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    • 61. 发明申请
    • IPM TYPE OF SYNCHRONOUS MACHINE
    • IPM型同步机
    • US20090134732A1
    • 2009-05-28
    • US12272104
    • 2008-11-17
    • Akiya ShichijohShin KusaseYuya MizumaSatoshi Ito
    • Akiya ShichijohShin KusaseYuya MizumaSatoshi Ito
    • H02K21/14H02K21/22
    • H02K1/276H02K1/246
    • A synchronous machine comprises a stator and a rotor that faces the stator and rotates on a shaft thereof in a circumferential direction The rotor has magnetic salient poles that generate reluctance torque and magnet-originating magnetic poles that generate magnet torque by using permanent magnets embedded in the rotor, The machine comprises means for shifting a magnetically substantial central position of magnetic flux emanating from the permanent magnets in the circumferential direction, by an electrical angle π/2 plus a predetermined angle Δθ, from a reference position taken as a central position between paired magnetic salient poles composing each magnetic pole of the machine among the magnetic salient poles. Hence a maximum amplitude of a sum between a harmonic component of the magnet torque and the reluctance torque is changed from that obtained at the reference position without the shift.
    • 同步电机包括定子和转子,该定子和转子面向定子并沿圆周方向在其轴上旋转。转子具有产生磁阻转矩的磁性极磁极和产生磁矩的磁极,通过使用埋入 转子,该机器包括用于将从永久磁铁发出的磁通量的磁性实质中心位置在周向上移动电角度pi / 2加上预定角度Deltatheta的装置,该参考位置作为成对的中心位置之间的参考位置 在磁极之间组成机器的每个磁极的磁性凸极。 因此,磁转矩的谐波分量和磁阻转矩之和的最大振幅从基准位置所获得的最大振幅变化而不发生偏移。
    • 67. 发明授权
    • Semiconductor integrated circuit device
    • 半导体集成电路器件
    • US06353239B1
    • 2002-03-05
    • US09586843
    • 2000-06-05
    • Satoshi Ito
    • Satoshi Ito
    • H01L2710
    • G11C7/1084G11C7/1051G11C7/1078H01L21/823462H01L27/088
    • A semiconductor integrated circuit device having a port functioning as at least one of an input port and an output port, and can operates at high speed is provided. The port is divided into a first region in which a voltage of 3V is applied to the gate electrode and a second region in which a voltage of 3V or 5V is applied to the gate electrode. The thickness of gate oxide film of a MOS field effect transistor located in the first region is designed to be relatively small. The thickness of gate oxide film of a MOS field effect transistor located in the second region is designed to be relatively large. The regions operating at a voltage of 3V (the first region) and the regions operating at a voltage of 3V or 5V (the second region) are regularly divided.
    • 一种半导体集成电路器件,其具有用作输入端口和输出端口中的至少一个的端口,并且可以高速工作。 端口被分为施加到栅电极的3V电压的第一区域和施加到栅电极的3V或5V电压的第二区域。 位于第一区域中的MOS场效应晶体管的栅极氧化膜的厚度被设计为相对较小。 位于第二区域的MOS场效应晶体管的栅极氧化膜的厚度被设计为相对较大。 以3V(第一区域)的电压工作的区域和在3V或5V的电压(第二区域)工作的区域被规律地分开。
    • 69. 发明授权
    • Dynamic error correcting apparatus for inertial navigation
    • 用于惯性导航的动态纠错装置
    • US5410487A
    • 1995-04-25
    • US020840
    • 1993-02-22
    • Hiroshi OkayamaMasao KobayashiSatoshi ItoYoshio Hirose
    • Hiroshi OkayamaMasao KobayashiSatoshi ItoYoshio Hirose
    • G01C21/16G01C25/00C06F15/50
    • G01C25/005G01C21/16
    • A counting section includes: a first gyro pulse counter which counts gyro pulses from each of X-, Y-, Z- and S-axis gyroscopes during each counting period after being reset immediately before the start of the counting period and outputs the count value as a first gyro pulse count value at fixed time intervals; and a second gyro pulse counter which is reset at said fixed time intervals, counts the gyro pulses and outputs the count value as a second gyro pulse count value. A dynamic error calculating section includes: gyro multipliers/subtractors whereby, for each combination of two different main axes, a mutual product difference of the gyro pulse count values for the two axes is calculated as a main-axis system gyro pulse error and, for each combination of one of the X, Y and Z axes and the S axis, a mutual product difference of the gyro pulse count values for the S axis and each of the X, Y and Z axes is calculated as an auxiliary-axis system gyro error; and a gyro error integrating section whereby each of the X-axis, Y-axis and Z-axis system gyro errors and the auxiliary-axis system gyro error, provided at the fixed time intervals, are accumulated within each calculation period to obtain a gyro error integrated value. A strap-down calculating processor uses the gyro error integrated values from the gyro error integrating section to calculate the correctional quantity of a coning error for each system wherein one of the X, Y and Z axes is replaced with the S axis.
    • 计数部分包括:第一陀螺仪脉冲计数器,在立即在计数周期开始之前的复位之后的每个计数周期期间计数来自X,Y,Z和S轴陀螺仪中的每一个的陀螺仪脉冲,并输出计数值 作为固定时间间隔的第一陀螺仪脉冲计数值; 并且以所述固定时间间隔复位的第二陀螺仪脉冲计数器对陀螺仪脉冲进行计数,并将该计数值作为第二陀螺仪脉冲计数值输出。 动态误差计算部分包括:陀螺仪乘法器/减法器,其中对于两个不同主轴的每个组合,两轴的陀螺仪脉冲计数值的相互乘积差被计算为主轴系陀螺仪脉冲误差,并且对于 X轴,Y轴和Z轴之间的每个组合以及S轴,计算S轴与X轴,Y轴和Z轴各自的陀螺仪脉冲计数值的相乘差作为辅助轴系陀螺 错误; 以及在每个计算周期内累积以固定时间间隔提供的X轴,Y轴和Z轴系陀螺误差以及辅轴系陀螺误差各自的陀螺误差积分部,以获得陀螺仪 误差积分值。 减速计算处理器使用来自陀螺仪误差积分部分的陀螺仪误差积分值来计算每个系统的锥形误差的校正量,其中X轴,Y轴和Z轴之一被S轴代替。