US 12,379,984 B2
Remaining useful life determination for power electronic devices
Hiroshi Ukegawa, South Lyon, MI (US); Raymond P. Viviano, Hazel Park, MI (US); Shailesh N. Joshi, Ann Arbor, MI (US); Qian Yang, Vernon, CT (US); and Krishna Pattipati, Storrs, CT (US)
Assigned to Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US); and University of Connecticut, Storrs, CT (US)
Filed by Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US)
Filed on Mar. 31, 2023, as Appl. No. 18/129,594.
Claims priority of provisional application 63/386,564, filed on Dec. 8, 2022.
Prior Publication US 2024/0193025 A1, Jun. 13, 2024
Int. Cl. G06F 11/00 (2006.01); G06F 11/07 (2006.01); G06N 20/00 (2019.01)
CPC G06F 11/0751 (2013.01) [G06F 11/008 (2013.01); G06F 11/0721 (2013.01); G06N 20/00 (2019.01)] 20 Claims
OG exemplary drawing
 
1. A correlation system for monitoring health of an electronic device, comprising:
one or more processors;
a memory communicably coupled to the one or more processors and storing instructions that, when executed by the one or more processors, cause the one or more processors to:
acquire usage information about operation of the electronic device;
determine whether the usage information indicates a presence of an anomaly in the operation of the electronic device according to an anomaly model;
responsive to detecting the anomaly, determine a remaining useful life (RUL) for the electronic device according to a RUL model that implements a self-organizing map (SOM) and interacting multiple models (IMMs) that are extended Kalman filters, the SOM determines a state of health (SOH) for the usage information and the IMMs predict future values of the SOH at future time points according to the usage information; and
provide the RUL including mitigating failure of the electronic device according to the RUL by adapting operation of the electronic device that is a vehicle to limit one or more of a charging rate, and an advanced driving assistance system (ADAS), including adjusting operating parameters of the electronic device that restrict behaviors of the vehicle.