PROBLEM TO BE SOLVED: To provide a vehicle centroid position estimation device capable of estimating a centroid position on a spring with an increased accuracy.SOLUTION: A vehicle centroid position estimation device 10 comprises: a rear shaft suspension load calculation unit 41 for calculating loads F, Fon an air suspension; a rear shaft roll moment calculation unit 42 for calculating a roll moment Mof a rear shaft; a rear shaft roll angle calculation unit 43 for calculating a roll angle φof the rear shaft; an integrated roll rigidity calculation unit 44 for correcting integrated roll rigidity Kbased on a preset provisional value of integrated roll rigidity which is a unique value of the vehicle, the roll moment Mof the rear shaft and the roll angle φ, in a state including before and after adjustment of vehicle height; and a lateral centroid position calculation unit 45 for calculating a lateral centroid position ybased on a load Fon the spring, the roll moment Mof the rear shaft, the roll angle φ, and the integrated roll rigidity K.SELECTED DRAWING: Figure 3

    【課題】バネ上の重心位置をより高精度で推定できる車両の重心位置推定装置を提供すること。【解決手段】車両重心位置推定装置10は、エアサスペンションに対する荷重FL、FRを演算する後軸サスペンション荷重演算部41と、後軸のロールモーメントMxASを演算する後軸ロールモーメント演算部42と、後軸のロール角φ2を演算する後軸ロール角演算部43と、車高調整前後にかけての状態で、車両の固有値である統合ロール剛性の予め設定された暫定値、後軸のロールモーメントMxAS、およびロール角φ2に基づいて、統合ロール剛性Kφ13を補正する統合ロール剛性演算部44と、バネ上荷重Fz、後軸のロールモーメントMxAS、ロール角φ2、および統合ロール剛性Kφ13に基づいて、左右重心位置ycgを演算する左右重心位置演算部45と、を備える。【選択図】図3


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    Title :

    VEHICLE CENTROID POSITION ESTIMATION DEVICE AND CENTROID POSITION ESTIMATION METHOD


    Additional title:

    車両の重心位置推定装置および重心位置推定方法


    Contributors:

    Publication date :

    2017-07-27


    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 / B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge



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