Recognition of characteristic information of pulse signal based on duty ratio variable

XU Menglu; QIU Zhaoyun; ZHANG Ying; CHEN Huihui; JI Chao

doi:10.13873/J.1000-9787(2020)03-0124-03

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Recognition of characteristic information of pulse signal based on duty ratio variable

更新时间：2025-09-11

- Recognition of characteristic information of pulse signal based on duty ratio variable
- Issue 3, Pages: 124-126+130(2020)
- 作者机构：
  
  1. 潍坊医学院生物科学与技术学院
  2. 潍坊医学院电子与计算机技术教研室
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2020)03-0124-03
  CLC： TN911.6
- Published：2020
- 稿件说明：
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XU Menglu, QIU Zhaoyun, ZHANG Ying, et al. Recognition of characteristic information of pulse signal based on duty ratio variable[J]. 2020, (3): 124-126+130.
DOI：

XU Menglu, QIU Zhaoyun, ZHANG Ying, et al. Recognition of characteristic information of pulse signal based on duty ratio variable[J]. 2020, (3): 124-126+130. DOI： 10.13873/J.1000-9787(2020)03-0124-03.

摘要

为准确识别矩形脉冲信号的特征信息

研究了脉冲信号谐波分量的幅度值、初相位以及频谱成分与占空比的关系。基于连续周期矩形脉冲信号的傅里叶级数展开式

导出了占空比与信号谐波分量幅度值和占空比与谐波分量初相位之间的函数关系

并通过构建仿真电路模型

利用Multisim软件

仿真分析占空比与谐波信号幅度值和占空比与谐波信号初相位的相关性

仿真测量了它们的关系曲线。结果证明:信号占空比与其特征信息的函数关系理论分析和仿真结果相吻合

即在周期矩形脉冲信号的幅度和频率固定的前提下

信号谐波分量的幅度值和初相值是占空比的函数。利用信号占空比与其谐波幅度值和占空比与其初相值之间确定的函数关系和规律

可以实现脉冲信号特征信息的识别。

Abstract

In order to accurately identify the characteristic information of the rectangular pulse signal

the relationship between the amplitude

initial phase

spectral component and duty ratio of the harmonic component of the pulse signal is studied. Based on the Fourier series expansion of the continuous periodic rectangular pulse signal

the functional relationship between the duty ratio and the amplitude of the harmonic component

the duty ratio and the initial phase of the harmonic component are derived

by constructing simulation circuit model

correlation between duty ratio and harmonic signal amplitude

duty ratio and initial phase of harmonic signal is simulated and analyzed by Multisim software

and their relationship curves are measured by simulation. The results show that the signal duty ratio is consistent with the theoretical analysis and simulation results of function relationship of characteristic information

that is

under the premise of the amplitude and frequency of the periodic rectangular pulse signal are fixed

amplitude and initial phase of the harmonic component are functions of duty ratio. Using the functional relationship and law between the duty ratio and the harmonic amplitude and the duty ratio and the initial phase value

the characteristic information of pulse signal can be identified.

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