【作者】 范彦平； 吉小军； 蔡萍； 韩韬； 王骥；

【Author】 FAN Yang-ping~1,JI Xiao-jun~1,CAI Ping~1,HAN Tao~1,WANG Ji~2 (1.School of Electronic Information and Electrical Engineering,Shanghai Jiaotong University,Shanghai 200240,China; 2.The Faculty of Mechanical Engineering and Mechanics,Ningbo University,Ningbo,315211,China)

【机构】 上海交通大学 电子信息与电气工程学院； 宁波大学 机械工程与力学学院；

【摘要】 扭矩测试是各种动力机械产品开发、质量检验、工况监测和故障诊断等必不可少的内容,本文在介绍传动轴上应变分布特点和声表面波(SAW)扭矩测量原理的基础上,建立了基于扰动理论的声表面波扭矩敏感理论模型并开发了相应的计算分析软件。以石英为基片材料,在整个三维旋转平面分析计算了不同切向的扭矩敏感特性,从扭矩灵敏度,机电耦合系数和温度延迟系数综合指标优化的角度,得到了适合声表面扭矩传感器使用的基片切向范围。更多还原

【Abstract】 The torque is an important physical quantity in the area such as developing the mechanics machinery products, quality inspection,failure diagnosis,and et al.After introducing the strain distribution characteristics in the power drive shaft and the measurement principle of torque by surface acoustic wave(SAW),the theoretical model of SAW torque sensing is set up based on the perturbation theory and the corresponding analysis software is developed.The torque sensing characteristics is calculated and analyzed in the whole three dimensional plane of rotation by making the quartz as the SAW substrate.From the point of view of optimizing index such as the torque sensitivity,electromechanical coupling factor and temperature coefficient of delay,the possible cut angle range of quartz for SAW torque sensing substrate is obtained.更多还原