PROBLEM TO BE SOLVED: To provide a driving force control device of an electric vehicle capable of preventing an actual driving force from separating from a target driving force using a simple configuration at the time of occurrence of a traveling resistance or at the time of braking while suppressing a torsional vibration occurring in a driving system.SOLUTION: A driving force control device that controls a driving force of a motor in a driving system of an electric vehicle includes: target driving force designation means 11 that designates a target driving force on the basis of a driver's request driving force; division means 12 that divides the target driving force by a reduction gear ratio; target speed arithmetic means 15 that computes a target rotating speed of the motor on the basis of the target driving force; correction quantity arithmetic means 20 that computes a correction quantity, which diminishes a deviation of an actual rotating speed from a target rotating speed and has a disturbance torque component removed therefrom, on the basis of the target rotating speed and the actual rotating speed of the motor; and command value arithmetic means 19 that computes a motor torque command value by adding the correction quantity to the target driving force which has been divided by the reduction gear ratio.
【課題】駆動系に生じるねじれ振動を抑制しつつ、簡単な構成で、走行抵抗発生時や制動時において目標駆動力と実際の駆動力との乖離を抑制することができる電動車両の駆動力制御装置を提供する。【解決手段】電動車両の駆動系におけるモータの駆動力を制御する駆動力制御装置であって、運転者の要求駆動力に基づいて目標駆動力を設定する目標駆動力設定手段11と、目標駆動力を減速比で除算する除算手段12と、目標駆動力に基づいてモータの目標回転速度を演算する目標速度演算手段15と、目標回転速度及びモータの実回転速度に基づいて、目標回転速度と実回転速度との偏差を小さくする補正量であって、外乱トルク成分を除去した補正量を演算する補正量演算手段20と、減速比で除算した目標駆動力に補正量を加算することにより、モータトルク指令値を演算する指令値演算手段19とを備える。【選択図】図1
DRIVING FORCE CONTROL DEVICE OF ELECTRIC VEHICLE
電動車両の駆動力制御装置
2015-06-08
Patent
Electronic Resource
Japanese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Electric vehicle driving force control device and electric vehicle driving force control method
European Patent Office | 2015
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