| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for measuring the wear condition of a tire tread part with excellent accuracy from the vehicle body side, and its device. <P>SOLUTION: The longitudinal acceleration of a vehicular unsprung part is detected by mounting an acceleration sensor 11 on a knuckle which is the vehicular unsprung part. The frequency band for analysis is set based on the wheel speed detected by using a wheel speed sensor 12. The band value as the frequency component of the longitudinal acceleration in a tire unsprung part in the frequency band is calculated, and the tire wear is estimated from the calculated band value. <P>COPYRIGHT: (C)2008,JPO&INPIT |
