压 控 函 数 发 生 器

课程设计报告

班级： 学号 姓名：

东华大学信息科学与技术学院

摘要：

该压控函数发生器课程设计，由集成运算放大器电路和差分放大电路两部分组成，总电路包含输入电路、极性变换电路、积分电路、施密特比较反馈电路和非线性转换电路五个单元模块，最终实现三角波、方波和正弦波的生成，并且达到输入电压的大小控制输出信号的频率的功能，即 fi? h( Ui)。

关键字： 施密特比较反馈电路 压控 Abstract:

The pressure control function generator curriculum design, the integrated operational amplifier circuit and differential amplifier circuit of two parts, the total circuit includes input circuit, polar transformation circuit, integral circuit, schmidt comparison feedback circuit and nonlinear switching circuit five unit module, finally realizes the triangular wave and square wave and the generation of sine wave, and the size of the input voltage to control the output frequency of the signal function, namelyfi? h( Ui).

Key word: schmidt comparison feedback circuit voltage controlled

目 录

1. 设计任务 .............................................................................................................................. 1 2. 方案选择 .............................................................................................................................. 1

2.1 方案选择 ........................................................................................................................... 1 2.2 方框图 ................................................................................................................................ 1

3. 理论分析与电路设计 .................................................................................................... 2

3.1 0—10V直流信号的产生电路 ................................................................................... 2 3.2 极性变换电路 ................................................................................................................ 2 3.3 积分电路 ........................................................................................................................... 3 3.4 比较反馈电路.................................................................................................................. 4 3.5 三角波—方波总电路 .................................................................................................... 5 3.6 非线性比较电路 ........................................................................................................... 6

4．计算机仿真 ........................................................................................................................ 7 5．组装与调试 ........................................................................................................................ 7

5.1 输入电路 ......................................................................................................................... 7 5.2 极性变换电路 ................................................................................................................ 7 5.3 积分电路 ........................................................................................................................... 8 5.4 比较反馈电路.................................................................................................................. 8 5.5 非线性转换电路.............................................................................................................. 8 5.6 电路调试 ......................................................................................................................... 9

6．测试结果 ............................................................................................................................. 9

6.1 测试波形 ...................................................................................................................... 10 6.2 测试数据 ....................................................................................................................... 11

7．仪器仪表与元件使用 ................................................................................................. 12 参考文献................................................................................................................................. 13 收获与体会 ........................................................................................................................... 14