To provide a driving device for an electric actuator employing a ball screw capable of effectively reducing the possibility of occurrence of a serious defect such that a screw shaft gets inoperable.SOLUTION: A driving device 60 is configured to drive an electric actuator. The electric actuator comprises: an electric motor 13; a screw shaft; a nut which is rotatably supported by an outer periphery of the screw shaft so as to rotate together with the electric motor 13; multiple balls being interposed between the screw shaft and the nut; and a housing which has an opening at one side in a direction of the screw shaft and the bottom at the other side in a shaft direction. The driving device 60 includes a power supply monitoring part 65 for monitoring for a stoppage of power supply from a power source 70 and a control part 64 which is configured to perform control so as to, when the power supply from the power source 70 stops, apply a short circuit brake on the electric motor 13.SELECTED DRAWING: Figure 2

    【課題】ボールねじを採用した電動アクチュエータのねじ軸が動作不能となるような重大欠陥が発生する可能性を効果的に低減できる駆動装置を提供する。【解決手段】駆動装置60は電動アクチュエータを駆動する。電動アクチュエータは、電動モータ13と、ねじ軸と、ねじ軸の外周に回転可能に支持され、電動モータ13の回転とともに回転するナットと、ねじ軸とナットとの間に介在する複数のボールと、ねじ軸の軸方向の一方側が開口し、軸方向の他方側に底部を有する筐体とを備える。駆動装置60は、電源70からの電力供給の停止の有無を監視する電源監視部65と、電源70からの電力供給が停止された場合、電動モータ13に対して短絡ブレーキ制御を行なう制御部64とを備える。【選択図】図2


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    Title :

    DRIVING DEVICE FOR ELECTRIC ACTUATOR


    Additional title:

    電動アクチュエータの駆動装置


    Contributors:

    Publication date :

    2019-04-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B62D MOTOR VEHICLES , Motorfahrzeuge / F16H Getriebe , GEARING / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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