Patent ID: 6802226
Filing Date: 2004-10-12
Classification: B60T,B62D,G01N

Abstract:
A physical amount estimating apparatus comprising:first outputting means for outputting a first physical amount that does not include a hysteresis characteristic; second outputting means for outputting a second physical amount that has a predetermined physical relationship to the first physical amount and includes a hysteresis characteristic; hysteresis removing means for calculating a corrected value with the hysteresis characteristic removed therefrom, based on the second physical amount; and estimating means for estimating a third physical amount based on a physical relationship between the first physical amount and the corrected value, wherein: the first physical amount is a physical amount related to a steering state of a steered wheel; the second physical amount is an estimated value of a self aligning torque estimated from a steering torque and an assist torque; the corrected value is a corrected value of the self aligning torque calculated from the estimated value of the self aligning torque; and the third physical amount is a physical amount related to one of a wheel state and a road state while a vehicle is driven.