PROBLEM TO BE SOLVED: To provide a drive force control device for an electric vehicle capable of suppressing overshoot.SOLUTION: A drive force control device comprises: division means 12 for dividing target drive force, which is corrected by a feedforward compensator 14 constructed of a first transfer function in which actual drive force to the target drive force is ideal response, and a reverse system of a control system in which the response of the control system for correcting by dynamic correction the target drive force is approximated by a second transfer function and an inverse of the second transfer function is determined, with a reduction ratio; target speed calculation means 15 for inputting the target drive force which is corrected on the feedforward compensator to the ideal vehicle model in which there is no back lash, being complete rigid body in a vehicle drive system, for calculating target rotation speed of a motor of the ideal vehicle model; correction amount calculation means 20 for calculating a correction amount for reducing deviation between target rotation speed and actual rotation speed, based on the target rotation speed and the actual rotation speed of the motor; and command value calculation means 19 for calculating a motor torque command value by adding the correction amount to the target drive force obtained by being divided with the reduction ratio.
【課題】オーバーシュートを低減する電動車両の駆動力制御装置。【解決手段】目標駆動力に対する実際の駆動力が理想応答となる第1伝達関数と目標駆動力に対して動的な補正を行う制御系の応答を第2伝達関数で近似し第2伝達関数の逆数をとった制御系の逆系とで構成されるフィードフォワード補償器14で補正された目標駆動力を減速比で除算する除算手段12、車両駆動系においてバックラッシュがなく且つ完全な剛体であるとした理想車両モデルに対してフィードフォワード補償器で補正された目標駆動力を入力し理想車両モデルのモータの目標回転速度を演算する目標速度演算手段15、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を演算する補正量演算手段20、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を備える。【選択図】図2
DRIVE FORCE CONTROL DEVICE FOR ELECTRIC VEHICLE
電動車両の駆動力制御装置
09.11.2015
Patent
Elektronische Ressource
Japanisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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