| 毕业论文 基于MATLAB的IIR滤波器的设计及应用，正文共32页，11976字 摘 要 根据IIR数字滤波器的设计原理，提出了IIR数字滤波器的快速设计方法，并在matlab环境下做出了实现快速设计IIR 数字滤波器的设计系统.在该系统中，只需要将数字滤波器的技术性能指标根据指定的或是需要的设计方法（如双线性变换法或脉冲响应不变法等），转换为模拟滤波器的技术性能指标，根据指定的模拟滤波器设计出相应的数字滤波器，该系统中指定的模拟滤波器为巴特沃斯滤波器和切比雪夫滤波器，该系统为快速、高效地设计IIR数字滤波器提供了一个可靠而有效的工作平台. 本文首先对MATLAB软件进行了介绍，并对数字滤波器在其环境下如何实现进行了介绍；其次描述了数字滤波器的基本概念，其包括系统的描述、系统的传递函数、基本结构运算单元；本文重点描述了IIR数字滤波器的设计过程及几种设计方法，并对IIR滤波器的仿真做了一些介绍。 关键词：IIR数字滤波器 模拟滤波器 脉冲响应 数字频率 设计系统 双线性变换 幅频特性 Abstract The fast design method of IIR(Infinite Impulse response)filter is provided based on the principle of filter design, and the design system of the IIR filter worked out under the MATLAB environment. It is necessary that the parameter of digital filter is transformed to the parameter of analog filter based on the indicated method (for example, the method of double linear transform or the method of non-changing impulse response, etc.),and the digital filter is designed based on the indicated analog filter. The Butterworth filter and the Chebyshev filter(both are analog filter)are indicated. A reliable and efficient work station is provided in order to design filter quickly and efficiently. First this text carries on the introduction to the software of MATLAB, and describes the design of digital filter based on MATLAB ;Describes the basic concept of the digital filter the next in order, it includes the description of system,delivering function of the system,the basic structure operation unit;This text point describes design process and several design methods of the IIR digital filter and the simulation of the IIR filter to do some introduction. Key words: IIR digital filter; analog filter; impulse response; digital frequency; design system; double linear transformation; character of magnitude and frequency |
毕业论文 基于MATLAB的IIR滤波器的设计及应用
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