A method of reduce zeroshift of piezoelectric accelerometers 减小压电式加速度计零漂的一种方法
Correction of zero drift 零漂改正
Owing to weak output signals integrated amplifier is designed , which is characteristics of shorter wires , higher input impedance , higher common mode rejection ratio and series mode rejection ratio , smaller zero shift and temperature shift 由于输出信号微弱,采用短线路传输,高输入阻抗,共模抑制比和串模抑制比高,温漂和零漂小的集成运放电路。
Under the pattern of cyber - education , open laboratories are becoming inseparable parts which still are weak in the process of teaching . as for electric experiment category , there are many problems in common , for instance , less safe in equipment systems , less functional in instrument protection , thus forcing students to spend large quantity of time reviewing , recording , and analyzing data , while students do experiment only with less time , which have negative effect on purpose of experiment , at the same time , this does not reflect benefits that internet brings us 然而当前大多数高校的实验教学环节还比较薄弱,其中对电类实验来说存在诸多共性问题,比如:实验系统安全性差,仪表保护功能少,导致实验器材损坏严重:仪表性能不稳定,零漂、温漂现象严重,元器件线性度校正不够,仪表测量精度差;学生做一次实验要花大量时间记录数据、整理数据、写实验报告,真正用在做实验上的时间并不多,从而使实验效率大大下降;同时也没有充分利用校园网所带来的便利和信息共享及互动的功能。
Thirdly , in the environment of labview , several kinds of vis used for sensor signal test are designed , including wave generation , time domain measurement , filter disposal , frequency analysis , etc . after that , wavelet analysis in the application of one - dimensional signal de - noise is studied , threshold and translation invariance wavelet de - noise are realized , and wavelet de - noise vi for zero drift signal of the fiber optic gyro in fcs is designed using labview 接着,在labview环境下开发了多种用于传感器信号测试的虚拟仪器,具有波形发生、时域测量、滤波处理、频谱分析等多种功能。随后,研究了小波分析在一维信号消噪中的应用,实现了labview环境下的阈值法和平移不变量法小波消噪,并利用labview设计了飞控系统中光纤陀螺零漂信号的小波消噪仪。
零: zero zero sign; nought漂: fail; end in failure零漂移: zero drift; zero shift零漂浮, 零移: zero-drift零漂改正: correction of zero drift零漂检查: zero drift test零漂移补偿: zero drift compensation零漂移位置: zero-deviation situation供给压力零漂: subcarrier pressure null shift; supply pressure null shift回油压力零漂: return pressure null shift重力仪零漂改正: gravimeter drift correction零偏转,无偏转: zero deflection零偏置保持: zerobias retentionn零偏置: zero bias; zero offset零偏移法: zero-deflection method零偏移: zero offset