BRAKE CONTROL METHOD AND BRAKE CONTROL DEVICE
First Claim
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.
1 Assignment
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Accused Products
Abstract
A brake control device includes a braking device provided to a wheel, the braking device having a function of applying a brake force to the wheel while adjusting the brake force. The brake control device includes: an acceleration sensor for outputting acceleration data of acceleration acting on the rotating tire in a radial direction of the tire; a contact length calculating unit for calculating contact lengths of the tire based on the acceleration data; a brake sensor for detecting that a brake force is applied and for outputting a detection signal; a judging unit for outputting, to the braking device, a brake information signal for adjusting the brake force according to comparative judgment information which is obtained by comparing the calculated contact lengths; and a brake control unit for outputting a control signal for causing the braking device to adjust a brake force thereof according to the brake information signal.
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Citations
13 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A brake control device, comprising:
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a braking device provided to a wheel equipped with a tire, the braking device having a function of applying a brake force to the wheel to put a brake on the wheel while adjusting the brake force; an acceleration sensor for outputting, in time series, acceleration data of acceleration acting on the tire in a radial direction of the tire due to rotation of tire; a contact length calculating unit, to which the acceleration data is input, for calculating a contact length of the tire based on the acceleration data for every round of rotation of the tire; a brake sensor for detecting that the brake force is applied by the braking device and for outputting a detection signal; a judging unit connected to the brake sensor, for outputting, to the braking device, a brake information signal indicating whether it is necessary or not to adjust the brake force, according to comparative judgment information which is obtained by comparing calculated contact lengths of the tire, in a case where the detection signal is input from the brake sensor; and a brake control unit connected to the judging unit, for outputting a control signal for causing the braking device to adjust the brake force thereof, according to the brake information signal output from the judging unit. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification