PROBLEM TO BE SOLVED: To accurately estimate the gradient of a road a vehicle travels on.SOLUTION: An estimation apparatus includes: a vehicular speed sensor 21 for detecting a speed of a vehicle 1; an acceleration sensor 24 for detecting acceleration in forward and reverse directions of the vehicle 1; an acceleration calculation part 511 for calculating acceleration in forward and reverse directions on the basis of the vehicular speed detected by the vehicular speed sensor 21; a low-pass filter 512 for applying, and output, filtering processing to respectively the acceleration detected by the acceleration sensor 24 and the acceleration calculated by the acceleration calculation part 511 for eliminating noise components; a road gradient estimation part 513 for estimating a gradient of a road on which the vehicle 1 is traveling on the basis of the output value of the low-pass filter 512; and a filter characteristic change part 514 for changing a characteristic of the filtering processing on the basis of the acceleration detected by the acceleration sensor 24 or of the acceleration calculated by the acceleration calculation part 511.SELECTED DRAWING: Figure 3

    【課題】車両が走行する路面の勾配を精度良く推定する。【解決手段】車両1の車速を検出する車速センサ21と、車両1の前後方向の加速度を検出する加速度センサ24と、車速センサ21により検出される車速に基づいて、前後方向の加速度を算出する加速度算出部511と、加速度センサ24により検出された加速度及び加速度算出部511により算出された加速度のそれぞれに対して、ノイズ成分を除去するためのフィルタ処理を施して出力するローパスフィルタ512と、ローパスフィルタ512の出力値に基づいて、車両1が走行する路面の勾配を推定する路面勾配推定部513と、加速度センサ24により検出された加速度又は加速度算出部511により算出された加速度に基づいて、フィルタ処理の特性を変更するフィルタ特性変更部514とを備える。【選択図】図3


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    Title :

    ROAD GRADIENT ESTIMATION APPARATUS


    Additional title:

    路面勾配推定装置


    Contributors:

    Publication date :

    2016-12-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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