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    • 1. 发明授权
    • Gyro compass
    • 陀螺指南针
    • US4879918A
    • 1989-11-14
    • US363408
    • 1988-10-27
    • Takeshi HojoKanshi YamamotoShinichi KawadaKazushige MurabayashiMamoru AkimotoMichio Fukano
    • Takeshi HojoKanshi YamamotoShinichi KawadaKazushige MurabayashiMamoru AkimotoMichio Fukano
    • G01C19/38
    • G01C19/38Y10T74/1254Y10T74/1289
    • A gyro compass having a gyro case incorporating a gyro of which the spin axis is substantially horizontal, a vertical ring disposed around the outer periphery of the gyro case and for rotatably supporting the gyro case around a vertical axis, a follow-up pickup for detecting an angular displacement between the gyro case and the vertical ring around the vertical axis, an accelerometer having an input axis parallel to the spin axis, a vertical torquer mounted on the vertical ring for applying a torque of magnitude proportional to an input signal to the gyro case around the vertical axis, and a control apparatus for receiving an output signal of the accelerometer and for supplying its output to the vertical torquer, in which during a predetermined time after the gyro compass is started to operate, the output signal from the accelerometer is differentiated to produce a differentiation signal which is then supplied to the vertical torquer to reduce a settling time of the north-seeking action.
    • 一种具有陀螺仪的陀螺仪罗盘,其具有旋转轴基本上水平的陀螺仪;围绕陀螺仪壳体的外周设置的垂直环,并且用于围绕垂直轴线可旋转地支撑陀螺仪壳体,用于检测的跟踪拾取器 陀螺仪壳体和垂直轴之间的垂直环之间的角位移,具有平行于旋转轴的输入轴的加速度计,安装在垂直环上的垂直绞盘,用于施加与输入信号成比例的扭矩扭矩到陀螺仪 围绕垂直轴的壳体,以及用于接收加速度计的输出信号并将其输出提供给垂直托盘的控制装置,其中在陀螺罗盘开始运行之后的预定时间内,来自加速度计的输出信号为 分化以产生分化信号,然后将其分配给垂直绞盘,以减少寻北动作的稳定时间 n。
    • 2. 发明授权
    • Gyro compass
    • 陀螺指南针
    • US5416976A
    • 1995-05-23
    • US100050
    • 1993-07-30
    • Fuyuki HaneShinichi KawadaTakeshi HojoMamoru AkimotoKazushige Murabayashi
    • Fuyuki HaneShinichi KawadaTakeshi HojoMamoru AkimotoKazushige Murabayashi
    • G01C19/38
    • G01C19/38
    • A gyro compass having a gyro case housing therein a gyro and supported with freedom of three axes, functions for outputting a signal corresponding to an inclined angle of the gyro spin axis relative to the horizontal plane, and a function for applying a torque around a vertical axis of the gyro case in proportion to an input signal. A controller is supplied with a signal corresponding to the inclined angle and a latitude value at which the gyro compass is located, and a constant relative to the input latitude value is determined by the controller after the gyro compass is energized. A signal, resulting from differentiating the signal corresponding to the inclined angle during a predetermined time, is added to the product of the signal corresponding to the inclined angle and the constant. This added signal functions as the input signal for the gyro, whereby a constant optimum north-seeking movement is carried out regardless of the change of the latitude value. An error corrector is provided having supplied to it the signal corresponding to the inclined angle, the speed signal of the vehicle and its heading azimuth signal, and a bias error caused by the inclined angle of the gyro compass spin axis and an azimuth error caused by the movement of the vehicle are estimated and calculated to thereby reduce an azimuth error caused by any bias error and the vehicles' movement.
