摘要
针对扁球状火药颗粒1%～3%的含水量和0.1%的检测精度要求,采用变介质电容式传感器和自平衡交流电桥测量电路,研制了电容式火药水分检测系统。在分析影响含水量的温度、湿度、重量和电压幅值等因素的基础上,建立了偏最小二乘法多参数多元线性回归模型。经实验验证,该模型下的水分检测系统测量最大误差为0.12%,且最大误差出现在含水量为0.3%～1%之间,在含水量1%～3%之间误差均小于0.087%,满足0.1%的测量精度要求。
According to the requirement of moisture content（ 1%-3%） and detection precision（ 0. 1%） for the flat gunpowder,the capacitive sensor of varied dielectric was adopted,and the system of capacitive sensor for the moisture detection of gunpowder was developed. On the basis of the analysis for temperature,moisture,mass and voltage amplitude,the multi-linear regression model of partial least-squares was established. Results show that the maximal measurement error of moisture content（ 0. 3%- 1%） is 0. 12%,and the maximal error of moisture content（ 1%- 3%） is less than 0. 087%,which meeting the accuracy requirement for the moisture detection（ 0. 1%） of gunpowder.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2014年第3期417-421,共5页
Chinese Journal of Energetic Materials
基金
火炸药科研专项
关键词
信号与信息处理
电容式传感器
自平衡交流电桥
偏最小二乘法
多元线性回归
signal and information processing
capacitive sensor
self-balanced measuring circuit of alternating current（AC） bridge
partial least-squares
multi-linear regression model
