摘要
通过对5种规格下具有代表性型号的真空荧光显示器(VFD)进行灯丝电阻率随灯丝温度变化的试验研究,实测出每个步长电压下的灯丝电流数据,采用最小二乘法对灯丝电阻率和灯丝温度进行线性拟合,给出灯丝电阻率随灯丝温度变化的试验曲线,得到灯丝电阻率随灯丝温度变化的计算公式,并自行开发便于工程应用的计算软件.研究结果表明,随着灯丝温度的升高,灯丝电阻率呈现良好的线性上升趋势,灯丝电阻率的线性拟合公式精度很高,便于在VFD设计之初无需通过试验测量就可以确定灯丝温度和灯丝电流.
The experimental study on the relationship between filament resistivity and filament temperature for vacuum fluorescent display （VFD） were carried out by selecting representative types under five specification and measuring the data of filament current at each step voltage. The statistic and analysis on filament current data were achieved by using Least square method to fit linear relationship between filament temperature and filament resistivity, plotting their test curves and fitting their linear formulas. Furthermore, the software was self - developed for engineering application. The research results showed that filament resistivity had a good linearly rising trend with filament temperature increase, and linear fitting formulas had high accuracy. It would be very convenient to determine filament temperature and filament current without experimental measurement at the beginning of VFD design.
出处
《安徽大学学报（自然科学版）》
CAS
北大核心
2009年第2期52-57,共6页
Journal of Anhui University(Natural Science Edition)
基金
上海市教委一般科研基金资助项目(06LZ012)
上海市教委2007年度重点课程建设基金资助项目(20075302)
上海市重点科技攻关计划基金资助项目(071605125)
关键词
真空荧光显示器
灯丝温度
灯丝电阻率
最小二乘法
vacuum fluorescent display（VFD）
filament temperature
filament resistivity
least square method （ LSM ）
