| 摘要 |
PROBLEM TO BE SOLVED: To improve the estimation accuracy in a device to estimate the state of a tire by estimating one physical quantity on the tire of a vehicle from another physical quantity. SOLUTION: The resonance frequency F of a tire, the dynamic load radius D of the tire, and theμgradient B at which the friction coefficientμof the tire is changed to the slip ratio of the tire are acquired by using a wheel speed sensor 10, and the pneumatic pressure x, the load y and the degree of wear z of the tire are estimated as the state of the tire based on the acquired resonance frequency F, dynamic load radius D andμgradient B. COPYRIGHT: (C)2004,JPO
|
