【作者】 邵军；

【导师】 高品贤；

【作者基本信息】 西南交通大学 ， 测试计量技术及仪器， 2002， 硕士

【摘要】 作为当代三大主要污染源之一，噪声污染已成为一个世界性的问题并且引起了世人的关注。随着工业技术的发展，由物体摩擦产生的噪声污染也越来越严重。对摩擦噪声进行测量、研究和控制，从环境保护事业出发，是十分需要的；同时通过对摩擦噪声的分析，还可以深入了解摩擦机理，有助于改善摩擦条件和进行工况监测， 目前对噪声的测量主要采用模拟测量系统，系统均由模拟仪器组成，如声级计、倍频程或1/3倍频程滤波器和电平记录仪等，系统存在测试精度不高、分析内容欠丰富、连线复杂、体积大、通用性差等缺点。随着计算机技术与测试技术的深层次结合，虚拟仪器的出现弥补了传统测试仪器的不足，虚拟仪器将是仪器行业未来发展的主要方向。 本文的目的就是利用虚拟仪器技术，采用Lab Window/CVI虚拟仪器编程语言和相应的硬件，设计了一套完整的摩擦噪声虚拟测试系统。数据采集系统采用先进的PCI总线接口，有关相应的模拟分析仪器全部用软件实现，使摩擦噪声测量系统提高了一个档次，有效地提高了摩擦噪声的测量精度，丰富了分析内容。论文还对摩擦噪声的测量方法(?)进行了探讨，并对若干注意事项提出了建议。 虚拟测试系统设计完成后，用该系统对摩擦噪声进行了大量的测试和分析。实测结果表明该虚拟测试系统的设计是成功的、合理的，达到了预期的效果。更多还原

【Abstract】 As the one of the three primary source of pollution, noise pollution has become worldwide problem and aroused earthling attention. With the development of industrial technology, noise pollution caused by body friction has been increasingly serious. For the sake of environmental protection, it is very necessary to measure, research and control the rub noise. At the same time, with the analysis of rub noise, we can appreciate the mechanism of friction in-depth. It is also beneficial to the improvement on rub condition and the monitoring on work.At present the measure of noise is based on analog measuring system comprised of analog instrument such as sound level meter, octave or 1/3 octave filter, level graphic instrument and so on. The system has the shortcoming as follows: low accuracy test, under abundant analytical contents, complex connective lines, large volume, poor generality and so forth. With the development of computer technology in combination with test technology, virtual instrument has made up the shortage of conventional test instrument. Virtual instrument has taken the lead of the profession of instrument.With the use of virtual instrument technology, and corresponding hardware, an entire digital measuring system on rub noise is designed in the paper, the programming language is LabWindows/CVI. Data acquisition system adopts senior PCI local bus interface, relevant analog analytical instruments are completely designed by software. The measures abovementioned have greatly improved the measuring system- on friction noise, increased the measuring precision and fertilized the analytical contents. In the paper, analytical methods and norms on friction noise is discussed and some advice about announcement is given.After the design of virtual measuring system, a lot of test has been conducted on friction noise. According to the analysis of practical measurement, this virtual measuring system is proved to be a success and the performance meets the expectations.*The thesis has obtained grant from National Natural Science Foundation Subentry (NO.50075072).更多还原