored torque machine rotational speed and a monitored high-voltage electrical potential; determining an adaptive predicted torque command based on the predicted torque command and the immediate torque command; determining a flux command responsive to the predicted torque command, including comparing the predicted torque command with the clamped torque command and selecting the maximum of the adaptive predicted torque command and the clamped torque command as a flux torque command and determining the flux command based on the flux torque command, said flux command comprising a flux level providing a fast torque reserve that is responsive to the predicted torque command, the fast torque reserve comprising a prescribed minimum rate of change in torque output from the torque machine responsive to the predicted torque command; and operating an inverter controller to control flux of the torque machine responsive to the flux command.