首页> 外文会议>5th International Symposium on Test and Measurement (ISTM/2003) Vol.6 Jun 1-5, 2003 Shenzhen, China >Measurement and Diagnosis of Flat Wheel's Bruise Based on Wavelet Analysis and Virtual Instrument
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Measurement and Diagnosis of Flat Wheel's Bruise Based on Wavelet Analysis and Virtual Instrument

机译:基于小波分析和虚拟仪器的Flat轮挫伤测量与诊断。

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摘要

Measurement and diagnosis of flat wheel's bruise is desirable for incipient fault detection of train wheel and maintenance of railroad car. With the development of real-time online detection, new hardware systems have been put forward. At the same time, novel real-time data processing and analysis techniques are required to apply in this area. In this paper, wavelet analysis technique is introduced and applied to data processing of bruise signals. Though wavelet analysis itself is not new, its application to measurement and analysis of flat wheel's bruise is. In contrast to traditional stand-alone instrument, the measurement and diagnosis system using wavelet analysis is built on a PC-based virtual instrument. Virtual instrument utilizes modular concept for design and construction of system, bringing great power and flexibility to whole system. This virtual instrument has been developed specially using modular programmable controls integrating wavelet analysis algorithm in it. The effectiveness of wavelet analysis is demonstrated by separating actual bruise signals from impulse noise and low-frequency disturbance successfully. Comparison of wavelet analysis with conventional digital signal filtering is also presented in this paper and the results show that wavelet analysis enhances diagnosis precision.
机译:对于车轮的早期故障检测和有轨电车的维护,需要对车轮的擦伤进行测量和诊断。随着实时在线检测的发展,提出了新的硬件系统。同时,需要将新颖的实时数据处理和分析技术应用于该领域。本文介绍了小波分析技术,并将其应用于挫伤信号的数据处理。尽管小波分析本身并不是什么新鲜事物,但是它在平整轮损伤的测量和分析中的应用却是。与传统的独立仪器相比,使用小波分析的测量和诊断系统建立在基于PC的虚拟仪器上。虚拟仪器利用模块化概念设计和构建系统,为整个系统带来了强大的功能和灵活性。该虚拟仪器是使用集成了小波分析算法的模块化可编程控件专门开发的。通过将实际的瘀伤信号与脉冲噪声和低频干扰成功分离,证明了小波分析的有效性。还将小波分析与常规数字信号滤波进行了比较,结果表明小波分析提高了诊断的准确性。

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