METHOD FOR CORRECTING GYROSCOPE DEMODULATION PHASE DRIFT

    公开(公告)号:EP4148382A1

    公开(公告)日:2023-03-15

    申请号:EP22191021.9

    申请日:2022-08-18

    IPC分类号: G01C19/5649 G01C25/00

    摘要: A gyroscopic sensor unit (101) detects a phase drift between a demodulated output signal and a demodulation signal during output of a quadrature test signal. A delay calculator (116) detects the phase drift based on changes in the demodulated output signal during application of the quadrature test signal. A delay compensation circuit (118) compensates for the phase drift by delaying the demodulation signal by the phase drift value.

    Vibration gyroscope and method for adjusting vibration-gyroscope characteristics
    5.
    发明公开
    Vibration gyroscope and method for adjusting vibration-gyroscope characteristics 失效
    Vibrationskreisel und Verfahren zur Einstellung seiner Eigenschaften

    公开(公告)号:EP0777105A3

    公开(公告)日:1998-07-01

    申请号:EP96118723

    申请日:1996-11-21

    IPC分类号: G01C19/56 G01C19/5649

    CPC分类号: G01C19/5649

    摘要: A vibration gyroscope (10) includes a vibrator (12). The vibrator (12) has a vibration member (14) formed in a regular triangular prism shape. On side faces of the vibration member (14), three piezoelectric elements (16a, 16b, 16c) are formed, respectively. Two of the piezoelectric elements (16a, 16b) are connected to the input terminal of an oscillation circuit (20) through resistors (18a, 18b) which serve as the loads of the two piezoelectric elements (16a, 16b), respectively. The output terminal of the oscillation circuit (20) is connected to the other piezoelectric element (16c). The former piezoelectric elements (16a, 16b) are also connected to the non-inverting input terminal and the inverting input terminal of a differential amplifier circuit (22), respectively. By changing the impedances of the resistors (18a, 18b), the characteristics of the vibration gyroscope (10) is adjusted.

    摘要翻译: 振动陀螺仪(10)包括振动器(12)。 振动器(12)具有形成为规则三角棱柱形状的振动部件(14)。 在振动部件(14)的侧面分别形成有三个压电元件(16a,16b,16c)。 两个压电元件(16a,16b)分别通过用作两个压电元件(16a,16b)的负载的电阻(18a,18b)连接到振荡电路(20)的输入端子。 振荡电路(20)的输出端子连接到另一个压电元件(16c)。 前述压电元件(16a,16b)也分别连接到差分放大器电路(22)的非反相输入端子和反相输入端子。 通过改变电阻(18a,18b)的阻抗,调节振动陀螺仪(10)的特性。

    METHOD FOR CALIBRATING A VIBRATORY GYROSCOPE
    10.
    发明公开
    METHOD FOR CALIBRATING A VIBRATORY GYROSCOPE 审中-公开
    校准振动陀螺仪的方法

    公开(公告)号:EP3169976A1

    公开(公告)日:2017-05-24

    申请号:EP15736298.9

    申请日:2015-07-15

    申请人: Innalabs Limited

    摘要: The present invention is concerned with a method of calibrating a vibrating gyroscope. The method comprises exciting a vibration along an excitation axis of a resonant structure wherein the excitation axis is positioned at a first angular position, sensing the vibration of the resonant structure on a first sensing axis of the resonant structure while the excitation axis is positioned at the first angular position, generating a first sensing signal indicative of the sensed vibration of the resonant structure on the first sensing axis, rotating the excitation axis in a continuous manner around the resonant structure to a second angular position, sensing the vibration of the resonant structure on a second sensing axis of the resonant structure while the excitation axis is positioned at the second angular position, generating a second sensing signal indicative of the sensed vibration of the resonant structure on the second sensing axis and adding the first sensing signal to the second sensing signal in order to derive a bias of the gyroscope.

    摘要翻译: 本发明涉及一种校准振动陀螺仪的方法。 该方法包括激励沿共振结构的激励轴的振动,其中激励轴位于第一角位置,在激励轴位于第一角位置时感测共振结构的第一感测轴上的共振结构的振动, 产生第一感测信号,所述第一感测信号指示所述第一感测轴上的所述谐振结构的所述感测振动,以所述谐振结构周围的所述连续方式将所述激励轴旋转到第二角度位置,感测所述谐振结构的振动 所述谐振结构的第二感测轴线,同时所述激励轴线位于所述第二角度位置处,产生第二感测信号,所述第二感测信号指示在所述第二感测轴线上感测到的所述谐振结构的振动,并且将所述第一感测信号添加到所述第二感测信号 以导出陀螺仪的偏差。