| 摘要 |
In order to accurately and stably estimate the conditions of a running tire, a vehicle is equipped with a sensor-incorporating tire having, at an equal distance from the center in the axial direction of the tire, pressure sensors (11A, 11B) buried in a tread rubber positioned on the outer side in the radial direction of the tire belt layer of a tire tread portion and on the inner sides in the radial direction of tread blocks, the contact length L A of the car body side and the contact length L B of the opposite side of the center in the axial direction of the tire are detected by using the duration times of pressure values from the pressure sensors (11A, 11B) and a wheel speed from a wheel speed sensor (14), and the ratio R = L A /L B of the contact length L A to the contact length L B is computed to estimate lateral force generated by the tire, or the average contact length L AB which is the average value of the contact lengths L A and L B is computed to determine a load applied to the tire. |
