A method for stabilizing an accelerometer

A technology for stabilization processing and accelerometers, applied in the direction of measuring acceleration, velocity/acceleration/shock measurement, measuring devices, etc., can solve problems such as adverse effects of accelerometer scale factor stability, substandard products, and unfavorable batch production , to achieve rapid stabilization treatment, prevent excessive magnetic field, and improve stability

Active Publication Date: 2015-09-02
航天科工惯性技术有限公司
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  • Description
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AI Technical Summary

Problems solved by technology

However, the magnetic field generated by manually rotating the knob of the AC voltage regulator is not very accurate, and it depends entirely on the operator's experience. Moreover, different accelerometers have different responses to the applied magnetic field. Often, the magnetic field is too large or too small, which will affect the The stability of the accelerometer scale factor will be adversely affected, even resulting in defective products
Moreover, the efficiency of manual processing is also low, which is not conducive to batch production.

Method used

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  • A method for stabilizing an accelerometer
  • A method for stabilizing an accelerometer
  • A method for stabilizing an accelerometer

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Embodiment Construction

[0022] The present invention is introduced below in conjunction with accompanying drawing and example:

[0023] figure 2 A schematic diagram of the circuit connections for the detection method is shown. Accelerometer 13 is connected with test circuit 10, and test circuit 10 is connected with computer control system 11; Demagnetization coil 9 is connected with AC voltage regulator 12, and AC voltage regulator 12 is also connected with computer control system 11.

[0024] Among them, the AC voltage regulator 12 is used to generate an alternating voltage, which acts on the demagnetization coil 9, and the demagnetization coil 9 can generate an alternating magnetic field, which can be detected by the accelerometer test circuit 10 installed on the tooling 8. The output of the accelerometer 13, the computer control system 11 controls the output of the AC voltage regulator 12 through the output of the accelerometer 13 measured by the accelerometer test circuit 10, so that an appropr...

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Abstract

The invention discloses a method for stabilizing an accelerometer. The method comprises the following steps of: installing the accelerometer on an accelerometer installing fixture at a +1g (or-1g) position, putting the fixture in a demagnetizing coil, controlling a test circuit by a computer control system to electrify the accelerometer, recording the output of the accelerometer, and controlling an alternating-current voltage regulator through the computer control system to gradually increase the output of an alternating-current voltage, namely gradually increasing the intensity of the alternating-current magnetic field in the demagnetizing coil; and when the output of the accelerometer is increased to a predetermined value, automatically controlling the alternating-current voltage regulator by the computer control system to stop working, and completing stabilization. By using the method, the accelerometer can be accurately, conveniently and quickly stabilized in a computer control mode, the stability of accelerometer scale factors is improved, and the rejection rate is reduced.

Description

technical field [0001] The invention relates to a method for stabilizing an accelerometer, in particular to a method for stabilizing a quartz flexible accelerometer. Background technique [0002] The quartz flex accelerometer is a force balance accelerometer designed to measure constant and low frequency accelerations acting along its input axis. The quartz flexible accelerometer is composed of two parts: the meter head and the servo circuit. The schematic diagram of its composition structure and working circuit connection is as follows: figure 1 shown. The meter head mainly consists of a differential capacitance sensor 1, a detection mass pendulum 2, an electromagnetic torquer 3, and a flexible flat bridge 4, wherein the electromagnetic torquer 3 contains a permanent magnet 6 for generating a magnetic field. When there is an acceleration a along the input axis of the accelerometer, the pendulum plate 2 deflects slightly, and the capacitance value of the differential capac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P15/125
Inventor 张兰顾文华杨守安刘英许中生姜福涛
Owner 航天科工惯性技术有限公司
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