To provide a vehicle behavior control device capable of restraining the generation of roll vibration by accurately detecting the roll vibration of a vehicle.
The existence of the generation of the roll vibration in the vehicle is determined by using a roll vibration generation determining expression with a roll angle, a yaw angle, vertical displacement and a lateral force of the vehicle as parameters (S14-18). When it is determined that the roll vibration is generated, an airbag arranged in a tire of the vehicle is operated, and the roll vibration is controlled (S22). The generation of a vibration divergent phenomenon in turning generated by the continuous formation of a 4-degree of freedom of motion in the roll direction, the yaw direction, the lateral direction and the vertical direction of the vehicle can be accurately predicted, and the generation of the roll vibration can be precisely restrained without excessively performing vibration restraining control.
Yoshiki Kuroki
Hikaru Suzuki