摘要
介绍了振弦传感器的精确数学模型,用数据证明该模型可用于初频会发生温度漂移的场所,不需要另作温漂修正;同时指出:该模型类似线性模型,若把当前的物理量值置为0,即能准确计算出以后的变化量。基于以上几点,应用该模型可快速准确地处理数据,实现了振弦仪器的智能化,显著提高了准确度。最后介绍了模型在初频可测或不可测的某些具体工程测量中的应用。
An accurate mathematical model for vibrating wire sensors is introduced. The model can be used in the condition that the original frequency varies with temperature drifting and needs no any correction to compensate this drifting. Meanwhile, it is indicated that the model is similar to the linear one, and the variable difference will be estimated precisely just by setting the initial value to zero. Based on the two basic characters mentioned above, intelligent instruments adopting this model can show the measured parameters in digital forms, and help to process the measured data quickly and precisely. As a conclusion, a difficult problem which has been pensented for a long time in vibrating wire instruments field is then solved. In the end, some practical applications of this model are provided with initial frequency either measurable or immeasurable.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第A02期5965-5969,共5页
Chinese Journal of Rock Mechanics and Engineering
关键词
数学分析
振弦传感器
数学模型
准确度
温漂修正
零漂修正
mathematical analysis
vibrating wire sensor
mathematical model
accuracy
correction of temperature drift
correction of zero point
