To make compatible both the reduction of a variation of a drive force in a brake deceleration start scene, and the suppression of a variation of a drive force in a brake control restart scene during brake deceleration.SOLUTION: A torque control method of an electric vehicle performs vibration suppression control for outputting a motor torque command in which a motor torque amount for canceling a change of a behavior of the vehicle is added to motor torque by which the target drive torque of the vehicle can be obtained with respect to a motor generator 2. When the target drive torque is switched to a negative side from a positive side which is higher than a positive torque determination threshold which is set to the vicinity of zero torque during a brake operation, an operation limit of the motor torque at the vibration suppression control is alleviated until the target drive torque reaches a negative-side negative torque determination threshold. When the target drive torque is switched to the positive side from the negative side which is lower than a negative torque determination threshold during the brake operation, the execution of a motor torque limit for narrowing a motor torque operation limit range at the vibration suppression control is permitted until the target drive torque reaches the positive torque determination threshold.SELECTED DRAWING: Figure 15
【課題】ブレーキ減速開始シーンにおける駆動力変動の低減とブレーキ減速中の制振制御再作動シーンにおける駆動力変動の抑制との両立を図ること。【解決手段】モータ/ジェネレータ2に対して、車両の目標駆動トルクを得るモータトルクに車両挙動変化を打ち消すモータトルク分を付加したモータトルク指令を出力する制振制御を行う電動車両のトルク制御方法である。ブレーキ作動中、目標駆動トルクがゼロトルク付近に設定された正トルク判定閾値より高い正側から負側に切り替わる場合、目標駆動トルクが負側の負トルク判定閾値に達するまでの間は、制振制御におけるモータトルクの動作制限を緩和する。ブレーキ作動中、目標駆動トルクが負トルク判定閾値より低い負側から正側に切り替わる場合、目標駆動トルクが正トルク判定閾値に達するまでの間は、制振制御におけるモータトルク動作制限範囲を狭くするモータトルク制限の実施を許容する。【選択図】図15
TORQUE CONTROL METHOD OF ELECTRIC VEHICLE AND TORQUE CONTROL DEVICE
電動車両のトルク制御方法及びトルク制御装置
2019-10-03
Patent
Elektronische Ressource
Japanisch
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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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