While a controller performs an elevation operation that is at least either an operation of lowering a holder or an operation of raising the holder, the controller (i) calculates a unit elevation amount, which is an amount by which the holder is raised or lowered per unit rotation amount of the drive motor in an elevation operation range that is a range of heights of the holder in the elevation operation, in accordance with a change in a diameter of an outer circumferential surface of a belt wound around a drum due to winding and unwinding of the belt, and (ii) determines a rotation amount of a drive motor for the elevation operation based on the unit elevation amount.


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    Titel :

    Article Elevating Device


    Beteiligte:
    OTSUKA HIROSHI (Autor:in)

    Erscheinungsdatum :

    22.02.2024


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    H01L Halbleiterbauelemente , SEMICONDUCTOR DEVICES / B66C Krane , CRANES / B66D Haspeln , CAPSTANS



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