To suppress resonance caused by vibration in a drive system while suppressing power performance from being undermined.SOLUTION: In a case where a front-side compelling force frequency Ff falls within a range of a threshold Ffres being a front-side resonance determination zone, a front-rear torque distribution ratio is changed so as to increase rear-wheel drive torque Tr as well as decrease front-wheel drive torque Tf, while in a case where a rear-side compelling force frequency Fr falls within a range of a threshold Frres being a rear-side resonance determination zone, a front-rear torque distribution ratio is changed so as to increase the front-wheel drive torque Tf as well as decrease the rear-wheel drive torque Tr. That is, in either case, the front-wheel drive torque Tf and the rear-wheel drive torque Tr are increased or decreased at a same change amount so that total drive torque Ttotal of a whole vehicle does not change, making it possible to suppress resonance generated due to vibration in the front-rear wheel drive systems while preventing power performance from being deteriorated.SELECTED DRAWING: Figure 2
【課題】動力性能が損なわれることを抑制しつつ駆動系の振動に起因する共振を抑制する。【解決手段】前側強制力周波数Ff が前側共振判定領域である閾値Ffresの範囲内に含まれる場合は、前輪駆動トルクTf が低下するとともに後輪駆動トルクTr が増大するように前後のトルク配分比が変更され、後側強制力周波数Fr が後側共振判定領域である閾値Frresの範囲内に含まれる場合は、後輪駆動トルクTr が低下するとともに前輪駆動トルクTf が増大するように前後のトルク配分比が変更される。すなわち、何れの場合も車両全体の総駆動トルクTtotal が変化しないように、前輪駆動トルクTf および後輪駆動トルクTr が同じ変化量だけ増加または減少させられ、動力性能が損なわれることを防止しつつ前後輪の駆動系の振動に起因して発生する共振を抑制することができる。【選択図】図2
VEHICULAR DRIVE FORCE CONTROL APPARATUS
車両の駆動力制御装置
26.03.2024
Patent
Elektronische Ressource
Japanisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |