To determine whether a vehicle gets over a step part which is a sporadically existing projection or a recess or the vehicle is traveling on a road surface with continuous irregularities.SOLUTION: A level difference detection method for detecting a step part which is a projection or recess sporadically existing on a road surface on which a vehicle runs, includes: detecting a wheel speed of the vehicle (S1); extracting high frequency components of the wheel speed (S2); calculating a moving average value of the high frequency components (S4); and determining that there is a step part when the difference between an instantaneous value and the moving average value of the high frequency components is equal to or higher than a threshold and not determining that there is a step part when the difference is less than the threshold (S5, S6).SELECTED DRAWING: Figure 8
【課題】単発的に存在する突起又は陥没である段差部を車両が乗り越したのか、凹凸が連続する路面を走行しているのか、を判別する。【解決手段】車両が走行する路面上に単発的に存在する突起又は陥没である段差部を検出する段差検出方法では、車両の車輪速を検出し(S1)、車輪速の高周波成分を抽出し(S2)、高周波成分の移動平均値を演算し(S4)、高周波成分の瞬時値と移動平均値との間の差分が閾値以上の場合は段差部があると判定し、差分が閾値未満の場合は段差部があると判定しない(S5、S6)。【選択図】図8
LEVEL DIFFERENCE DETECTION METHOD, DAMPING FORCE CONTROL METHOD, AND LEVEL DIFFERENCE DETECTION DEVICE
段差検出方法、減衰力制御方法及び段差検出装置
17.06.2024
Patent
Elektronische Ressource
Japanisch
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |
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