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    • 32. 发明申请
    • Magnetostrictive torque sensor and electric steering system
    • 磁致伸缩转矩传感器和电动转向系统
    • US20070240522A1
    • 2007-10-18
    • US11818071
    • 2007-06-13
    • Yasuo ShimizuYoshito NakamuraShunichiro SueyoshiAtsuhiko Yoneda
    • Yasuo ShimizuYoshito NakamuraShunichiro SueyoshiAtsuhiko Yoneda
    • G01L3/10
    • G01L3/102G01L3/105G01L5/221
    • A magnetostrictive torque sensor includes first and second magnetostrictive films which are provided at a shaft and have different magnetic anisotropies; a first measurement coil and a second measurement coil which face the first magnetostrictive film; and a third measurement coil and a fourth measurement coil which face the second magnetostrictive film. A torque applied to the shaft is measured based on a variation in magnetic characteristics of the first and the second magnetostrictive films; and a failure of the magnetostrictive torque sensor is detected based on a first difference between output values from the first and the second measurement coils and a second difference between output values from the third and the fourth measurement coils. An electric steering system includes the magnetostrictive torque sensor for measuring a steering torque of the system; and an electric motor driven based on the measured magnetostrictive torque for steering the vehicle.
    • 磁致伸缩扭矩传感器包括第一和第二磁致伸缩膜,其设置在轴处并具有不同的磁各向异性; 面对第一磁致伸缩膜的第一测量线圈和第二测量线圈; 以及面对第二磁致伸缩膜的第三测量线圈和第四测量线圈。 基于第一和第二磁致伸缩膜的磁特性的变化来测量施加到轴的扭矩; 并且基于来自第一和第二测量线圈的输出值之间的第一差异和来自第三和第四测量线圈的输出值之间的第二差值来检测磁致伸缩扭矩传感器的故障。 电动转向系统包括用于测量系统的转向转矩的磁致伸缩扭矩传感器; 以及基于用于转向车辆的测量的磁致伸缩扭矩驱动的电动马达。
    • 35. 发明授权
    • Rotating-body control device
    • 旋转体控制装置
    • US07087890B2
    • 2006-08-08
    • US10815681
    • 2004-04-02
    • Sumiko AmamiyaTatsuya OzekiShigeru KamioYasuhiro NakaiKazuo KawaguchiYasuo Shimizu
    • Sumiko AmamiyaTatsuya OzekiShigeru KamioYasuhiro NakaiKazuo KawaguchiYasuo Shimizu
    • H03D3/00
    • G01D5/342
    • A P-ECU controls an actuator which drives a shift control mechanism. An encoder signal acquisition unit acquires signals output from an encoder which detects a rotational angle of the actuator. A counter calculates a count value from the output signals of the encoder. An energization control unit controls energization to the actuator. A first phase-matching unit uses the Z-phase signal of the encoder to match the count value with energized phases so as to find a correspondence therebetween and a second phase-matching unit matches the count value with energized phases to find a correspondence therebetween without using the Z-phase signal of the encoder. If the first phase-matching unit detects an abnormality of the encoder, the second phase-matching unit subsequently performs phase matching.
    • P-ECU控制驱动变速控制机构的致动器。 编码器信号获取单元获取从检测致动器的旋转角度的编码器输出的信号。 计数器根据编码器的输出信号计算计数值。 通电控制单元控制致动器的通电。 第一相位匹配单元使用编码器的Z相信号使计数值与通电相位相匹配,以便找出它们之间的对应关系,并且第二相位匹配单元将计数值与通电相位相匹配,以找到它们之间的对应关系,而没有 使用编码器的Z相信号。 如果第一相位匹配单元检测到编码器的异常,则第二相位匹配单元随后执行相位匹配。
    • 36. 发明申请
    • Electric steering system for rapidly increasing damper gain after steering speed exceeds a specific value
    • 用于在转向速度之后快速增加阻尼器增益的电动转向系统超过特定值
    • US20060090953A1
    • 2006-05-04
    • US11258479
    • 2005-10-25
    • Yasuo ShimizuShigeru YamawakiKazushige Sugamata
    • Yasuo ShimizuShigeru YamawakiKazushige Sugamata
    • B62D5/04
    • B62D5/0469
    • An electric steering system includes a device for measuring a steering input into a steering system; a device for measuring a steering speed; a section for computing a target current based on the steering input; and a control section for applying a steering power to the steering system by driving a motor according to the target current, and applying damping to the steering system based on the steering speed. A rate of increase in a damper gain defined when the steering speed is equal to or greater than a predetermined value is higher than that defined when the steering speed is less than the predetermined value, or the damper gain defined when the steering speed is equal to or greater than a predetermined value has a constant value increased in a step form from values of the damper gain defined when the steering speed is less than the predetermined value.
    • 电动转向系统包括用于测量转向系统中的转向输入的装置; 用于测量转向速度的装置; 用于基于所述转向输入来计算目标电流的部分; 以及控制部,其通过根据目标电流驱动电动机将转向动力施加到转向系统,并且基于转向速度对转向系统施加阻尼。 当转向速度等于或大于预定值时确定的阻尼器增益的增加率高于当转向速度小于预定值时限定的阻尼器增益的增加率,或者当转向速度等于 或大于预定值时,具有从转向速度小于预定值时限定的阻尼器增益的值以阶梯形式增加的常数值。
    • 37. 发明授权
    • Torque sensor
    • 扭矩传感器
    • US06978686B2
    • 2005-12-27
    • US10658832
    • 2003-09-08
    • Yasuo ShimizuHisao AsaumiShunichiro Sueyoshi
    • Yasuo ShimizuHisao AsaumiShunichiro Sueyoshi
    • B62D5/04G01L3/10G01L5/22G01L3/02
    • G01L3/102G01L3/105
    • In a torque sensor having a magnetic metal film with magnetic anisotropy attached to a torque transmission shaft, and an exciting coil and a pair of detector coils each installed near the magnetic metal film, outputs of the detector coils and a reference signal are respectively added in waveform adders when the exciting coil is energized by an exciting power source. Then, the outputs of the adders and the reference signal are respectively compared in phase in phase comparators, and the outputs of the comparators are respectively converted in voltage values. A differential amplifier amplifies a difference between the voltage values, and a torque detector detects direction and magnitude of the torque applied to the torque transmission shaft from polarity and magnitude of the difference voltage value, thereby enabling to accurately detect applied torque even when installed near noise-producing electrical equipment such as an electric power steering system.
    • 在具有附着在转矩传递轴上的具有磁各向异性的磁性金属膜的扭矩传感器和分别安装在磁性金属膜附近的励磁线圈和一对检测线圈的情况下,分别添加检测线圈的输出和基准信号 励磁线圈由激励电源通电时的波形加法器。 然后,分别在相位比较器中分别比较加法器和参考信号的输出,并将比较器的输出分别转换成电压值。 差分放大器放大电压值之差,转矩检测器根据差动电压值的极性和大小来检测施加到转矩传递轴的扭矩的方向和幅度,从而即使在安装在噪声附近时也可以精确地检测施加的转矩 生产电力设备如电动助力转向系统。