摘要
介绍了差动变压器式传感器的结构和输出特性,详细分析了其零残电压产生的原因,以及对测量系统非线性和灵敏度的影响。介绍了一种补偿电路,同时进行了实验。结果表明,经过补偿,零残电压从65.6mV减小为15.6mV,系统灵敏度由1360.39×10–3V/mm提高到1386.69×10–3V/mm,非线性误差由2.04%减小为0.49%。表明给出的补偿电路简单有效,起到了很好的补偿作用。
The structure and output quality of differential transformer sensor were introduced simply. The producing reason of residual voltage at zero point and its affection to the nonlinear quality and sensitivity of measurement system were analyzed extensively. A compensation circuit was proposed and then experiments were made. The experimental results show that the residual voltage is decreased form 65.6 mV to 15.6 mV, the sensitivity of system is increased from 1 360.39×10^-3 V/mm to 1 386.69×10^-3 V/mm, the nonlinear error is decreased from 2.04% to 0.49%. So the compensation circuit designed is simple and effective and desirable effect is obtained.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2006年第7期45-47,51,共4页
Electronic Components And Materials
关键词
电子技术
差动变压器
传感器
零残电压
补偿
非线性误差
灵敏度
electronic technology
differential transformer
sensor
residual voltage at zero point
compensation
nonlinear error
sensitivity