    • 一种陀螺罗盘,其具有容纳在其中的陀螺仪并具有三轴自由度的陀螺仪壳体,用于输出对应于陀螺仪旋转轴线相对于水平面的倾斜角度的信号的功能,以及用于在垂直方向施加扭矩的功能 陀螺仪壳体的轴与输入信号成比例。 向控制器提供对应于陀螺仪罗盘所在的倾斜角度和纬度值的信号,并且在陀螺仪罗盘通电之后由控制器确定相对于输入纬度值的常数。 将在预定时间内对应于倾斜角度的信号进行微分而产生的信号加到对应于倾斜角度和常数的信号的积中。 该添加的信号用作陀螺仪的输入信号,由此执行恒定的最佳北移运动,而不管纬度值的变化。 提供了一种误差校正器,其向其提供了与倾斜角度,车辆速度信号及其方位角信号相对应的信号,以及由陀螺仪罗盘旋转轴的倾斜角度引起的偏移误差和由 估计和计算车辆的运动,从而减少由任何偏置误差和车辆运动引起的方位角误差。
    • 3. 发明授权
    • Gyro compass
    • 陀螺指南针
    • US5272815A
    • 1993-12-28
    • US790245
    • 1991-11-08
    • Fuyuki HaneShinichi KawadaTakeshi HojoMamoru AkimotoKazushige Murabayashi
    • Fuyuki HaneShinichi KawadaTakeshi HojoMamoru AkimotoKazushige Murabayashi
    • G01C19/38
    • G01C19/38
    • A gyro compass having a gyro case housing therein a gyro and supported with freedom of three axes, functions for outputting a signal corresponding to an inclined angle of the gyro spin axis relative to the horizontal plane and a function for applying a torque around a vertical axis of the gyro case in proportion to an input signal, and a controller supplied with the signal corresponding to the inclined angle and a latitude value at which the gyro compass is located, wherein a constant relative to the input latitude value is set by the controller after the gyro compass is energized, a signal, which results from differentiating the signal corresponding to the inclined angle during a predetermined time, is added to a signal, which results from multiplying the signal corresponding to the inclined angle with the constant and an added result is set as the input signal, whereby a constant optimum north-seeking movement is carried out regardless of the change of the latitude value to thereby reduce a settle time. Also, the gyro compass having an error corrector supplied with the signal corresponding to the inclined angle, a speed signal of a navigation vehicle and its heading azimuth signal, wherein a bias error caused by the inclined angle of the gyro compass spin axis and an azimuth error caused by the movement of the navigation vehicle are estimated and calculated to thereby reduce an azimuth error caused by the bias error.
    • 一种陀螺仪罗盘,其具有容纳在其中的陀螺仪并具有三轴自由度的陀螺仪壳体,用于输出对应于陀螺旋转轴线相对于水平面的倾斜角度的信号,以及用于围绕垂直轴线施加扭矩的功能 的陀螺仪盒,以及控制器,其被提供有对应于陀螺仪罗盘所在的倾斜角度和纬度值的信号,其中相对于输入纬度值的常数由控制器设置 陀螺仪罗盘被通电,将在预定时间内对应于倾斜角度的信号进行微分而产生的信号加到由倾斜角相应的信号与常数相乘而产生的信号,并且相加的结果是 设定为输入信号,由此进行恒定的最佳北移动,而与纬度值的变化无关,从而r 降低安息时间。 此外,陀螺罗盘具有提供有与倾斜角相对应的信号的误差校正器,导航车辆的速度信号及其航向方位信号,其中由陀螺仪罗盘旋转轴的倾斜角度引起的偏置误差和方位角 估计和计算由导航车辆的运动引起的误差,从而减少由偏置误差引起的方位误差。
    • 5. 发明授权
    • Closed loop type fiber optic gyroscope for measuring absolute rotation
by delta serrodyne wave phase modulation
    • 闭环型光纤陀螺仪,用于通过三角波相位调制测量绝对旋转
    • US5781296A
    • 1998-07-14
    • US686365
    • 1996-07-23
    • Kanshi YamamotoShinichi KawadaTakeshi HojoYoshiyuki OkadaIsao Masuzawa
    • Kanshi YamamotoShinichi KawadaTakeshi HojoYoshiyuki OkadaIsao Masuzawa
    • G01C19/72G01C19/64
    • G01C19/726
    • A fiber optic gyro can overcome the defects encountered with conventional fiber optic gyros of phase-modulation method, closed-loop system with serrodyne modulation and digital modulation. A reference phase difference .DELTA..beta. and a ramp phase difference .sigma. are generated in an interference light intensity signal I by use of a triangular waveform, i.e., delta serrodyne waveform signal. The reference phase difference .DELTA..beta. is changed to constant values .DELTA..beta..sub.A and .DELTA..beta..sub.B whose absolute values are the same and whose signs are different at every times T.sub.A and T.sub.B. A phase x of the interference light intensity signal I becomes equal to x=.DELTA..theta.+.sigma.+.DELTA..beta.. The ramp phase difference .sigma. is controlled so as to satisfy .DELTA..theta.+.sigma.=0. Accordingly, at the stable point of the control loop, a Sagnac phase difference .DELTA..theta. is equal to the ramp phase difference .sigma.. Further, a phase x of the interference light intensity signal I does not contain the Sagnac phase difference .DELTA..theta., and hence x=.DELTA..beta.. Also, a fiber optic gyro can eliminate a bias, in particular, optically-generated bias. In a fiber optic gyro of phase-modulation method or delta serrodyne system, a phase controller is supplied with a phase control voltage signal V.sub.S of period T and a square wave signal V.sub.2 of period T for correcting an optical bias caused by an amplitude modulation generated by the phase control voltage signal V.sub.S in the added form. The square wave signal V.sub.2 has a constant magnitude H and is inverted in polarity at points in which the phase control voltage signal V.sub.S is maximized or minimized. The magnitude H and the polarity of the square wave signal V.sub.2 are selected such that an optical bias is minimized.
