Digitized drive control integrated circuit of angular velocity sensor

Abstract

The invention discloses a digitized drive control integrated circuit of an angular velocity sensor. The digitized drive control integrated circuit comprises a trans-impedance amplifier, a comparator,an analog-digital converter, a digital detector, a digital PI controller, a digital nonlinear multiplying unit, a digital-analog converter, an either-or multiplexer and a digital control reference voltage source Vref. The drive control circuit is used for driving the angular velocity sensor by adopting the manners of digital square wave oscillation starting and digital sine wave vibration maintaining, and a whole drive circuit configuration enables an input voltage range, noise performance, construction time, a distortion factor and an integration level of the circuit to be obviously improved.Under the situation that all aspects of properties of the drive circuit are improved to some extent, the area of the drive circuit is shrunk by a large margin, the problem that oscillation cannot bestarted due to insufficient accuracy of the analog-digital converter and the delay problem of a digital circuit group is solved, and the digitized drive control integrated circuit is suitable for a drive circuit of a high-precision high-stability minimal-type angular velocity sensor.

Description

technical field [0001] The invention belongs to the technical field of sensors and relates to a digital drive control integrated circuit of an angular velocity sensor with a new structure. Background technique [0002] Angular velocity sensor is one of the important sensors in aerospace, national defense and industrial fields, and its application in aircraft and weapon systems has become increasingly widespread. In recent years, the research on angular velocity sensors in our country has also become more and more mature. With the continuous improvement of the performance of aircraft and weapon systems, the requirements for the performance of angular velocity sensors have also been continuously improved. The drive control circuit has low noise, high stability, and low Distortion and high integration are the prerequisites to ensure the high performance of angular velocity sensor and its wide range of applications. [0003] The design of the drive circuit of the angular veloci...

AI Technical Summary

Problems solved by technology

Moreover, when the performance of the driving circuit has been improved in all aspects, its area is greatly reduced, which solves the problem of inability to start oscillation due to insufficient precision of the analog-to-digital converter and the delay of the digital circuit group at the initial stage of power-on. Drive circuit for ultra-miniaturized angular velocity sensor with high precision and stability

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