Vehicle behavior control device

A vehicle behavior control device for controlling a behavior of a vehicle equipped with a steering apparatus configured to transmit a rotation of a steering wheel to front road wheels to thereby steer the front road wheels, comprising:

• a steering speed acquisition section operable to acquire a steering speed in the steering apparatus;
• and
• a driving force reduction section operable, when the steering speed becomes equal to or greater than a given threshold which is greater than 0, to reduce a driving force for the vehicle according to the steering speed,
• wherein the steering apparatus comprises a steering shaft coupled to the steering wheel and rotatable together with the steering wheel;
• a torsion bar composing a portion of the steering shaft, torsional rigidity of the torsion bar about a rotational axis of the steering shaft being less than a remaining portion of the steering shaft;
• a torque sensor for detecting a steering torque acting on the steering shaft, which is installed in the vicinity of the torsion bar;
• and an electric motor for applying an assist torque to the steering apparatus according to the steering torque detected by the torque sensor, at the position on the side of the front road wheels with respect to the torsion bar,
• wherein the steering speed acquisition section is configured to acquire the steering speed based on a rotational angle of the motor,
• and wherein the driving force reduction section is operable to reduce the vehicle driving force according to the steering speed, such that a deceleration of the vehicle caused by the reduction in the vehicle driving force becomes 0.05 G or less.