函数发生器的设计研究

Design and Research of Function Generator

信号发生器在学习和工业自动化控制过程中应用非常广泛,而由分立元件、晶体管电路构成的信号发生器,具有抗干扰能力差、信号失真大、制造成本高等缺点,本文通过查阅大量的数据资料,根据所学知识及相关扩展知识,运用计算机仿真软件Multisim作为电路设计的辅助工具,通过电路原理的理论计算与计算机仿真软件的仿真结合,实时检测电路的输入、输出波形变化,不断优化设计方案,设计出一款简单实用、成本低廉、抗干扰能力强、波形稳定性好的函数发生器,展现了正弦波、方波、三角波的设计过程以及实现方案。

Signal generator is widely used in the process of learning and industrial automation control,while the signal generator composed of discrete components and transistor circuits has the disadvantages of poor anti-interference ability,large signal distortion and high manufacturing cost.This paper,through consulting a large number of data,according to the knowledge learned and related extended knowledge,uses the Computer Simulation Software Multisim as an auxiliary tool for circuit design.Through the theoretical calculation of circuit principle and the simulation of computer simulation software,the change of input and output waveforms of the circuit is detected in real time,and the design scheme is continuously optimized.A simple and practical function generator with low cost,strong anti-interference ability and good wave shape stability is designed,which shows the design process of sine wave,square wave and triangle wave and the implementation scheme.