US 12,151,664 B2
System and method for assessing health of brake rotors
Milad Jalaliyazdi, Richmond Hill (CA); Graeme R. Garner, York (CA); Hossein Sadjadi, Markham (CA); and Hamed Kazemi, Toronto (CA)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Mar. 19, 2021, as Appl. No. 17/207,117.
Prior Publication US 2022/0297648 A1, Sep. 22, 2022
Int. Cl. B60T 8/32 (2006.01); B60T 8/17 (2006.01); B60T 8/171 (2006.01); B60T 8/58 (2006.01); B60T 8/88 (2006.01); B60T 17/22 (2006.01); B60T 7/04 (2006.01)
CPC B60T 8/326 (2013.01) [B60T 8/17 (2013.01); B60T 8/171 (2013.01); B60T 8/58 (2013.01); B60T 8/885 (2013.01); B60T 17/221 (2013.01); B60T 7/042 (2013.01); B60T 2220/04 (2013.01); B60T 2240/00 (2013.01); B60T 2250/00 (2013.01); B60T 2270/406 (2013.01); B60T 2270/88 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system comprising:
a brake torque request module configured to generate a brake torque request based on a brake pedal position during a braking event;
a brake control module configured to apply friction brakes on a wheelset of a vehicle to satisfy the brake torque request during the braking event, wherein the wheelset includes less than all wheels of the vehicle;
a wheel speed sensor configured to generate a wheel speed signal indicating a speed of the wheel as a function of time; and
a diagnostic module configured to:
convert the wheel speed signal from a time domain to an angle domain, wherein the converted wheel speed signal indicates the speed of the wheel as a function of an angle of the wheel; and
detect a fault in a brake rotor on a wheel in the wheelset based on the wheel speed signal measured during the braking event.