Tire state quantity estimating device, tire state quantity estimation method and tire state quantity estimation program

摘要

Problem to be solved: to estimate the tire ground length accurately.Tire state estimation deviceA road surface that shows the friction coefficient between a tire and a road surface μ AndDetect the self aligning torque generated on the ground plane of the tireFront and rear force FXThe lateral force FY and the wheel load FZ are detected (11).Generation in mobile state using detection results μ (12)Road μ And μ Grip margin ε (13).Front and rear force FX and grip margin ε The physical quantity MF is derived from (14).Self aligned torqueBased on lateral force FY and physical quantity MFThe tire ground length L is estimated (16).Diagram