    • 光纤陀螺可以克服常规光纤陀螺相位调制方法,带有锯齿波调制和数字调制的闭环系统所遇到的缺陷。 在干涉光强度信号I中通过使用三角波形即三角波形波形信号产生参考相位差DELTAβ和斜坡相位差σ。 参考相位差DELTA beta被改变为恒定值DELTA beta A和DELTA beta B,其绝对值相同,每个符号TA和TB的符号不同。 干涉光强度信号I的相位x变为等于x =DELTAθ+ sigma +ΔTATA。 控制斜坡相位差σ以满足DELTAθ+ sigma = 0。 因此,在控制回路的稳定点,Sagnac相位差ΔTATA等于斜坡相位差σ。 此外,干涉光强度信号I的相位x不包含Sagnac相位差DELTAθ,因此x =ΔTATA。 此外,光纤陀螺仪可以消除偏压,特别是光学产生的偏压。 在相位调制方法或三角速度系统的光纤陀螺仪中,相位控制器被提供有周期T的相位控制电压信号VS和周期T的方波信号V2,用于校正由产生的幅度调制引起的光偏置 通过相位控制电压信号VS以相加的形式。 方波信号V2具有恒定的幅度H,并且在相位控制电压信号VS最大化或最小化的点处极性反转。 选择幅度H和方波信号V2的极性使得光偏置最小化。
    • 6. 发明授权
    • Gyro apparatus
    • 陀螺仪
    • US4471665A
    • 1984-09-18
    • US350254
    • 1982-02-19
    • Takeshi HojoShinichi Kawada
    • Takeshi HojoShinichi Kawada
    • G01C19/04G01C19/38G01C19/20
    • G01C19/38G01C19/04Y10T74/12Y10T74/1289
    • A gyro apparatus including a gyro case for housing a gyro therein, the spin axis of which is selected to be substantially horizontal, a container for accommodating therein the gyro case and containing a liquid within it, a first supporting device for supporting the gyro case within the container, a second supporting device for supporting the container in a manner that the container may have the freedom of three axes, and a vertical follow-up device for making the container to follow-up the gryo case around a gravity line, in which there is further provided a device in connection with the container for substantially changing the gap formed between the container containing the liquid and the gyro case from the outside of the container so as to adjust the displacement between the center of gravity of the gryo case and the center of viscous force caused by the liquid acting on the gyro case.
    • 一种陀螺仪装置,包括:陀螺仪壳体,用于将陀螺仪的旋转轴选择为大致水平的旋转壳体,用于容纳陀螺仪壳体并在其内容纳液体的容器,用于将陀螺仪壳体支撑在其内的第一支撑装置 容器,用于以容器可以具有三个轴的自由度的方式支撑容器的第二支撑装置和用于使容器围绕重力线跟随该格雷壳的垂直跟随装置,其中 还提供了一种与容器相关联的装置,用于从容器的外部基本上改变容纳液体的容器和陀螺仪壳体之间形成的间隙,以便调节冰箱的重心与 由液体作用在陀螺仪上的粘性力的中心。
    • 7. 发明授权
    • Erector
    • 演员
    • US4669323A
    • 1987-06-02
    • US696902
    • 1985-01-31
    • Takeshi HojoShinichi Kawada
    • Takeshi HojoShinichi Kawada
    • G01C19/52G01C19/30
    • G01C19/52Y10T74/1243Y10T74/1286
    • An erector for holding a spin axis of a gyro rotor in the vertical direction used in a gyroscopic horizon or gyro vertical which comprises a gyro casing incorporating therein a gyro rotor rotating at high speed, a spin axis of the gyro rotor being held substantially in the vertical direction, first supporting member for rotatably supporting the gryo casing around a first horizontal axis which is perpendicular to the spin axis and second supporting member for rotatably supporting the first supporting member around a second horizontal axis which is perpendicular to both the spin axis and the first horizontal axis is disclosed, which includes a base plate, a motor mounted on the base plate, a rotation receptacle container having an annular shape cavity and rotated at low speed by the motor, and liquid charged into the annular shape cavity of the rotation receptacle container, the base plate being mounted on the gyro casing such that the rotation axis of the rotation receptacle container and the spin axis of the gyro rotor become parallel to each other.
