巢湖学院学报Issue(6)：76-80,5.
差动变压器的温度补偿方法研究
RESEARCH ON TEMPERATURE COMPENSATION METHOD OF LVDT
摘要
Abstract
There is a nonlinear error and temperature drift between the conditioning circuitoutput value and the input displace-ment in the linear variable differential transformer(LVDT). It is difficult to design and product transformers with high precision by using traditional methods. A MCU is embedded in the conditioning circuit, and the temperature compensation algorithm is established through the sensor calibration data in order to improve the design precision of the sensor. The algorithm is tempera-ture compensation algorithm using 25℃ as reference and temperature compensation algorithm by using piecewise linear inter-polation. Experimental results show that the effect of algorithm using piecewise linear interpolation is more obvious. The lineari-ty is increased from 0.5% at room temperature to 0.12% in the whole temperature range;the thermal sensitivity is increased from 1600ppm/℃to 70ppm/℃and this method has a good application prospect.关键词
差动变压器/温度补偿/分段线性插值/非线性校正/ADμC845Key words
linear variable differential transformer (LVDT)/temperature compensation/piecewise linear interpolation/nonlin-ear compensation/ADμC845分类
信息技术与安全科学引用本文复制引用
柏受军,王其昭,姚立立,魏宇丹..差动变压器的温度补偿方法研究[J].巢湖学院学报,2013,(6):76-80,5.基金项目
安徽高校省级自然科学研究基金资助项目（项目编号：KJ2011B011）；安徽工程大学大学生创新创业训练计划资助 （）
