Yaw moment control system in vehicle

Details Yaw moment control system in vehicle Yaw moment control system in vehicle

F - Mech Eng,Light,Heat,Weapons

16

H

F16H 48/20 (2006.01) B60K 17/04 (2006.01) B60K 23/00 (2006.01) B60K 23/04 (2006.01) B60T 8/1755 (2006.01) B62D 6/00 (2006.01) F16H 48/26 (2006.01)

Patent

CA 2220778

A yaw moment control system is provided to eliminate an under-steering tendency generated due to the insufficiency of a cornering force of from driven wheels of a vehicle. More specifically, in place of a longitudinal acceleration Xg and a lateral acceleration Yg used for calculating the amount of torque distributed, a corrected longitudinal acceleration Xg' larger than the value directly proportional to the longitudinal acceleration Xg and a corrected lateral acceleration Yg' larger than the value directly proportional to the lateral acceleration Yg are used, thereby increasing the amount of torque distributed to between inner and outer wheels during turning of the vehicle. A yaw moment is generated which is directed inwards in the turning direction to prevent the under-steering tendency which is generated due to the insufficiency of the cornering force of the front wheels.

Système de contrôle de moment de lacet permettant d'éliminer la tendance au sous-virage découlant de l'insuffisance de la force de virage des roues entraînées d'un véhicule. Dans ce but, plus précisément, au lieu d'utiliser l'accélération longitudinale Xg et l'accélération latérale Yg pour calculer la quantité de moment distribuée, on se sert d'une accélération longitudinale corrigée Xg', plus importante que la valeur directement proportionnelle à l'accélération longitudinale Xg, et une accélération latérale corrigée Yg', également plus importante que la valeur directement proportionnelle à l'accélération latérale Yg, ce qui permet d'augmenter la quantité de moment distribuée entre les roues intérieures et extérieures pendant le virage du véhicule. On crée ainsi un moment de lacet qui est dirigé vers l'avant, dans la direction du virage, pour empêcher la tendance au sous-virage produite par l'insuffisance de la force de virage des roues avant.

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