动态特性模拟补偿滤波器模拟电路设计设计
时间:2021-06-13 09:27 来源:毕业论文 作者:毕业论文 点击:次
摘要本文针对典型一、二阶测量系统，研究动态特性补偿滤波器的设计与模拟电路的实现。 根据典型一、二阶测量系统的低通特点，按巴特沃斯低通滤波器设计出补偿合成系统，然后将其传递函数除以被补偿测量系统的传递函数，从而得到补偿滤波器的传递函数。 通过单片机控制若干个双二阶有源RC电路和一阶有源RC滤波电路的级联和参数来实现补偿滤波器的传递函数。级联通过模拟开关CD4052来实现，电路的参数主要通过数字电位器x9221来调节，它们均可以由诸如AT89C51之类的通用单片机控制。68319 文中对一些具体的典型一、二阶测量系统，做出了补偿仿真(采用的Pspice)和实验测试，通过对实验结果的分析，证明了补偿滤波器的有效性。其上限截止频率通过调节可到达20kHz，并且可根据应用需求往下调节。 毕业论文关键词：动态特性补偿；x9221数字电位器；CD4052；PSPICE；AT89C51。
毕业设计说明书（论文）外文摘要 Title Design and Application of Dynamic Analog Compensation Filters (Analog Circuit Design) Abstract In order to improve the dynamic characteristics of dynamic measurement system, the paper research the design of dynamic compensation filters and the achievement of analog circuit for typical first-order and second-order measurement system. This issue, according to Butterworth low-pass filter, designed synthesis compensation system, and then let it’s transfer function pide the transfer function of the measurement system, resulting in the transfer function of the compensation filter. Under the control of MCU, we can control the parameters of active filter to achieve compensation filter transfer function. Its cascade can be achieved by MCU control CD4052, the circuit parameters can also be adjusted by the MCU to control digital potentiometer x9221. In this paper, designed some compensation system to appropriate typical first-order and second-order measurement system. According to the analysis of the simulated and experimental results, demonstrated the effectiveness of the compensation filter. Its upper cut-off frequency can be reached by adjusting 20kHz, and can be adjusted according to the application requirements down. Key words: Dynamic compensation; x9221 digital potentiometer; CD4052; PSPICE; AT89C51 1 绪论 1 1.1 本课题的研究背景、目的及其意义 1 1.3 动态特性模拟补偿滤波器的实现技术的国内外研究现状 3 1.4 本课题所研究的内容 3 1.5 论文章节安排 3 1.6 本章小结 4 2 测量系统动态特性模拟补偿传递函数设计和算法 5 2.1 补偿滤波器传递函数设计 5 2.2 补偿滤波器传递函数的具体算法 6 2.3 本章小结 7 3 动态模拟补偿滤波器的硬件电路设计 8 3.1 硬件设计总体方案 8 (责任编辑：qin) |