PROBLEM TO BE SOLVED: To suppress pitching under various situations.SOLUTION: A motor drive device 300 controls a travelling motor M1 which is mounted on an electric forklift and transmits power to a drive wheel. A torque command value generating unit 202 generates a torque command value for instructing a torque of the travelling motor M1. A pitching detection unit 230 detects a pitch angle acceleration around a pitch axis of a vehicle body. A coefficient setting unit 280 sets a first coefficient K1 depending on a state of the electric forklift. A first multiplier 240 multiplies the first coefficient K1 onto the pitch angle acceleration detected by the pitching detection unit 230 and generates a first correction value. A pitching correction unit 244 synthesizes the first correction value with the torque command value.

    【課題】さまざまな状況下でピッチングを抑制する。【解決手段】モータ駆動装置300は、電動フォークリフトに搭載され、駆動輪に動力を伝達する走行モータM1を制御する。トルク指令値生成部202は、走行モータM1のトルクを指示するトルク指令値を生成する。ピッチング検出部230は、車体のピッチ軸周りのピッチ角加速度を検出する。係数設定部280は、電動フォークリフトの状態に応じて第1係数K1を設定する。第1乗算器240は、ピッチング検出部230により検出されたピッチ角加速度に第1係数K1を乗算し、第1補正値を生成する。ピッチング補正部244は、トルク指令値に第1補正値を合成する。【選択図】図5


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    Title :

    MOTOR DRIVE DEVICE FOR ELECTRIC FORKLIFT AND FORKLIFT USING SAME


    Additional title:

    電動フォークリフト用モータ駆動装置およびそれを用いたフォークリフト


    Contributors:
    OKADA JUNICHI (author) / ITO TAKUMI (author)

    Publication date :

    2015-07-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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



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