US 12,448,036 B2
Vehicle oscillation control
Wen-Chiao Lin, Rochester Hills, MI (US); Bo Yu, Novi, MI (US); and Raed Nasim Abuaita, Fenton, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Apr. 28, 2023, as Appl. No. 18/308,803.
Prior Publication US 2024/0359734 A1, Oct. 31, 2024
Int. Cl. B62D 1/00 (2006.01); B62D 6/00 (2006.01); B62D 15/00 (2006.01)
CPC B62D 6/008 (2013.01) [B62D 15/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
identifying an oscillation at a steering wheel or steering column of a vehicle;
upon determining that the oscillation exceeds an oscillation of interest threshold, identifying the oscillation as an oscillation of interest;
classifying a cause of the oscillation of interest, wherein the cause of the oscillation of interest comprises a power steering feature, and wherein classifying the power steering feature comprises:
obtaining a first value of the oscillation of interest;
reducing or disabling an assistance of the power steering feature;
obtaining a second value of the oscillation of interest after the assistance of the power steering feature has been reduced or disabled;
assessing a difference between the first value and second value; and
based on the difference between the first value and second value does not exceed a first threshold value classifying the power steering feature as a non-cause of the oscillation;
based on the difference between the first value and second value exceeds the first threshold value and does not exceed a second threshold value, classifying the power steering feature as an intervening cause of the oscillation;
based on the difference between the first value and second value exceeds the first threshold value and the second threshold value, classifying the power steering feature as a primary cause of the oscillation; and
mitigating the oscillation of interest based on the classification of the cause.