    • 一种用于在陀螺仪水平仪或陀螺仪垂直方向上保持陀螺仪转子的旋转轴的竖立装置,该陀螺仪转子包括在其中结合有高速旋转的陀螺仪转子的陀螺仪套管,陀螺仪转子的旋转轴基本保持在 垂直方向的第一支撑构件,用于围绕垂直于旋转轴线的第一水平轴线可旋转地支撑冰球壳体;以及第二支撑构件,用于可旋转地支撑第一支撑构件围绕垂直于旋转轴线和第二支撑构件的第二水平轴线 公开了第一水平轴,其包括基板,安装在基板上的电动机,具有环形形状空腔并由电动机低速旋转的旋转容器容器,以及装入旋转容器的环形空腔中的液体 容器,基板安装在陀螺仪壳体上,使得旋转容器容器的旋转轴线a 并且陀螺转子的旋转轴彼此平行。
    • 8. 发明申请
    • VARIABLE VALVE ACTUATION APPARATUS OF INTERNAL COMBUSTION ENGINE
    • 内燃机可变阀门执行装置
    • US20110265747A1
    • 2011-11-03
    • US13078023
    • 2011-04-01
    • Ryo TADOKOROAtsushi YamanakaShinichi Kawada
    • Ryo TADOKOROAtsushi YamanakaShinichi Kawada
    • F01L1/344B21D51/16
    • F01L1/344F01L2101/00F01L2105/00Y10T29/49405
    • In a variable valve actuation apparatus with a speed reducer between a timing sprocket and a camshaft for changing a phase of the camshaft relative to the sprocket, while reducing normal-rotation/reverse-rotation of an electric motor, the speed reducer includes an eccentric rotation member connected to an output shaft of the motor, an annular member connected to the sprocket, a plurality of rollers installed between an inner toothed portion of the annular member and an outer peripheral surface of the eccentric rotation member, and a cage connected to the camshaft for circumferentially partitioning the respective rollers, while permitting a radial displacement of each roller. Depending on a dimension of a clearance space between the eccentric rotation member and the annular member, a suitable one of a plurality of roller sets, each having a different outside diameter, is selected, and then the selected rollers are installed.
    • 在减速器在正时链轮和凸轮轴之间具有用于改变凸轮轴相对于链轮的相位的减速器的可变气门致动装置中,在减小电动机的正常旋转/反向旋转的同时,减速器包括偏心旋转 连接到电动机的输出轴的构件,连接到链轮的环形构件,安装在环形构件的内齿部分和偏心旋转构件的外周表面之间的多个辊以及连接到凸轮轴的保持架 用于周向地分隔相应的辊,同时允许每个辊的径向位移。 根据偏心旋转构件和环形构件之间的间隙的尺寸,选择每个具有不同外径的多个辊组中的合适的一个,然后安装所选择的辊。
    • 10. 发明授权
    • Viscous fluid coupling
    • 粘性流体耦合
    • US06474458B2
    • 2002-11-05
    • US09864214
    • 2001-05-25
    • Hirofumi KatohShinichi KawadaKenzi OhharaYasuo Fujita
    • Hirofumi KatohShinichi KawadaKenzi OhharaYasuo Fujita
    • F16D380
    • F16D35/023
    • A viscous fluid coupling includes a housing rotatably supported to a drive shaft of an engine. An operation plate set in the housing divides a space of the housing into a reservoir and an operation chamber. The operation plate has a communication hole communicating the reservoir and the operation chamber. A rotor fixed to the drive shaft is disposed in the operation chamber. A valve mechanism installed to the operation plate to close and open the communication hole according to ambient temperature of the housing. A driven wheel fixed to the housing is located between the operation plate and the rotor. A torque transmitting section includes a first annular projection concentrically formed on the driven wheel and a plurality of second annular projections concentrically formed on the rotor. The first annular projections are overlappedly adjacent to the second annular projections so as to establish fluid coupling therebetween through the viscous fluid.
    • 粘性流体联轴器包括可旋转地支撑在发动机的驱动轴上的壳体。 设置在壳体中的操作板将壳体的空间划分为储存器和操作室。 操作板具有连通储存器和操作室的连通孔。 固定在驱动轴上的转子设置在操作室中。 安装在操作板上的阀机构,根据外壳的环境温度关闭和打开连通孔。 固定到壳体的从动轮位于操作板和转子之间。 扭矩传递部分包括同心地形成在从动轮上的第一环形突起和同心地形成在转子上的多个第二环形突起。 第一环形突起与第二环形突起重叠地邻接,以便通过粘性流体在其间建立流体耦合。