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High-temperature quartz flexible accelerometer servo circuit

A technology of accelerometer and servo circuit, applied in the direction of measuring acceleration, using inertial force for acceleration measurement, speed/acceleration/impact measurement, etc., can solve the problems of no integrated digital output circuit, low reliability, large volume, etc., and achieve Improved power drive capability, low cost, and simple operation

Pending Publication Date: 2020-04-17
QINGDAO AEROSPACE SEMICON RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problems of low reliability and high failure rate of accelerometer servo circuit in high temperature environment; solves the problems of no integrated digital output circuit in the market and large volume.

Method used

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  • High-temperature quartz flexible accelerometer servo circuit
  • High-temperature quartz flexible accelerometer servo circuit
  • High-temperature quartz flexible accelerometer servo circuit

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Embodiment Construction

[0049] Such as Figure 1-4 , the present invention includes a closed-loop servo amplifier and meter assembly;

[0050] The meter head assembly includes torquer assembly and differential capacitor assembly;

[0051] The torque device assembly includes a torque sensor L1;

[0052] The servo amplifier includes a pre-transformation circuit U1, a dual-channel voltage regulator circuit for supplying power to the pre-transformation circuit U1, a feedback resistance-capacitance network, and a transconductance compensation amplifier U4;

[0053] The pre-conversion circuit U1 includes an operational amplifier, a current integrator, a differential capacitance detector for detecting capacitance differences, and a triangular wave generator; the triangular wave generator includes an output circuit, a constant current source, and a bias circuit;

[0054] The triangular wave generator outputs the triangular wave signal through the capacitance detector, and integrates through the current int...

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PUM

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Abstract

The invention relates to a high-temperature quartz flexible accelerometer servo circuit. The servo circuit comprises a servo amplifier and a gauge outfit assembly which form a closed loop, and the gauge outfit assembly comprises a torquer assembly and a differential capacitor assembly. The torquer assembly comprises a torque sensor L1; the servo amplifier comprises a front conversion circuit U1, atwo-way voltage stabilizing circuit used for supplying power to the front conversion circuit U1, a feedback resistance-capacitance network and a transconductance compensation amplifier U4. The frontconversion circuit U1 comprises an operational amplifier, a current integrator, a differential capacitance detector used for detecting capacitance difference, and a triangular wave generator. The triangular wave generator comprises an output circuit, a constant current source and a bias circuit. The servo circuit is reasonable in design, compact in structure and convenient to use.

Description

technical field [0001] The invention relates to a high-temperature quartz flexible accelerometer servo circuit. The invention belongs to the technical field of sensor manufacturing, specifically an accelerometer servo circuit with integrated A / D conversion, miniaturization, high-temperature 185°C environmental requirements and high reliability. Background technique [0002] Quartz flexible accelerometer is one of the key devices in the inertial navigation system, and it is a high-precision sensor for measuring linear acceleration. Its importance has been more and more understood by people. The inertial navigation system with the accelerometer as the core is not interfered by radio waves, nor affected by climate and magnetic variation, and has the advantages of simple structure, small size, high precision and sensitivity, good stability, low power consumption, Low cost and other characteristics, not only can be widely used in aerospace, aviation, inertial navigation and other...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P15/08H02H7/12
CPCG01P15/0802H02H7/1213
Inventor 刘本勇安磊孙华涛高尚
Owner QINGDAO AEROSPACE SEMICON RES INST
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