US 12,447,947 B2
Road condition detection using suspension sensors
Joel A. Fernandez Cruz, Ferndale, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Mar. 14, 2024, as Appl. No. 18/604,950.
Prior Publication US 2025/0289411 A1, Sep. 18, 2025
Int. Cl. B60W 30/02 (2012.01); B60W 10/04 (2006.01); B60W 10/18 (2012.01); B60W 10/22 (2006.01)
CPC B60W 30/025 (2013.01) [B60W 10/04 (2013.01); B60W 10/18 (2013.01); B60W 10/22 (2013.01); B60W 2520/00 (2013.01); B60W 2552/35 (2020.02)] 20 Claims
OG exemplary drawing
 
1. A method for controlling at least one of a traction control system, antilock braking system (ABS) and actively controlled suspension comprising:
receiving an sensor output from at least one suspension sensor at a controller, the sensor output being indicative of a vertical height of the actively controlled suspension relative to a road;
determining an amplitude of vertical motion of the actively controlled suspension over time using the received sensor output;
identifying peaks and valleys in the amplitude of vertical motion of the actively controlled suspension over time;
determining that a rough road condition is present in response to a number of peaks and valleys exceeding a predefined threshold amplitude occurring more often than a predefined threshold frequency; and
adapting an active suspension control of at least one wheel system of a vehicle in response to determining that a rough road condition is present.