Vehicle torque converter modeling and control techniques

A control method for modeling and controlling a torque converter of a vehicle, the control method comprising:

• providing a set of sensors configured to monitor a set of parameters including a vehicle speed, a torque request for a driveline of the vehicle, a state of the torque converter, and a gear ratio of an automatic transmission connected between a turbine of the torque converter and the driveline, wherein the torque converter further includes an impeller fluidly connected to a driven shaft of a torque generating system of the vehicle;
• accessing, by a controller, a look-up table relating (i) various K-factors of the turbine to (ii) various K-factors of the impeller, speed ratios of the torque converter, and torque ratios of the torque converter;
• calculating, by the controller, a K-factor of the turbine based on the set of parameters;
• determining, by the controller, a speed ratio and a torque ratio of the torque converter based on the calculated turbine K-factor using the look-up table;
• determining, by the controller, a target speed and a target torque for the impeller based on the determined speed and torque ratios of the torque converter;
• and
• controlling, by the controller, the torque generating system to achieve the target impeller speed and torque to thereby achieve the torque request at the driveline and mitigate or eliminate noise/vibration/harshness (NVH) corresponding to inconsistent acceleration/feel of the vehicle by a driver.