Patent ID: 7551997

Claim:
A vehicle behavior control apparatus comprising: a steering angle detection means for detecting a steering angle of a vehicle; a lateral acceleration detection means for detecting a lateral acceleration of the vehicle; a yaw rate detection means for detecting an actual yaw rate of the vehicle; and a control section for controlling a behavior of the vehicle according to output values outputted from the steering angle detection means and the yaw rate detection means, wherein the control section includes: a first turning direction estimating means for estimating a first yaw rate according to the output value of the steering angle detection means and estimating a first turning direction from positive and negative of the first yaw rate when an absolute value of the first yaw rate concerned is not less than a first threshold value; a second turning direction estimating means for estimating a second yaw rate according to an output value of the lateral acceleration detection means and estimating a second turning direction from positive and negative of a difference between the second yaw rate and a second threshold value when the second yaw rate is not less than or not more than the second threshold value; a vehicle turning direction judging means for judging that the direction when the first turning direction and the second turning direction are the same is a turning direction of the vehicle; and an abnormality judging means for judging that the yaw rate detection means is abnormal when the turning direction of the vehicle and the direction of the actual yaw rate are different from each other.