差动变压器精密绝对值检波电路的研究

Precision absolute value detection circuit of LVDT

检波电路是差动变压器位移传感器调理电路中的关键部分,在分析常用全波整流电路缺点的基础上,设计了精密绝对值检波电路,并成功应用于传感器调理电路中.电路仿真和实验结果表明,利用精密绝对值电路可以提高差动变压器的线性度和稳定度.

Detection circuit is the key to conditioning circuits of linear variable differential transformer displacement sensor. On the basis of the analysis of disadvantages of the traditional rectification circuit, precision absolute value detection circuit is designed. Circuit simulation and experimental results show that, stability and linearity of LVDT are improved by using precise absolute circuit.