To provide a damping device capable of appropriately reducing resonance of a driving system even in an electric vehicle with a transmission interposed in the driving system.SOLUTION: A driving-system resonance component is extracted from a motor revolution speed with a bandpass filter having, as a pass frequency band, a band of a resonance frequency of a driving system which changes according to a transmission gear ratio of a transmission, and motor torque having an opposite phase to the resonance component is set as default damping torque. An acceleration/deceleration component of a vehicle is included in a bandpass motor revolution speed. Meanwhile, an average value of damping torque only for damping the driving-system resonance component is 0, so that a damping torque offset value which is an average value of the default damping torque is a component suppressing acceleration/deceleration of the vehicle. Accordingly, a value obtained by subtracting the damping torque offset value from the default damping torque is target damping torque for reducing resonance of the driving system. An operation state of a motor is controlled so that target motor torque obtained by adding the target damping torque is attained.SELECTED DRAWING: Figure 2

    【課題】駆動系に変速機を介装する電動車両であっても駆動系の共振を適正に低減することが可能な制振装置を提供する。【解決手段】変速機の変速比に応じて変化する駆動系の共振周波数の帯域を通過周波数帯域とするバンドパスフィルタでモータ回転数から駆動系共振成分を抽出し、この共振成分の逆相のモータトルクをデフォルト制振トルクとして設定する。帯域通過モータ回転数には車両の加減速成分が含まれているが、駆動系共振成分を制振するためだけの制振トルクの平均値は0であるから、デフォルト制振トルクの平均値である制振トルクオフセット値は車両の加減速を抑制する成分となる。したがって、この制振トルクオフセット値をデフォルト制振トルクから減じた値が駆動系の共振を低減する目標制振トルクとなり、この目標制振トルクを加えた目標モータトルクが達成されるようにモータの運転状態を制御する。【選択図】図2


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    Title :

    DAMPING DEVICE FOR ELECTRIC VEHICLE


    Additional title:

    電動車両の制振装置


    Contributors:

    Publication date :

    2020-12-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / 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



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