Vehicle behavior control device

A vehicle behavior control device configured to control a behavior of a vehicle having steerable front road wheels, the vehicle behavior control device comprising:

• a steering apparatus configured to transmit rotation of a steering wheel toward the front road wheels, the steering apparatus having:
• a steering wheel-side mechanism which is coupled to the steering wheel and configured to transmit rotation of the steering wheel;
• and a road wheel-side mechanism which is coupled to the steering wheel-side mechanism via a low rigidity portion having a relatively low torsional rigidity or is mechanically separated from the steering wheel-side mechanism, and configured to turn the front road wheels according to the rotation of the steering wheel;
• and
• a processor configured to perform a driving force reduction control in order to reduce a vehicle driving force,
• wherein the steering apparatus comprises:
• a first steering angle sensor provided in the steering wheel-side mechanism and configured to detect a steering angle corresponding to rotation of the steering wheel;
• and a second steering angle sensor provided in the road wheel-side mechanism and configured to detect a steering angle corresponding to turning of the front road wheels,
• wherein, when a yaw rate of the vehicle or a steering speed of the steering wheel is equal to or greater than a given value, the processor is configured, when a steering speed corresponding to the steering angle detected by the first steering angle sensor becomes greater than a given threshold greater than 0, to perform the driving force reduction control in order to reduce the vehicle driving force based on the steering speed corresponding to the steering angle detected by the first steering angle sensor, and
• wherein, when a yaw rate of the vehicle or the steering speed of the steering wheel is less than the given value, the processor is configured, when a steering speed corresponding to the steering angle detected by the second steering angle sensor becomes greater than the given threshold, to perform the driving force reduction control in order to reduce the vehicle driving force based on the steering speed corresponding to the steering angle detected by the second steering angle sensor.