(26页、10386字) 摘 要:在电子工程、测量仪器、自动控制、无线电通信和遥控等技术领域中，需要用到各种各样的波形发生器。其中,方波、三角波、正弦波函数发生器最为常用也最为普遍。函数信号发生器为电路系统提供最基本的信号源，是电路系统的核心。电路由比较器产生方波、积分器产生三角波、再由差分放大器产生正弦波，每个模块电路之间要有耦合电容来连接，最后由闭环电路反馈级联而成。设计制作完成后，电路能够自激产生以上三种波形，频率、幅度大小都通过可调电位器实现人工调节.与现有的各种类型函数发生器比较而言，产生的信号输出稳定，可靠性高，而且电路搭建简单，特别是作简单方便、成本低。
关键词:函数信号发生器 积分器 差分放大器 闭环电路
Abstract
It’s no secret that today’s shock circuit system, such as electronic engineering, instrument measure, automatism control, wireless communication and remote control technology field, cannot operate without function signal generator. Thereinto, pulse wave, triangle wave and digital sine wave are the most prevalent and universal in all stripes of our practicality engineering technology. Function signal generator can support the most basal signal source and is increasingly becoming the core of practicality technology engineering. This model shock circuit system is made up of ideality operation amplifier which can generate pulse wave, integrator which can generate triangle wave, and difference amplifier which can generate digital sine wave. After completion of design and facture, this model generator can self-excitation generate three waves above involved, meanwhile the frequency and the voltage scope of the three waves can carry out manual work. Compared with all kinds of present types function generators this model generator generate digital signals steady output, high reliability and simply design and make. Moreover, convenient operate and low-cost.
Keywords: function signal generator, integrator，difference amplifier, closed loop circuit
目 录
1 概述 1
2 技术指标 1
3 方案设计与论证 1
4 系统电路设计 3
4.1 函数发生器组成框图 3
4.2 元器件型号选用 4
4.3 电路形式 4
4.4 差分放大器 4
4.5 运算放大器 6
4.6 三端集成稳压器 7
5 模块电路设计 8
5.1方波→三角波电路 8
5.1.1 方波→三角波电路原理 8
5.1.2 方波→三角波电路参数分析 9
5.2 三角波→正弦波电路 10
5.2.1 三角波→正弦波变换原理 10
5.2.2 三角波→正弦波原理参数分析 11
6 总体电路原理方框图 12
6.1 波形产生电路原理 12
6.2直流稳压电源电路原理 14
7 电路安装与调试 15
7.1 方波→三角波电路的装调 16
7.2 三角波→正弦波电路的装调 16
7.3 仿真效果 17
8 波形误差分析 17
9 系统评估 17
10 结论 18
参考文献 19
附录一：总体电路图 21
附录二：仿真效果图 22
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