To enable accurate control of a vehicle on the basis of an estimated value of vehicle body acceleration by optimally correcting the estimated value of the vehicle body acceleration calculated through time differentiation of a wheel speed detection value by a wheel speed sensor.SOLUTION: Whether a derivative value (δθr/δA) obtained by differentiating a road surface inclination angle θr calculated by calculation means by an estimated vehicle body acceleration value A is equal to or less than a preset threshold value Th is determined by correction means 22. When the derivative value (δθr/δA) is greater than the threshold value Th, a correction is made by the correction means 22. In the correction, the estimated vehicle body acceleration value A is multiplied by a correction factor specified in advance and a multiplication of the correction factor is repeated until the derivative value (δθr/δA) obtained by differentiating the road surface inclination angle θr by the estimated vehicle body acceleration value A after correction becomes equal to or less than the threshold value Th.SELECTED DRAWING: Figure 5
【課題】車輪速センサによる車輪速検出値を時間微分して算出される車体加速度推定値を最適補正することにより、車体加速度推定値に基づく車両の制御を精度よく行えるようにする。【解決手段】演算手段により算出される路面傾斜角θrを車体加速度推定値Aにより微分した微分値(∂θr/∂A)が、予め設定された閾値Th以下かどうかが補正手段22により判断され、微分値(∂θr/∂A)が閾値Thより大きい場合には、補正手段22により、車体加速度推定値Aに予め規定された補正係数が掛け算され、路面傾斜角θrを補正後の車体加速度推定値Aで微分した微分値(∂θr/∂A)が閾値Th以下になるまで、補正係数の掛け算を繰り返す補正が行われる。【選択図】図5
ACCELERATION CORRECTION DEVICE
加速度補正装置
2023-10-20
Patent
Electronic Resource
Japanese
IPC: | G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein |
European Patent Office | 2017
|ACCELERATION CORRECTION DEVICE, ACCELERATION CORRECTION PROGRAM, AND TIRE STATE DETECTION DEVICE
European Patent Office | 2017
|European Patent Office | 2022
|European Patent Office | 2019
|