文档介绍：毕业论文
题目:基于MATLAB的IIR滤波器设计与仿真
学生姓名:
学生学号:
系(院): 电气信息工程学院
专业: 电子信息工程
届别: 2013
指导教师:
完成时间: 2013年5月4日
基于MATLAB的IIR滤波器设计与仿真
摘要:生活中由于信号噪声无处不在,而观测和控制都需要真实的信号,所以我们使用到了滤波器。很多信号分析都是基于滤波器而进行的,而数字滤波器是通过数值运算实现滤波,具有处理精度高、稳定、灵活、不存在阻抗匹配问题,可以实现模拟滤波器无法实现的特殊滤波功能。数字滤波器根据其冲激响应函数的时域特性,可分为两种,即无限长冲激响应(IIR)数字滤波器和有限长冲激响应(FIR)数字滤波器。实现IIR滤波器的阶次较低,所用的存储单元较少,效率高,精度高,而且能够保留一些模拟滤波器的优良特性,因此应用很广。Matlab软件以矩阵运算为基础,把计算、可视化及程序设计有机融合到交互式工作环境中,并且为数字滤波的研究和应用提供了一个直观、高效、便捷的利器。尤其是Matlab中的信号处理工具箱使各个领域的研究人员可以直观方便地进行科学研究与工程应用。本文首先介绍了数字滤波器的概念,分类以及设计要求。
关键词:IIR;滤波器;MATLAB;Simulink
Design and Simulation of IIR filter based on MATLAB
Abstract:Because the signal noise of life everywhere, but the observation and control signals have to be true, so we use to filter. many signal analysis is based on filters, and the digital filter is realized through putation, digital filters filter with high precision, stability and flexibility, don't exist, can realize the impedance matching simulating the special filter cannot achieve filter function. Digital filter according to its impulse response function and characteristics of the time can be divided into two kinds, namely the infinite impulse response (IIR) digital filter and finite impulse response (FIR digital filters). The order of realizing IIR filter is used, low and high efficiency less storage unit, high precision, and can keep some simulation characteristics of filter, so it is widely used. Matlab software based on putation, the calculation, visualization and program design anic integration to interactive environment for digital filter, and the research and application of provides an intuitive, efficient and convenient tool. Especially in the Matlab signal processing to all areas of research toolbox personnel can easily for scientific research and engineering application. This paper introduces the concept of digital filter, classification and design requirements.
Key words: IIR; Filter; MATLAB; Simulink
前言
数字信号处理(digital signal pro