Patent ID: 7937204
Filing Date: 2011-05-03
Classification: B60T

Abstract:
1. A brake control method for a braking device having a function of applying a brake force to a wheel equipped with a tire to put a brake on the wheel while adjusting the brake force, the brake control method comprising the steps of: acquiring, in time series, acceleration data of acceleration acting on the tire in a radial direction of the tire, due to rotation of the tire; calculating a contact lengths of the tire based on the acceleration data for every round of rotation of the tire; and controlling the brake force, according to comparative judgment information obtained by comparing a plurality of contact lengths of the tire thus calculated, with one another, wherein, the brake force is controlled when one of conditions 1 to 3 is met, in which the condition 1 is that assuming that a contact length in a state where the brake force is not applied or in a state immediately after an application of the brake force is set as a reference contact length, a contact length calculated after an application of the brake force is longer than a length determined by multiplying the reference contact length by a predetermined value, the condition 2 is that, assuming that a contact length at a preceding time is set to L the condition 3 is that assuming that a contact length calculated for every round of rotation of the tire after an application of the brake force is set to L