Patent ID: 11964567
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A propulsion control system comprising:
an electric motor configured to generate an axle torque in response to a final torque command, wherein the axle torque is transferrable to a drive wheel, and the electric motor has a motor constraint that specifies a maximum torque for proper operation of the electric motor;
a motor controller coupled to the electric motor, and configured to generate the final torque command in response to an intermediate torque command and a distributed power limit command; and
a supervisory controller coupled to the motor controller, wherein the supervisory controller has an open-loop control function configured to:
calculate an initial torque command vector in response to a driver torque command;
calculate an intended operating vector in a multidimensional power space by a polynomial mapping of the initial torque command vector into the multidimensional power space;
generate the intermediate torque command by clipping the intended operating vector in response to the motor constraint;
generate a constrained command vector by clipping the intended operating vector in response to the motor constraint and a plurality of energy storage constraints; and
generate the distributed power limit command in response to the constrained command vector.