System and method for regenerative braking torque scheduling
AssigneeCummins Inc.
InventorsMartin T. Books, Joseph E. Paquette
Life of this patent
Estimating the term…
Abstract
A method is provided for scheduling regenerative braking torque, including: sensing a position of an accelerator pedal; generating a torque request value in response to the sensed accelerator pedal position; determining a speed of operation of a motor/generator; determining a torque limit in response to the torque request value and the determined speed of the motor/generator; generating a regenerative braking command in response to the torque limit; and outputting the regenerative braking command to the motor/generator.
Claims17
A method for scheduling regenerative braking torque, comprising:
- sensing a position of an accelerator pedal;
- generating a torque request value in response to the sensed accelerator pedal position;
- determining a speed of operation of a motor/generator;
- determining a torque limit in response to the torque request value and the determined speed of operation of the motor/generator;
- generating a regenerative braking command in response to the torque limit;
- outputting the regenerative braking command to the motor/generator;
- and modifying the torque limit in response to a state of a brake pedal,
- wherein the torque limit is a negative torque limit, and
- wherein the modifying comprises decreasing the negative torque limit in response to the brake pedal having a depressed state.
A system for scheduling regenerative braking torque, comprising:
- a pedal sensor configured to output a position signal indicating a position of an accelerator pedal;
- a torque request device coupled to the pedal sensor and operable to generate a torque request value in response to the position signal;
- a speed sensor configured to output a speed signal indicating a speed of operation of a motor/generator;
- and
- a controller coupled to the speed sensor and the torque request device, the controller being configured to determine a torque limit in response to the torque request value and the speed signal, generate a regenerative braking command in response to the torque limit, and output the regenerative braking command to the motor/generator,
- wherein the system is configured to modify the torque limit in response to a state of a brake pedal, and
- wherein the system is further configured to decrease the torque limit in response to the state being a depressed state.
A method for scheduling regenerative braking torque, comprising:
- sensing a position of an accelerator pedal;
- generating a torque request value in response to the sensed accelerator pedal position;
- determining a speed of operation of a motor/generator;
- determining a torque limit in response to the torque request value and the determined speed of operation of the motor/generator;
- generating a regenerative braking command in response to the torque limit;
- outputting the regenerative braking command to the motor/generator;
- and
- modifying the torque limit in response to a state of a brake pedal,
- wherein the torque limit is a negative torque limit, and
- wherein the modifying comprises increasing the negative torque limit in response to the brake pedal having a released state.
Dependencies are inferred from the claim text.