US 11,964,529 B2
Apparatus and method for controlling vehicle suspension
Jin Hee Lee, Pyeongtaek-si (KR); and Baek Hee Lee, Suwon-si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed on Feb. 3, 2021, as Appl. No. 17/166,832.
Claims priority of application No. 10-2020-0095340 (KR), filed on Jul. 30, 2020.
Prior Publication US 2022/0032711 A1, Feb. 3, 2022
Int. Cl. B60G 17/018 (2006.01); B60G 17/0165 (2006.01); B60G 17/019 (2006.01); B60G 17/08 (2006.01)
CPC B60G 17/0182 (2013.01) [B60G 17/0165 (2013.01); B60G 17/01908 (2013.01); B60G 17/08 (2013.01); B60G 2204/62 (2013.01); B60G 2400/0521 (2013.01); B60G 2400/0522 (2013.01); B60G 2400/102 (2013.01); B60G 2400/204 (2013.01); B60G 2400/821 (2013.01); B60G 2500/104 (2013.01); B60G 2500/11 (2013.01); B60G 2600/16 (2013.01); B60G 2600/182 (2013.01); B60G 2600/1871 (2013.01); B60G 2600/1877 (2013.01); B60G 2600/26 (2013.01); B60G 2600/60 (2013.01); B60G 2600/73 (2013.01); B60G 2800/01 (2013.01); B60G 2800/162 (2013.01); B60G 2800/912 (2013.01); B60G 2800/916 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An apparatus of controlling vehicle suspension, the apparatus comprising:
a variable damper mounted between a vehicle body and a wheel of a vehicle;
first acceleration sensors mounted at each corner of the vehicle body and configured to measure a vehicle body corner vertical acceleration;
second acceleration sensors mounted to each wheel of the vehicle and configured to measure a wheel vertical acceleration; and
a controller engaged to the first acceleration sensors and the second acceleration sensors and configured to estimate a road surface roughness according to the vehicle body corner vertical acceleration and the wheel vertical acceleration, to determine a virtual tire damping required damping force according to the estimated road surface roughness, and to adjust a damping force of the variable damper according to the determined virtual tire damping required damping force.