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A method for optimizing the on-time of a Coriolis gyroscope and a Coriolis gyroscope suitable for this

An on-time, gyroscope technology, used in gyroscope/steering sensing devices, gyro effect for speed measurement, instruments, etc., to solve problems such as non-compliance with Coriolis gyroscopes, wrong "values", etc.

Active Publication Date: 2019-05-28
NORSROP GRUMAN LITEF GMBKH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the amplitude of the excitation has not yet reached its steady-state value within the on-time, the output signal from the Coriolis gyroscope may be "wrong" not meeting the required specifications of the Coriolis gyroscope value

Method used

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  • A method for optimizing the on-time of a Coriolis gyroscope and a Coriolis gyroscope suitable for this
  • A method for optimizing the on-time of a Coriolis gyroscope and a Coriolis gyroscope suitable for this
  • A method for optimizing the on-time of a Coriolis gyroscope and a Coriolis gyroscope suitable for this

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Embodiment Construction

[0022] Generally, in a Coriolis gyroscope, the scaling factor between the Coriolis force and the rotation rate is called the scale factor, which is proportional to the amplitude of the excitation. Here apply:

[0023]

[0024] where the following formula applies to the derivative of the displacement x of the excitation:

[0025]

[0026] Among them, F C is the Coriolis force, m is the mass of the detection vibrator, χ is the displacement of the excitation, Ω is the angular velocity or rotation rate (that is, the measured variable), A(t) is the amplitude of the displacement of the excitation and ω is the displacement of the excitation An operating frequency, which advantageously corresponds to the resonance frequency of the excitation oscillator.

[0027] Here, the excitation of the Coriolis gyroscope is the excited vibration of the mass system of the Coriolis gyroscope parallel to the first axis (x-axis). The mass m of the detection vibrator is the mass of the mass sy...

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Abstract

The invention relates to a method for optimizing the on-time of a Coriolis gyroscope (1) having a mass system (100) capable of being excited parallel to a first axis (x) of the Coriolis gyroscope excitation of an instrument (1), wherein the displacement of the mass system along a second axis (y) perpendicular to the first axis (x) based on the Coriolis force can be obtained by means of the output of the Coriolis gyroscope Signal checking, the method includes detecting the amplitude (A) of the excitation of the Coriolis gyroscope at a defined time point, detecting the output signal (S) of the Coriolis gyroscope at a defined time point (ti) , and the Coriolis gyroscope is generated by multiplying the measured output signal (S) by the quotient of the steady-state amplitude (A0) of the excitation of the Coriolis gyroscope and the measured amplitude (A) The normalized output signal of (S0).

Description

technical field [0001] The invention relates to a method for optimizing the on-time of a Coriolis gyroscope and a Coriolis gyroscope suitable therefor. Background technique [0002] Coriolis gyroscopes (vibrating gyroscopes, vibrating gyroscopes, rotation rate sensors) include a single-piece, but usually multi-piece, mass system that vibrates. Furthermore, in order to operate the Coriolis gyroscope, a first mode of vibration of the mass system is excited (excitation). If the Coriolis gyroscope rotates on its sensitive axis, the resulting Coriolis force excites a second vibration mode of the mass system, which is detected directly or indirectly, where the mapping of the Read signal for the second vibration mode (read vibration or detect vibration). The read signal is analyzed in terms of the change in amplitude, which is the value of the rotation rate on the Coriolis gyroscope. In a Coriolis gyroscope based on a closed-loop system, the amplitude of the read vibration is co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C19/5726G01C25/00
CPCG01C19/5726G01C25/005
Inventor 沃尔弗拉姆·盖格
Owner NORSROP GRUMAN LITEF GMBKH