PROBLEM TO BE SOLVED: To provide an electric vehicle slip control device capable of performing correct traction control even during start-up of a vehicle and in a low-speed area.SOLUTION: A slip control device 20 of an electric vehicle comprises: threshold calculation means 18; following wheel rotation number observation means 21; angular acceleration calculation means 22; angular acceleration comparison means 26; torque release means 25 during slip time; reference rotation number calculation means 19; and torque recovery means 29. The reference rotation number calculation means 19 sets rotation number of a following wheel 6 which is rotation number before being determined that it is slipped by the torque release means 25 during slip time, as reference rotation number, when current rotation number of the following wheel 6 observed by the following wheel rotation number observation means 21 is equal to or less than predetermined rotation number, and sets rotation number of the following wheel 6 which is rotation number when being determined that it is slipped by the torque release means 25 during slip time, as the reference rotation number, when the current rotation number of the following wheel 6 is larger than the predetermined rotation number, and determines whether or not grip is recovered.
【課題】車両の発進時や低速領域においても、正確なトラクション制御を行うことができる電気自動車のスリップ制御装置を提供する。【解決手段】電気自動車のスリップ制御装置20は、閾値計算手段18と、従動輪回転数観測手段21と、角加速度計算手段22と、角加速度比較手段26と、スリップ時トルク解除手段25と、基準回転数計算手段19と、トルク回復手段29とを備える。基準回転数計算手段19は、従動輪回転数観測手段21で観測される従動輪6の現回転数が定められた回転数以下のとき、スリップ時トルク解除手段25でスリップしたと判断される以前の従動輪6の回転数を基準回転数とし、従動輪6の現回転数が定められた回転数より大きいとき、スリップ時トルク解除手段25でスリップしたと判断されたときの従動輪6の回転数を基準回転数とし、グリップが回復したか否かを判断する。【選択図】図3
ELECTRIC VEHICLE SLIP CONTROL DEVICE
電気自動車のスリップ制御装置
08.10.2015
Patent
Elektronische Ressource
Japanisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |