SignalCAD: A Digital Signal Processing Software for Forced and Ambient Vibration Testing of Engineering Structures
SignalCAD: A Digital Signal Processing Software for Forced and Ambient Vibration Testing of Engineering Structures
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SignalCAD：用于工程结构受迫振动和环境振动测试的数字信号处理软件
DOI：
10.1520/jte102458
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
A. Bayraktar
中科院分区：
文献类型：
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作者：
Abdurrahman Sahin;A. Bayraktar
用于测量和分析振动信号的商业工具传统上非常昂贵。然而，在过去十年中，多通道测量系统已经变得相对便宜。大多数廉价仪器的分析功能是有限的。因此，许多公司都在使用替代方法对测量结果进行后处理。MATLAB是一个为此目的而流行的平台，它比专用菜单驱动系统提供了许多优势。MATLAB中的开放函数保证了灵活性和根据特定需要修改函数的可能性。本文介绍了作者在MATLAB中开发的交互式比较数字信号处理软件的介绍和数值应用。该软件被命名为SignalCAD。为了开发SignalCAD，已经创建了大约120个新函数，并与MATLAB信号处理工具箱函数一起使用。SignalCAD程序是一个强大的工具，用于处理从工程结构的强迫和环境振动测试中获得的原始测量数据。SignalCAD为测量数据的可视化和处理以及光谱分析结果的确定和可视化提供了广泛的功能。该程序配置了一个图形用户界面，这使得它非常直观，易于处理。最常见的频谱分析技术已在SignalCAD中使用。通过三维钢架模型振动试验验证了该方案的可行性，并将部分结果与商业PULSE信号分析软件进行了比较。
Commercial tools for measurement and analysis of vibration signals have traditionally been very expensive. In the last decade, however, multi-channel measurement systems have become relatively inexpensive. The analysis functionality in most inexpensive instruments is limited. Therefore, many companies are using alternatives for post processing of measurement results. MATLAB is a platform that is popular for this purpose and which offers many advantages over dedicated menu driven systems. The open functions in MATLAB assure flexibility and the possibility to modify functions for specific needs. In this paper, the presentation and numerical applications of an interactive and comparative digital signal processing software developed in MATLAB by writers is described. The software is named as SignalCAD. For developing SignalCAD, about 120 new functions have been created and are used with MATLAB Signal Processing Toolbox functions. The SignalCAD program is a powerful tool that deals with processing raw measured data obtained from forced and ambient vibration testing of engineering structures. SignalCAD offers extensive functionalities for the visualization and processing of the measurement data and the determination and visualization of the spectral analysis results. The program disposes of a graphical user interface, which what makes it very intuitive and easy to handle. The most common spectral analysis techniques have been used in SignalCAD. The possibilities of the program are demonstrated with a three dimensional steel frame model vibration test and some results are compared with commercial PULSE signal analysis software.