US 12,344,226 B1Granted

Adaptive feedforward control for controlling input speed of electrified powertrains with a torque converter

AssigneeFca US LLC

InventorsNadirsh D Patel, Abdulquadri Oluwatobi Banuso, Hangxing Sha, Krishna Reddy Madireddy, Indrasen Karogal

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Abstract

An adaptive feedforward control method for an electrified powertrain including a torque converter includes determining a desired input speed for a torque converter based on the set of operating parameters of the electrified powertrain, determining minimum and maximum torques for an impeller of the torque converter based on the set of operating parameters of the electrified powertrain, determining a raw feedforward torque for the torque converter impeller based on the desired input speed for the torque converter and a speed of a turbine of the torque converter, determining a final feedforward torque for the torque converter impeller based on the raw feedforward torque for the torque converter impeller and the minimum and maximum torques for the torque converter impeller, and controlling an electric motor of the electrified powertrain based on the final feedforward torque for the torque converter impeller.

Claims16

Dependent claims

An adaptive feedforward control system for an electrified powertrain including a torque converter, the system comprising:

a set of sensors configured to monitor a set of operating parameters of the electrified powertrain, wherein the electrified powertrain includes an electric motor connected to an impeller of the torque converter and a transmission connected between a turbine of the torque converter and a driveline;
and
a control system configured to:
determine a desired input speed for the torque converter based on the set of operating parameters of the electrified powertrain;
determine minimum and maximum torques for the torque converter impeller based on the set of operating parameters of the electrified powertrain;
determine a raw feedforward torque for the torque converter impeller based on the desired input speed for the torque converter and a speed of the torque converter turbine;
determine a final feedforward torque for the torque converter impeller based on the raw feedforward torque for the torque converter impeller and the minimum and maximum torques for the torque converter impeller;
and
control the electric motor based on the final feedforward torque for the torque converter impeller.

6 more elements

An adaptive feedforward control method for an electrified powertrain including a torque converter, the method comprising:

monitoring, by a control system and using a set of sensors, a set of operating parameters of the electrified powertrain, wherein the electrified powertrain includes an electric motor connected to an impeller of the torque converter and a transmission connected between a turbine of the torque converter and a driveline;
determining, by the control system, a desired input speed for the torque converter based on the set of operating parameters of the electrified powertrain;
determining, by the control system, minimum and maximum torques for the torque converter impeller based on the set of operating parameters of the electrified powertrain;
determining, by the control system, a raw feedforward torque for the torque converter impeller based on the desired input speed for the torque converter and a speed of the torque converter turbine;
determining, by the control system, a final feedforward torque for the torque converter impeller based on the raw feedforward torque for the torque converter impeller and the minimum and maximum torques for the torque converter impeller;
and
controlling, by the control system, the electric motor based on the final feedforward torque for the torque converter impeller.

4 more elements

Dependencies are inferred from the claim text.