摘要
力学教学试验是力学学科研究生培养重要一环,基于虚拟仪器技术,开发一套试验模态参数识别软件。模态参数识别基于两种识别方法:正交多项式总体曲线拟合法和多参考点最小二乘复频域识别方法,引入聚类算法搜寻系统的极点。系统将数据采集和模态参数识别集与一体,人机交互界面友好方便。试验验证了演示系统的有效性和准确性,目前用于教学试验。
Teaching experiment of Mechanics is an important part of postgraduate education in mechanics branch. Based on virtual instrument technology,the system of modal identification modal parameter identification developed by LabVI- WE,is applied to teaching experiment of mechanics. The system integrates two methods of modal parameter identifica- tion. One is curve fitting using the orthogonal polynomial method and the other is poly-reference implementation of the least-squares complex frequency-domain estimator. Fuzzy clustering technique is introduced to find actual system poles. The demonstration system is modular in design,mainly includes data acquisition module and modal parameter identifica- tion module, which has friend and easy human-computer interface. The experiment result has verified the validity and reli- ability of the teaching demonstration system. At present,the system has been put into mechanics teaching experiment.
出处
《国外电子测量技术》
2012年第2期94-98,共5页
Foreign Electronic Measurement Technology
基金
南京航空航天大学人才引进科研启动经费资助(1001-YAH10033)
作者简介
姜金辉，博士，讲师，主要研究方向为振动测试与数据处理。
