The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2022
Filed:
Mar. 09, 2020
GM Global Technology Operations Llc, Detroit, MI (US);
Stacey M. Marmara, Markham, CA;
Hung H. Nguyen, Toronto, CA;
Nojan Medinei, Toronto, CA;
Turjo Imam, Rochester Hills, MI (US);
Michael L Mandziuk, Clarkston, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for performing a data validity assessment for a brake pad wear estimation includes providing an electric park brake assembly including a motor and a battery management sensor, receiving motor current data from the motor of the electric park brake assembly, receiving battery current data from the battery management sensor, determining a margin of current from the motor current data and the battery current data, receiving historical motor position data and instant motor position data of the motor, calculating the brake pad wear estimation using the motor current data, comparing the historical motor position data and the instant motor position data against an expected range of motor positions, determining an electromagnetic interference level from the margin of current, the historical and instant motor position data, and the calculated brake pad wear estimation, and discarding the motor current data when the electromagnetic interference level is above a predetermined threshold.