| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tire dynamic radius learning method of a hybrid vehicle which accurately evaluates a tire dynamic radius according to the traveling state of the vehicle, and can improve the control performance of the number of revolutions of a motor. <P>SOLUTION: This method for learning the tire dynamic radius of the hybrid vehicle is characterized by comprising: a step of detecting the number of revolutions of the motor; a step of calculating an estimation value of the number of revolutions of the motor on the basis of a wheel speed and a previous learning value of the tire dynamic radius; a step of calculating a temporary learning value of the tire dynamic radius on the basis of a ratio between an actual measurement value and the estimation value of the number of revolutions of the motor; and a step of calculating a learning value of the tire dynamic radius by adding the previous learning value and the temporary learning value by multiplying them with a prescribed weighting factor. <P>COPYRIGHT: (C)2013,JPO&INPIT |
