基于单测点单方向多普勒激光测头面内振动测试方法  

Test the in-plane vibration-mode with one-dimensional Doppler laser speed detector for single test-point

作　　者：纪跃波[1] 白永明[2] 黄卫清[2] 陶征[2] 赵淳生[2] 

机构地区：[1]集美大学机械工程学院,福建厦门361021 [2]南京航空航天大学超声电机研究中心,江苏南京210016

出　　处：《振动工程学报》2007年第3期232-237,共6页Journal of Vibration Engineering

基　　金：国家自然科学基金重点资助项目(50235010);江苏省博士后科研基金资助项目(0501021B);福建省青年科技人才创新项目(2003J034)

摘　　要：介绍了基于单测点单方向多普勒激光测头的面内未知方向正弦振动的测量方法。测点单一模态面内振动为稳定的正弦振动,将其振动速度用互相垂直的两个稳定振动速度分量来表示。只用一个单测点单方向激光测头通过分时测量各个测点的两个振动分量即可测出各个测点的面内振动速度矢量。以正弦激励信号为同步相位基准,通过点阵振动数据拟合得到超声电机定子在工作模态频率正弦激励下的面内振型。所开发的面内振动模态试验测试系统对超声电机的研究开发具有重要的应用价值。Introduction on t Doppler laser speed detector he technology for measurement of sine vibration in unknown direction with one-dimensional for single test-point is given in this paper. Because the in-plane sine vibration of test-point with single mode is steady, it can be decomposed into two velocity vectors with the directions vertical to each other. Only utilizing a one-dimensional Doppler laser speed detector for single test-point, through testing the two velocity components in timesharing way, the two-dimensional in-plane vibration at every test-point is obtained. Based on the assumption that the sine stimulus signal are regarded as phase references, and through a numerical analysis of the vibration data of the test-points, we get the vibration mode of the stator of ultrasonic motors stimulated with a modal-frequency sine signal. The developed test system for ultrasonic motors in-plane vibration modal testing is of great value in application to research or development of ultrasonic motors.

关 键 词：超声电机 振动 测试 面内振动 振型 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置] TH825[自动化与计算机技术—控制科学与工程]