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    • 3. 发明授权
    • Vehicle having tire wear evaluation system
    • 车辆具有轮胎磨损评估系统
    • US08319621B2
    • 2012-11-27
    • US12709096
    • 2010-02-19
    • Akira KikuchiMotoo FutamiToshikazu MinoshimaTomohiko YasudaTakayuki SatoKichio Nakajima
    • Akira KikuchiMotoo FutamiToshikazu MinoshimaTomohiko YasudaTakayuki SatoKichio Nakajima
    • B60Q1/00
    • B60C23/04B60C11/246B60C99/006
    • A vehicle which evaluates tire wear properly even in a road condition that tires easily slip or lock up. The vehicle, which has a driven wheel and a driving wheel with tires attached thereto, includes: a revolution speed detector for detecting revolution speeds of the driven and driving wheels; a wheel speed detector for detecting wheel speeds of the driven and driving wheels based on the detected revolution speed data of the driven and driving wheels; a wheel speed ratio detector for detecting a wheel speed ratio between the driven and driving wheels based on the detected wheel speed data of the driven and driving wheels; and a tire condition evaluator for outputting an evaluation result indicating that the tire(s) attached to the driven wheel and/or driving wheel is(are) worn when the wheel speed ratio is higher than a preset threshold.
    • 即使在轮胎容易滑动或锁定的道路状况下也能够正确地评估轮胎磨损的车辆。 具有从动轮和附带轮胎的驱动轮的车辆包括:用于检测从动和驱动轮的转速的转速检测器; 用于根据所检测到的从动驱动轮和驱动轮的转速数据来检测从动和驱动轮的车轮速度的车轮速度检测器; 轮速比检测器,用于根据检测到的从动和驱动轮的车轮速度数据来检测从动和驱动车轮之间的车轮速比; 以及轮胎状况评估器,用于输出当轮速比高于预设阈值时表示安装在从动轮和/或驱动轮上的轮胎被磨损的评估结果。
    • 4. 发明申请
    • ELECTRICALLY DRIVEN VEHICLE
    • 电动车
    • US20130144480A1
    • 2013-06-06
    • US13816523
    • 2011-07-29
    • Hiroyuki KobayashiAkira KikuchiTomohiko YasudaTakayuki SatouKichio Nakajima
    • Hiroyuki KobayashiAkira KikuchiTomohiko YasudaTakayuki SatouKichio Nakajima
    • G06F17/00
    • G06F17/00B60K7/0007B60K28/16B60K2007/0061B60L15/20B60T8/17616B60T2201/04B60W2520/263B60W2520/28Y02T10/645Y02T10/646Y02T10/7275
    • An electrically driven vehicle equipped with electric motors (1, 4) for driving or braking drive wheels (3, 6), and an electric motor controller (33) for controlling the electric motors includes: wheel speed detectors (9 to 12) for detecting the wheel speed of the drive wheels and that of idler wheels (7, 8); computing means (22 to 28, 35 to 38) for computing the slip ratio of the drive wheels based on the wheel speed of the drive wheels and that of the idler wheels; and a determiner (29) for determining that the drive wheels are slipping if the slip ratio exceeds a slip ratio determination value. If the wheel speed of the idler wheels is lower than set speeds Va2, Vb2, then the determiner (29) changes the slip ratio determination value to a value having as the same sign as, and a larger absolute value than, the values λa2, λb2 used when the wheel speed of the idler wheels is higher than the set speeds Va2, Vb2. This structure shortens acceleration time during acceleration traveling and reduces braking distance during deceleration traveling while inhibiting vibrations of the electrically driven vehicle.
    • 一种配备有用于驱动或制动驱动轮(3,6)的电动机(1,4)的电动车辆和用于控制电动机的电动机控制器(33),包括:用于检测的车轮速度检测器(9至12) 驱动轮的轮速和惰轮(7,8)的转速; 用于基于所述驱动轮的轮速和所述惰轮的车轮速度计算所述驱动轮的打滑比的计算装置(22至28,35至38); 以及如果滑移比超过滑移率确定值,则确定驱动轮滑动的确定器(29)。 如果惰轮的车轮速度低于设定速度Va2,Vb2,则确定器(29)将滑移率判定值改变为具有与值λa2,Vb2相同的符号和更大的绝对值的值, 当惰轮的车轮速度高于设定速度Va2,Vb2时,使用lambdab2。 该结构缩短了加速行驶时的加速时间,并且减少了减速行驶时的制动距离,同时抑制了电动车辆的振动。
    • 5. 发明授权
    • Electrically driven vehicle
    • 电动车
    • US08880261B2
    • 2014-11-04
    • US13816523
    • 2011-07-29
    • Hiroyuki KobayashiAkira KikuchiTomohiko YasudaTakayuki SatouKichio Nakajima
    • Hiroyuki KobayashiAkira KikuchiTomohiko YasudaTakayuki SatouKichio Nakajima
    • B60L9/00E21B7/04G01V3/00B60L15/20B60T8/1761B60K28/16G06F17/00B60K7/00
    • G06F17/00B60K7/0007B60K28/16B60K2007/0061B60L15/20B60T8/17616B60T2201/04B60W2520/263B60W2520/28Y02T10/645Y02T10/646Y02T10/7275
    • An electrically driven vehicle equipped with electric motors (1, 4) for driving or braking drive wheels (3, 6), and an electric motor controller (33) for controlling the electric motors includes: wheel speed detectors (9 to 12) for detecting the wheel speed of the drive wheels and that of idler wheels (7, 8); computing means (22 to 28, 35 to 38) for computing the slip ratio of the drive wheels based on the wheel speed of the drive wheels and that of the idler wheels; and a determiner (29) for determining that the drive wheels are slipping if the slip ratio exceeds a slip ratio determination value. If the wheel speed of the idler wheels is lower than set speeds Va2, Vb2, then the determiner (29) changes the slip ratio determination value to a value having as the same sign as, and a larger absolute value than, the values λa2, λb2 used when the wheel speed of the idler wheels is higher than the set speeds Va2, Vb2. This structure shortens acceleration time during acceleration traveling and reduces braking distance during deceleration traveling while inhibiting vibrations of the electrically driven vehicle.
    • 一种配备有用于驱动或制动驱动轮(3,6)的电动机(1,4)的电动车辆和用于控制电动机的电动机控制器(33),包括:用于检测的车轮速度检测器(9至12) 驱动轮的轮速和惰轮(7,8)的转速; 用于基于所述驱动轮的轮速和所述惰轮的车轮速度计算所述驱动轮的打滑比的计算装置(22至28,35至38); 以及如果滑移比超过滑移率确定值,则确定驱动轮滑动的确定器(29)。 如果惰轮的车轮速度低于设定速度Va2,Vb2,则确定器(29)将滑移率判定值改变为具有与值λa2,Vb2相同的符号,绝对值大的值, 当惰轮的车轮速度高于设定速度Va2,Vb2时使用的λb2。 该结构缩短了加速行驶时的加速时间,并且减少了减速行驶时的制动距离,同时抑制了电动车辆的振动。