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    • 5. 发明授权
    • Gyro apparatus
    • 陀螺仪
    • US4708024A
    • 1987-11-24
    • US871876
    • 1986-06-09
    • Takeshi HojoTakafumi Nakaishi
    • Takeshi HojoTakafumi Nakaishi
    • G01C19/30G01C19/38
    • G01C19/38G01C19/30Y10T74/1254Y10T74/1289
    • A gyro apparatus comprising a gyro casing incorporating therein a gyro the spin axis of which is made substantially horizontal, a supporting apparatus for supporting the gyro casing with a freedom of three axes, a north-seeking apparatus for giving a north-seeking action to the gyro, a follow-up ring having a follow-up shaft which follows the gyro casing around its substantially vertical axis, a binnacle for supporting the follow-up shaft, a servo motor for rotating the follow-up shaft and a slip ring for supplying a power to the gyro and the like through the follow-up shaft, in which the follow-up ring is formed as a fork-shape and supported to the binnacle in a canti-lever fashion, the follow-up shaft is rotatably supported to the binnacle by one thin-type ball bearing having a large diameter and one bearing having a small diameter, the follow-up shaft is fixedly provided with a rotor of a pancake-type servo motor of a direct drive system, a stator of the servo motor is attached to the binnacle at the position corresponding to the rotor and a slip ring is attached to the binnacle at the outer periphery of the servo motor.
    • 一种陀螺仪装置,包括:陀螺仪壳体,其内装有旋转轴,旋转轴的旋转轴线基本上水平;支撑装置,用于支撑具有三轴自由度的陀螺仪套管;用于向 陀螺仪,具有跟随陀螺仪壳体围绕其基本垂直轴线的跟随轴的跟随环,用于支撑跟随轴的后支撑,用于使跟随轴旋转的伺服电动机和用于供应的滑环 通过随动轴对陀螺仪等施加动力,其中随动环形成为叉状,并且以杠杆方式支撑在二进制支架上,随动轴被可旋转地支撑到 通过一个具有大直径的薄型球轴承和一个具有小直径的轴承,所述后跟轴固定地设置有直接驱动系统的煎饼型伺服电动机的转子,伺服的定子 电机连接到t 在与转子相对应的位置处的液压缸和滑环附接到伺服电动机的外周边的立体声。
    • 7. 发明授权
    • Gyro apparatus
    • 陀螺仪
    • US4791727A
    • 1988-12-20
    • US110427
    • 1987-10-20
    • Takeshi HojoTakafumi NakaishiMikio Morohoshi
    • Takeshi HojoTakafumi NakaishiMikio Morohoshi
    • G01C19/38
    • G01C19/38
    • In a gyro apparatus comprising a binnacle, a gyro the spin axis of which is made substantially horizontal, a supporting apparatus for supporting the gyro from the binnacle with a freedom of three axes, a north-seeking apparatus for giving a north-seeking action to the gyro, a follow-up ring following up the gyro around its vertical axis, a servo motor for rotating the follow-up ring by a deviation singal around the vertical axis of teh gyro relative to the follow-up ring and a transmiting apparatus for transmitting an azimuth angle of the spin axis relative to the binnacle to the outside, the gyro apparatus is characterized in that the transmitting apparatus is formed of a digital encoder having a reference angular position transmitting device and a first counter apparatus being made operable by an output signal of the encoder.
    • 在一种陀螺仪装置中,该陀螺装置包括一个陀螺仪,其旋转轴线基本上是水平的陀螺仪,用于以三轴自由的方式支撑陀螺仪的支撑装置,用于向北方寻求动作的寻北装置 陀螺仪,围绕其纵轴跟随陀螺仪的跟随环,用于使跟随环绕相对于跟随环的垂直轴线偏离旋转的伺服电机,以及用于 将旋转轴相对于二进瓶的方位角传递到外部,陀螺仪装置的特征在于,发送装置由数字编码器形成,该数字编码器具有参考角位置发送装置和第一计数器装置, 编码器的信号。
    • 9. 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。
    • 10. 发明授权
    • Antenna directing apparatus
    • 天线导向装置
    • US5517204A
    • 1996-05-14
    • US27224
    • 1993-03-05
    • Takao MurakoshiTakeshi HojoKanshi YamamotoKazuteru SatoKoichi UmenoYoshinori KamiyaKazuya AraiMutumi TakahashiYasuke Kosai
    • Takao MurakoshiTakeshi HojoKanshi YamamotoKazuteru SatoKoichi UmenoYoshinori KamiyaKazuya AraiMutumi TakahashiYasuke Kosai
    • H01Q1/18H01Q3/00
    • H01Q1/18Y10T74/1221
    • An antenna having a central axis is supported on a supporting member which in turn is supported on an azimuth gimbal. The antenna and the supporting member are rotatable around an elevation axis perpendicular to the central axis gimbal is supported on a base and is rotatable around an azimuth axis perpendicular to the elevation axis. A first gyro having an input axis parallel to the elevation axis is secured to the supporting member, and a second gyro having an input axis perpendicular to both the central axis and the elevation angle axis is secured to the supporting member. An accelerometer is provided for outputting a signal representative of an inclination angle of the central axis relative to a horizontal plane. An azimuth transmitter is provided for outputting a signal representative of a rotation angle of the azimuth gimbal around the azimuth axis. The difference between a signal corresponding to the altitude angle of the satellite and the signal of the accelerometer is fed to the torquer of the first gyro, while the output signal of the azimuth transmitter and the signals corresponding to the ship's heading azimuth and a satellite azimuth angle are fed to a torquer of the second gyro to thereby direct the central axis of the antenna to the satellite.
    • 具有中心轴的天线被支撑在支撑构件上,支撑构件又被支撑在方位平衡杆上。 天线和支撑构件可以围绕垂直于中心轴的仰角轴线旋转,万向架被支撑在基座上并且可围绕垂直于仰角的方位角旋转。 具有平行于仰角的输入轴的第一陀螺仪被固定到支撑构件,并且具有垂直于中心轴和仰角轴线的输入轴的第二陀螺仪被固定到支撑构件。 提供加速度计用于输出表示中心轴线相对于水平面的倾斜角度的信号。 提供方位发射器用于输出表示方位角方位角周围的方位角的旋转角度的信号。 对应于卫星的高度角的信号和加速度计的信号之间的差异被馈送到第一陀螺仪的扭矩,而方位角发射机的输出信号和对应于船的航向方位角的信号和卫星方位角 角度被馈送到第二陀螺仪的绞盘,从而将天线的中心轴引导到卫星。