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    • 3. 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。
    • 8. 发明授权
    • Control system for hydraulic circuit apparatus
    • 液压回路设备控制系统
    • US4586330A
    • 1986-05-06
    • US401304
    • 1982-07-23
    • Hiroshi WatanabeEiki IzumiYukio AoyagiKazuo HonmaKichio Nakajima
    • Hiroshi WatanabeEiki IzumiYukio AoyagiKazuo HonmaKichio Nakajima
    • F15B11/16E02F9/20E02F9/22F15B11/17F15B21/08
    • F15B11/17E02F9/2221E02F9/2296F15B21/087F15B2211/20546F15B2211/20561F15B2211/27F15B2211/30515F15B2211/30595F15B2211/6333F15B2211/6652F15B2211/6654F15B2211/71
    • A control system for a hydraulic circuit including at least first and second variable displacement volume type hydraulic pumps, at least first and second hydraulic actuators driven by the pumps, and valves for controlling hydraulic connections between the pumps and the actuators. The control system includes a device for deciding the order of priority of hydraulic connections between the first actuator and the first and second hydraulic pumps and the order of priority of hydraulic connections between the second pump and the first and second actuators. A first sensor is provided for sensing maximization of the displacement volume of the first pump, sensing that the displacement volume of the second pump has become substantially zero. A device decides target displacement volumes of the first and second pumps based on information supplied at least by the priority order deciding device and first and second sensor. When the flow rate of hydraulic fluid supplied to the first actuator is increased, the displacement volume of the second pump is increased from substantially zero after the displacement volume of the first pump is maximized. When the flow rate of hydraulic fluid supplied to the first actuator is reduced, the displacement volume of the first pump is reduced after the displacement volume of the second pump has become substantially zero.
    • 一种用于液压回路的控制系统,包括至少第一和第二可变容量型液压泵,由泵驱动的至少第一和第二液压致动器以及用于控制泵和致动器之间的液压连接的阀。 控制系统包括用于确定第一致动器和第一和第二液压泵之间的液压连接的优先顺序的装置以及第二泵与第一和第二致动器之间的液压连接的优先顺序。 提供第一传感器用于感测第一泵的排量的最大化,感测到第二泵的排量已经变得基本上为零。 设备基于至少由优先顺序决定装置和第一和第二传感器提供的信息来确定第一和第二泵的目标排量。 当提供给第一致动器的液压流体的流量增加时,在第一泵的移动容积最大化之后,第二泵的排出容积从基本上为零增加。 当提供给第一致动器的液压流体的流量减小时,在第二泵的排量已经变为基本为零之后,第一泵的排出容积减小。
    • 9. 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。