In the process of building this system , we need two side ' s conditions : on one hand , we must understand the idea of virtual instrument and have a good engineering workbench . for this reason , we use labview ( laboratory virtual instrument engineering workbench ) of national instrument company , which is prevalent , as our engineering workbench . because this , we introduce many applications of virtual instrument and labview 开发这样的系统需要具备两方面的条件：一方面要理解虚拟仪器的概念并拥有一个功能强大的开发平台，为此我们采用了目前比较流行的美国国家仪器公司的labview ( laboratoryvirtualinstrumentengineeringworkbench )作为该系统的软件开发平台，对虚拟仪器和labview进行了介绍。
So author develop virtual instruments of multichannel vibration measurement and analysis system based on pc as hardware workbench , laboratory virtual instrument workbench ( labview ) developed by america national instruments corporation as development software , essential sensor , signal conditioner and data acquisition card 为此，本课题研究开发了以pc为硬件平台、以美国国家仪器( ni )公司开发的labview软件为开发平台，配合必要的传感器、信号调理器和数据采集卡组成的多通道振动测试分析系统虚拟仪器。
