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:
Jul. 14, 2026
Filed:
Jul. 30, 2024
GM Global Technology Operations Llc, Detroit, MI (US);
Mohammadali Shahriari, Markham, CA;
Kevin A. O'dea, Ann Arbor, MI (US);
Khizar Ahmad Qureshi, Pickering, CA;
Puneet Bagga, Etobicoke, CA;
Dhaval Kavindra Sompura, Canton, MI (US);
Ashraf Abualfellat, Grand Blanc, MI (US);
Dmitriy Feldman, West Bloomfield, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A grade angle estimation system for estimating a grade angle of a roadway that a vehicle is driving along includes one or more controllers. The one or more controllers include one or more processors that execute instructions to receive three-dimensional map data of the roadway and measurements indicating a grade angle of the roadway collected by an inertial measurement unit (IMU). The one or more controllers determine an IMU-based grade angle based on the measurements received by the IMU and compare an absolute value of the IMU-based grade angle with a threshold grade value. In response to determining the absolute value of the IMU-based grade angle is greater than the threshold grade value, the one or more controllers set the grade angle equal to the IMU-based grade angle.