信号处理电路的研究与设计毕业.docVIP

南京师范大学中北学院 题 目： 信号处理电路的研究与设计 专 业： 电子信息工程 姓 名： 学 号： 指导教师： 职 称： 教授 填写日期： 2013-05-20 南京师范大学中北学院教务处 制 摘 要 目前，信号产生与处理电路应用非常广泛。例如，在测量、遥控、通信、自动控制、和超声波电焊等加工设备之中，都有正弦波振荡器的应用；在工程应用中，例如在实验用的低频及高频信号产生电路中，往往要求正弦波震荡电路的震荡频率有一定的稳定度，有时要求震荡频率十分稳定，如通讯系统中的射频振荡电路、数字系统的时钟产生电路等。非正弦波在一些电子系统中有着日益广泛的应用，如数字系统需要的特殊信号，如方波﹑三角波都可以通过非正弦波产生电路来得到。此外，在电信装备和各类控制系统中，滤波器应用极为广泛；滤波器的优劣直接决定产品的优劣，所以，对滤波器的研究和生产历来为各国所重视。 基于TL082CD，本设计介绍了正弦波信号的产生，以及基于555定时器构成的多谐振荡电路的探究与设计。同时也介绍了信号处理的相关内容，其中包括信号的叠加和二阶有源滤波放大电路的探究与设计。使用Multisim电路仿真软件对其进行仿真，用来验证电路理论设计的正确性和可行性。 关键词：正弦波信号产生 方波信号产生 信号叠加 二阶有源滤波放大 Abstract Currently, the signal generation and processing circuit is widely used. For example, in the measurement, remote control, communication, automatic control, and ultrasonic welding and other processing equipment into, has a sine wave oscillator is applied; in engineering applications, for example in the experiment with the low and high frequency signal generating circuit, it is often sine-wave oscillation frequency of the oscillator circuit has a certain degree of stability, sometimes requires the oscillation frequency is very stable, as the radio communication system oscillation circuit, a digital system clock generating circuit. Non-sinusoidal in some electronic systems has become increasingly wide range of applications, such as digital systems require a special signal, such as a square wave triangle wave ﹑are available through the non-sinusoidal wave generating circuit to get. In addition, various types of telecommunications equipment and control systems, the filter wide range of applications; filter will directly determine the merits of products, so the research and production of the filter has always been valued by all countries. Based TL082CD, this design introduces the sine wave signal generation, and on the 555 timer consisting of multivibrator circuit inquiry and design. Also introduce