A motor drive apparatus of an electric forklift includes first and second torque command value generation units that individually generate a torque command value indicating torque of a corresponding traveling motor in response to a gap between a speed command value and a speed detection value; and first and second slip detectors that individually generate a slip ratio estimation value showing a slip state of a corresponding drive wheel based on the speed detection value and the torque command value. The slip detectors individually have a first arithmetic unit which generates an inertial force estimation value proportional to a differential value of the speed detection value of the corresponding traveling motor and a second arithmetic unit which generates the slip ratio estimation value in response to a relationship between the corresponding inertial force estimation value and the torque command value of the corresponding traveling motor.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Motor drive apparatus for electric forklift and electric forklift adopting the same


    Beteiligte:
    MAKINO KENNICHI (Autor:in) / ITOH TAKUMI (Autor:in) / OKADA JUNICHI (Autor:in)

    Erscheinungsdatum :

    2015-09-29


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



    MOTOR DRIVE DEVICE FOR ELECTRIC FORKLIFT AND FORKLIFT USING SAME

    OKADA JUNICHI / ITO TAKUMI | Europäisches Patentamt | 2015

    Freier Zugriff

    Forklift counterweight and electric forklift

    YING LINGJUN / XIAO JUNCHENG / WEN JINGJING et al. | Europäisches Patentamt | 2020

    Freier Zugriff

    Electric forklift

    LI GUANGZHI / LI MINGHE | Europäisches Patentamt | 2023

    Freier Zugriff

    ELECTRIC FORKLIFT

    HAN SANG EUN / KIM WOO SEUNG / PARK CHANG WOON et al. | Europäisches Patentamt | 2016

    Freier Zugriff

    Electric Forklift

    Europäisches Patentamt | 2016

    Freier Zugriff