Vehicle gradient estimating device and vehicle traveling control device
First Claim
1. A vehicle gradient estimating device comprising:
- a vehicle speed sensor which detects a traveling speed of a subject vehicle;
an acceleration calculating unit which calculates an acceleration of the subject vehicle on the basis of the traveling speed;
an engine load deceleration calculating unit which calculates a deceleration due to an engine load of the subject vehicle;
an acceleration correcting unit which corrects the acceleration by using the deceleration;
a brake fluid pressure detecting unit which detects a brake fluid pressure of the subject vehicle; and
a first gradient estimating unit which estimates a gradient of a road being travelled of the subject vehicle,wherein the first gradient estimating unit estimates the gradient on the basis of a ratio between the brake fluid pressure and the acceleration corrected by the acceleration correcting unit.
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Abstract
A vehicle gradient estimating device includes: a vehicle speed sensor which detects a traveling speed of a subject vehicle; an acceleration calculating unit which calculates an acceleration of the subject vehicle on the basis of the traveling speed; an engine load deceleration calculating unit which calculates a deceleration due to an engine load of the subject vehicle; an acceleration correcting unit which corrects the acceleration by using the deceleration; a brake fluid pressure detecting unit which detects a brake fluid pressure of the subject vehicle; and a first gradient estimating unit which estimates a gradient of a road being traveled of the subject vehicle, wherein the first gradient estimating unit estimates the gradient on the basis of a ratio between the brake fluid pressure and the acceleration corrected by the acceleration correcting unit.
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Citations
12 Claims
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1. A vehicle gradient estimating device comprising:
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a vehicle speed sensor which detects a traveling speed of a subject vehicle; an acceleration calculating unit which calculates an acceleration of the subject vehicle on the basis of the traveling speed; an engine load deceleration calculating unit which calculates a deceleration due to an engine load of the subject vehicle; an acceleration correcting unit which corrects the acceleration by using the deceleration; a brake fluid pressure detecting unit which detects a brake fluid pressure of the subject vehicle; and a first gradient estimating unit which estimates a gradient of a road being travelled of the subject vehicle, wherein the first gradient estimating unit estimates the gradient on the basis of a ratio between the brake fluid pressure and the acceleration corrected by the acceleration correcting unit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle gradient estimating method, comprising the steps of:
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detecting a traveling speed of a subject vehicle; calculating an acceleration of the subject vehicle on the basis of the traveling speed; calculating a deceleration due to an engine load of the subject vehicle; correcting the acceleration by using the deceleration to obtain a corrected acceleration; detecting a brake fluid pressure of the subject vehicle; and estimating a first gradient of a road being travelled of the subject vehicle on the basis of a ratio between the brake fluid pressure and the corrected acceleration. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification