To suppress abnormal noise generated around a mechanism portion of an electromagnetic actuator 13 as much as possible when a stroke direction of the electromagnetic actuator 13 is reversed.SOLUTION: An electric suspension device comprises: an electromagnetic actuator 13 for generating driving force related to vibration attenuation of a vehicle; an information acquisition unit 43 acquiring information of a stroke speed SV, stroke change amount SA and stroke direction of the electromagnetic actuator 13 in each control period; an attenuation force calculation unit 45 calculating target attenuation force on the basis of the information of the stroke speed SV; and a drive control unit 49 using target driving force which is based on the target attenuation force calculated by the attenuation force calculation unit 45 to perform driving control of the electromagnetic actuator 13. The attenuation force calculation unit 45 calculates equivalent friction compensation force Fif composed of an elastic force component Fef and dynamic friction force Fcf for compensating equivalent friction force related to the electromagnetic actuator 13 on the basis of the information of the stroke change amount SA and the stroke direction, and corrects the target attenuation force on the basis of the calculated equivalent friction compensation force Fif.SELECTED DRAWING: Figure 3

    【課題】電磁アクチュエータ13のストローク方向が反転する際に電磁アクチュエータ13の機構部周辺で生じる異音を可及的に抑制する。【解決手段】車両の振動減衰に係る駆動力を発生させる電磁アクチュエータ13と、電磁アクチュエータ13のストローク速度SV、ストローク変化量SA及びストローク方向の情報を制御周期毎に取得する情報取得部43と、ストローク速度SVの情報に基づいて目標減衰力を算出する減衰力算出部45と、減衰力算出部45で算出した目標減衰力に基づく目標駆動力を用いて電磁アクチュエータ13の駆動制御を行う駆動制御部49と、を備える。減衰力算出部45は、ストローク変化量SA及びストローク方向の情報に基づいて、電磁アクチュエータ13に関する等価的な摩擦力を補償するための弾性力成分Fef及び動摩擦力成分Fcfからなる等価摩擦補償力Fifを算出し、当該算出した等価摩擦補償力Fifに基づいて目標減衰力の補正を行う。【選択図】図3


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    Title :

    ELECTRIC SUSPENSION DEVICE


    Additional title:

    電動サスペンション装置


    Contributors:

    Publication date :

    2020-10-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge



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