Kalman滤波在磁检测信号分析中的应用.doc
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1、 XX大学毕业设计(论文)题 目: Kalman滤波在磁检测信号分析中的应用 学 院: 测试与光电工程学院专业名称: 测控技术与仪器班级学号: 学生姓名: 指导教师: 二Oxx 年 六月 Kalman 滤波在磁检测信号分析中的应用摘要:随着我国国民经济的快速发展,在许多的工业、国防部门中,无损检测技术因其低投入,高产出的特点正发挥着不可或缺的作用。近年来,计算机智能化的普及,也使得作为无损检测的重要环节的缺陷检测信号的处理分析向我们提出了更高的要求。实现检测信号的智能化处理是对检测信号进行分析的重要目的。本文简要论述了磁检测过程的基本原理、检测过程的基本步骤、Kalman滤波的基本理论及其推导
2、、Matlab软件等在本课题中的具体应用、基于Matlab的Kalman滤波在磁检测信号分析中的具体应用。对于相同的缺陷信号,采用不同的滤波方式会产生不同的滤波效果,各性能也会不同,本文分别采用Kalman滤波、RLS滤波和LMS滤波对同一缺陷信号进行滤波,并且将其所产生的滤波效果进行对比,同时对于滤波程序分别做出分析,简要总结了个滤波程序的优缺点和包括信噪比和程序运行时间在内的性能参数比较。关键字:磁检测,Kalman滤波,RLS滤波,LMS滤波,信号分析The usage of Kalman filter in the signalof magnetic testingAbstract:W
3、ith the rapid development of our nationals economic ,the technology of nondestructive testing is also standing at a period of fast development .when it comes to the safety of some large projectS ,the things involved the safety of people and the project and also in many industrial departments ,in the
4、 Departments of Defense NDT is playing an indispensable role ,owing to its small investment and large feedback .in recent year ,as the popularity of computer ,the process of signal as an important circle of NDT is setting us a more serious request . One of the most important purposes is to complete
5、the intellectual of signal process.the article briefly introduced the basic theory of the magnetic process,the basic steps of the process ,the basic theory and the derivation of equation ,the practical usage of Matlab and the usage of Kalman filter in Matlab in the process of signal analysis and the
6、 development at home and abroad, At the same time ,we apply different analysis methods to the same signal process.when you adopt different ways will make a difference in filtering effect and performance.This paper uses the Kalman filter, RLS filter and LMS filter for filtering the same defect signal
7、s, the filtering effect is compared, and the filter program to make analysis respectively, summarizes the advantages and disadvantages of a filtering program and including SNR and program running time, the performance parameters of the comparison.Keywords: magnetic testing , Kalman filter,RLS filter
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