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    • 1. 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. 发明申请
    • Magnetic recording medium and magnetic storage device
    • 磁记录介质和磁存储装置
    • US20080096054A1
    • 2008-04-24
    • US11704880
    • 2007-02-09
    • Jun TaguchiYuki YoshidaKazuhisa ShidaNoriyuki AsakuraAkira Kikuchi
    • Jun TaguchiYuki YoshidaKazuhisa ShidaNoriyuki AsakuraAkira Kikuchi
    • G11B5/66
    • G11B5/7325
    • A magnetic recording medium includes a substrate having a surface where a texture is formed along a recording direction; a first underlayer formed on the surface of the substrate and made of Cr or CrMn; a second underlayer formed on the first underlayer and made of CrMn; a third underlayer formed on the second underlayer and made of Cr—X1 alloy wherein X1 includes a material selected from the group consisting of Mo, Ti, W, V, Ta, and Nb; and a recording layer formed on the third underlayer and made of a ferromagnetic material whose main ingredient is Co; wherein content of Mn of the second underlayer is greater than content of Mn of the first underlayer if the first underlayer is made of CrMn; and a total of film thicknesses of the first underlayer and the second underlayer is in a range between 2 nm and 7 nm.
    • 磁记录介质包括具有沿着记录方向形成纹理的表面的基板; 在基板表面上形成由Cr或CrMn制成的第一底层; 在第一底层上形成的由CrMn制成的第二底层; 在第二底层上形成的由Cr-X1合金制成的第三底层,其中X1包括选自Mo,Ti,W,V,Ta和Nb的材料; 以及形成在第三底层上并由主要成分为Co的铁磁材料制成的记录层; 如果第一底层由CrMn制成,则第二底层的Mn含量大于第一底层的Mn含量; 并且第一底层和第二底层的总膜厚度在2nm和7nm之间的范围内。