声表面波陀螺微弱信号接收电路研究  

Study on Weak Signal Receiving Circuit of SAW Gyroscope

作　　者：王学德[1] 江城[1] 周敏[1] 高璟[1] 

机构地区：[1]空军工程大学工程学院航空自动控制工程系,陕西西安710038

出　　处：《机械管理开发》2007年第1期13-14,17,共3页Mechanical Management and Development

摘　　要：依据声表面波陀螺基本原理的公式推导,声表面波陀螺的输出信号是频率电压信号。由于声表面波压电效应产生的电压信号非常微弱,一般放大不能分辨出信号电压和噪声电压。因而利用锁相放大的方法将此微弱电压信号从噪声信号中提取放大,解决了声表面波陀螺的信号放大问题。The output signal of SAW gyroscope is a voltage signal,concluded from the principle of SAW gyroscope and the principle formula educed.Generally,because the output voltage signal is very weak,the signal voltage and the noise voltage can＇t be distinguished.This paper makes use of the method of lock-in amplifying to pick up the weak signal from noise.The problem of the output signal amplification of SAW gyroscope is solved.

关 键 词：声表面波陀螺 微弱电压信号 接收电路 锁相放大 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]