摘要
在冰的力学性能测试中引用了传感技术 ,考虑冰力学试验环境、条件、测试方法的特殊要求 ,专门设计、研制了试验所需要的各种类型传感器 ,为进一步完善冰力学试验奠定了基础 .论述了传感器的工作原理及构造 ;分析了传感器在实际应用中的非线性误差 .通过误差分析得出 :弓形位移传感器灵敏度与被测位移大小成反比 ,被测位移小 ,灵敏度近似为常数 ,被测位移过大时 ,随着被测位移的增加灵敏度下降 ;悬臂梁式位移传感器 ,被测位移愈大 ,失真就愈大 ,但增大导杆长度和梁的长度 ,可以减小失真 .
The transducer technology is used in ice mechanics tests and various kinds of transducers are designed and made to fit for special demands of ice mechanics tests. All that prepares for ice tests improvement. Working principle of transducers is explained and the non linear error is discussed. According to the error analysis, the bow shaped displacement transducer′s sensitivity is inversely proportional to the measured displacement. The sensitivity approximates to a constant for a small measured displacement, but it decreases with the measured displacement recreating for large measured displacement. In addition, the bigger the measured displacement is, the bigger the error of the cantilever beam type of displacement transducer is, but the error can be decreased by adding the length of the leading bar and the length of the beam.
出处
《大连理工大学学报》
CAS
CSCD
北大核心
2000年第3期285-288,共4页
Journal of Dalian University of Technology
基金
国家自然科学基金资助项目!( 19172 0 10 )
