作者：贺芳琪1, 周伦彬2, 蔡晋辉1, 吕林华2
作者单位：1. 中国计量大学计量测试工程学院, 浙江 杭州 310018;
2. 苏州赛宝校准技术服务有限公司, 江苏 苏州 215100
关键词：激光测振仪;自动化校准;灵敏度;频率特性;LabVIEW
摘要：
针对激光测振仪校准中存在自动化程度低的问题，设计激光测振仪的校准装置。介绍装置的硬件、软件设计，进行校准实验验证，测得实验数据并计算校准装置的不确定度。该装置通过所测量的实际值与理论值比较来校准激光测振仪。装置包含激励源部分、测量仪器部分、通信仪器部分和PC机，其中激励源提供标准振动信号和标准频率信号，测量仪器测得输出电压和波形，以GPIB接口作为通信仪器将PC机与激励源和测量仪器相连，PC机以虚拟仪器软件为开发平台，控制输入标准频率信号，采集和显示输出电压数据和波形结果，实现激光测振仪的自动化校准。实验证明装置性能良好，数据真实可靠，误差低于1%，符合规程要求。
Design and application of laser vibrometer calibration device
HE Fangqi1, ZHOU Lunbin2, CAI Jinhui1, LÜ Linhua2
1. College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, China;
2. Suzhou Saibao Centre Testing, Suzhou 215100, China
Abstract: For the problem on low degree of automation in laser vibrometer calibration, the laser vibrometer calibration device is designed. Design of the device's hardware and software is introduced. Calibration experiment and verification are conducted. Experimental data is obtained and the uncertainty of the calibration device is calculated. The device is used for calibrating the laser vibrometer by comparing the actual measured value with the theoretical value. The device includes excitation source section, measuring instrument section, communicated instrument section and PC, wherein the excitation source provides standard vibration signal and standard frequency signal and the measuring instruments measures output voltage and waveform. GPIB interface is taken as communication instrument to connect PC with the excitation source and measuring instruments. For the PC, LabVIEW is taken as development platform to control the standard frequency signal input, collect and display voltage data and waveform result, so as to achieve automated calibration of the laser vibrometer. Experiment results show that the device features good performance; data is reliable and error rate is less than 1%. Thus the device meets the regulation requirements.
Keywords: laser vibrometer;automated calibration;sensitivity;frequency characteristic;LabVIEW
2017, 43(1): 74-77,83 收稿日期: 2016-03-09;收到修改稿日期: 2016-05-21
基金项目:
作者简介: 贺芳琪(1992-),女,山东枣庄市人,硕士研究生,专业方向为热工参数检测与控制。
参考文献
[1] KANG M S, STANBRIDGE A B, CHANG T G, et al.Measuring mode shapes with a continuously scanning laser vibrometer Hilbert transform approach[J]. Mechanical Systems and Signal Processing,2002,16(2):201-210.
[2] 葛隽. 振动校准系统中激光测量及控制技术的研究[D].杭州:浙江大学,2008.
[3] 洪宝林. 9610型振动传感器校准系统[J]. 计测技术,1990(1):6-10.
[4] Methods for the calibration of vibration and shock transducers Part 41:Calibration of laser vibrometers:ISO16043-41[S]. 2011.
[5] 激光测振仪校准规范:JJF 1912-2009[S]. 北京:中国质检出版社,2009.
[6] 张合富,朱振宇,朱国勤. 激光测振仪校准技术评述[J]. 计测技术,2014,34(6):5-8.
[7] 刘杰坤,马修水,马勰. 激光多普勒测振仪研究综述[J]. 激光杂志,2014,35(12):1-5.
[8] 田雪,郑敏信. 基于LabVIEW的光伏储能控制系统设计[J]. 国外电子测量技术,2014,33(12):53-56,60.
[9] 张金,王伯雄,张立新. 基于LabVIEW的GPIB总线独立仪器集成测试平台[J]. 仪器技术与传感器,2010(9):13-15.
[10] 左爱斌,于梅,刘爱东,等. 激光测振仪振动幅值校准不确定度[J]. 计量技术,2011(8):61-64.
[11] 梁志国,李新良,孟晓风. 激光测振仪独立线性度的测量不确定度[J]. 计量学报,2008(7):242-247.
[12] 黄俊钦. 测试误差分析与数学模型[M]. 北京:国防工业出版社,1985:45-60.
