摘要
设计了一种新的数控电阻网络结构。此结构能够降低由于继电器接触电阻不稳定特性的影响,实现高精度可变电阻输出,达到反应堆铂电阻测温仪表的精度等级要求。分析了在采用二进制电阻权重序列的情况下,由于电阻的初始误差导致的失配误差,并提出了失配误差的计算公式和不失配条件。新电阻结构具有高精度和高稳定性的特点,能够用于反应堆铂电阻测温仪表的设计、测试和校准工作。
Design a new structure of digitally controlled resistance network. The resistance network can output a high resolution resistance with the effect of reducing the unstable characteristic of relay contacts resistance, and meet the accuracy requirement of the platinum-resistance thermometry in reactors. the mismatch error which is led by the resistor＇s initial error in the case of using the binary resistor weight sequence. Error calculation formula and mismatch condition is given. High resolution and high stability characteristics of resistance source can be used to design, test and calibrate the reactors＇ platinum-resistance thermometry.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2016年第5期68-70,共3页
Nuclear Power Engineering
关键词
反应堆铂电阻测温仪表
数控电阻
蒙特卡洛方法
Reactors platinum-resistance thermometry
Digitally controlled resistance
Monte Carlo method
