US 12,330,626 B2
Hierarchical optimal controller for predictive power split
Kamil Dolinsky, Prague (CZ); and Matej Pcolka, Prague (CZ)
Assigned to Garrett Transportation I Inc., Torrance, CA (US)
Filed by Garrett Transportation I Inc., Torrance, CA (US)
Filed on Oct. 19, 2022, as Appl. No. 17/969,359.
Prior Publication US 2024/0132048 A1, Apr. 25, 2024
Prior Publication US 2024/0227775 A9, Jul. 11, 2024
Int. Cl. B60W 20/12 (2016.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60W 10/10 (2012.01); B60W 20/13 (2016.01); B60W 20/15 (2016.01); B60W 20/30 (2016.01); B60W 40/06 (2012.01); B60W 40/105 (2012.01)
CPC B60W 20/15 (2016.01) [B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 10/10 (2013.01); B60W 20/30 (2013.01); B60W 2510/0657 (2013.01); B60W 2510/083 (2013.01); B60W 2710/0666 (2013.01); B60W 2710/083 (2013.01); B60W 2710/1005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control system for a hybrid vehicle, the hybrid vehicle having a first power source that is a battery having a state of charge and a motor configured to provide a first torque, and a second power source configured to provide a second torque, the control system comprising:
a high-level controller having an associated first memory, the first memory storing one or more readable instruction sets for high-level controller tasks;
a low-level controller having an associated second memory, the second memory storing one or more readable instruction sets for low-level controller tasks;
wherein the high-level controller tasks comprise:
receiving preview information related to a travel path for the hybrid vehicle, and one or more current state variables for the hybrid vehicle;
using a model of the low-level controller, one or more models of system dynamics for the hybrid vehicle, and the one or more current state variables,
calculating a fuel consumption over a prediction horizon including a portion of the travel path, and calculating one or more low-level control variables including an equivalence factor for use by the low-level controller, wherein the equivalence factor is a conversion coefficient between fuel energy and electric energy; and
communicating the one or more low-level control variables including the equivalence factor to the low-level controller;
wherein the low-level controller tasks comprise:
receiving the one or more low-level control variables including the equivalence factor from the high-level controller and one or more current state variables for the hybrid vehicle;
calculating, based on the equivalence factor, the first torque and the second torque to provide fuel consumption within minimum and maximum limits for each of the first torque and second torque; and
issuing control signals to the first and second power sources based on the first torque and the second torque to control a power split between the first and second power sources based on the calculated fuel consumption and thereby minimize fuel consumption of the hybrid vehicle.