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    • 91. 发明专利
    • Electric drive vehicle
    • 电动车
    • JP2012055113A
    • 2012-03-15
    • JP2010196953
    • 2010-09-02
    • Hitachi Constr Mach Co Ltd日立建機株式会社
    • KOBAYASHI NORIYUKIKIKUCHI TERUYASUDA TOMOHIKOSATO TAKAYUKINAKAJIMA YOSHIO
    • B60L15/20B60T8/1761
    • G06F17/00B60K7/0007B60K28/16B60K2007/0061B60L15/20B60T8/17616B60T2201/04B60W2520/263B60W2520/28Y02T10/645Y02T10/646Y02T10/648Y02T10/7275
    • PROBLEM TO BE SOLVED: To shorten acceleration time when a vehicle is accelerating and a braking distance when the vehicle is decelerating, and to suppress vibration of an electric drive vehicle.SOLUTION: The electric drive vehicle includes: drive wheels 3, 6; driven wheels 7, 8; electric motors 1, 4 for driving or braking the drive wheels; and an electric motor controller 33 for controlling the electric motors. This vehicle also includes: wheel speed detectors 9 to 12 for detecting the wheel speed of the drive wheels and the driven wheels; a computing means for computing the slip ratio of the drive wheels on the basis of the wheel speed of the drive wheels and the driven wheels; and a determiner for determining that the drive wheels are slipping when the slip ratio exceeds a slip ratio determination value. At the determiner, when the wheel speed of the driven wheels is lower than the set speed, a slip ratio determination value is changed to a value having the same sign as, and a greater absolute value than the value used when the wheel speed of the driven wheels is greater than the set speed.
    • 要解决的问题:为了缩短车辆加速时的加速时间和车辆减速时的制动距离,并且抑制电动车辆的振动。 电动车辆包括:驱动轮3,6; 从动轮7,8; 用于驱动或制动驱动轮的电动机1,4; 以及用于控制电动机的电动机控制器33。 该车辆还包括:用于检测驱动轮和从动轮的车轮速度的车轮速度检测器9至12; 用于根据驱动轮和从动轮的车轮速度计算驱动轮的滑移率的计算装置; 以及确定器,用于当滑移比超过滑移率确定值时确定驱动轮滑动。 在确定器中,当从动轮的车轮速度低于设定速度时,滑移率确定值被改变为具有与当车轮速度相同的符号的值,并且具有比当车轮速度 驱动轮大于设定速度。 版权所有(C)2012,JPO&INPIT