振弦式传感器测量死区机理分析与性能优化方法研究  

Analysis on the dead measuring areas of vibrating wire sensors and study on optimization methods

作　　者：马笑笑[1] 毛良明 田宗军[1] 

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]基康仪器(北京)有限公司,北京100080

出　　处：《传感器世界》2012年第9期12-15,共4页Sensor World

摘　　要：针对振弦式传感器普遍存在测量死区的现象,以大量程位移计为研究对象,通过ANSYS分析手段、材料力学和振动学理论,对振弦和弹簧的振动特性和振动能量进行机理分析,通过不断的参数优化,获得了令人满意的理论分析结果,最终为提高传感器的可靠性和测量精度提供了优化设计方案。经过对比实验测试验证,由优化设计方案试制的新传感器的性能指标有很大提高,获得了良好的设计改进效果。The dead measuring areas exist widely when vibrating wire sensors are working. To solve this problem, vibration characteristics and energy of vibration wires and springs are researched based on ANSYS, mechanics of materials and vibration theory. Finite element analysis tooI-ANSYS is used for parameter optimization and the satisfactory results of theoretical analysis are obtained to improve reliability and measurement precision of sensors. The contrast experiments verify that property indexes of new sensors with optimized design are much better than those with original design, which confirms the positive effects of the optimization.

关 键 词：振弦 弹簧 测量死区 振动能量 减振杆 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]