| Lissajou图形观察法检测信号的理论依据 |
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| 引用本文： | 刘春霞,万秋华,李葆勇,赵长海,丁林辉.Lissajou图形观察法检测信号的理论依据[J].电子器件,2007,30(3):1018-1020. |
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| 作者姓名： | 刘春霞 万秋华 李葆勇 赵长海 丁林辉 |
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| 作者单位： | 1. 黑龙江大学物理科学与技术学院,哈尔滨,150080;中国科学院长春光学精密机械与物理研究所,长春130033
2. 中国科学院长春光学精密机械与物理研究所,长春130033 |
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| 摘 要： | 示波器的Lissajou图形,广泛应用于信号幅值、频率及相位的测量.但是,长期以来所应用的检测规律都是工作经验的积累,没有一定的理论依据.以圆光栅产生的莫尔条纹信号检测为例,从理论上分析了Lissajou图形向径偏差与信号波形参数之间的关系,并且对各种参数偏离情况进行了图形仿真,分析结果与以往经验相符合,为信号检测提供了理论依据,同时指出Lissajou图形观察法的一些不足.
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| 关 键 词： | 信号检测 Lissajou图形 计算机仿真 向径偏差 莫尔条纹 |
| 文章编号： | 1005-9490（2007）03-1018-03 |
| 修稿时间： | 2006-06-09 |
Theory Basis of Testing Signals by Lissajou Pattern Observation Method |
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| LIU Chun-xia,WAN Qiu-hua,LI Bao-yong,ZHAO Chang-hai,DING Lin-hui.Theory Basis of Testing Signals by Lissajou Pattern Observation Method[J].Journal of Electron Devices,2007,30(3):1018-1020. |
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| Authors: | LIU Chun-xia WAN Qiu-hua LI Bao-yong ZHAO Chang-hai DING Lin-hui |
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| Affiliation: | 1. College of Physics Science and Technology, Heilongjiang University, Harbin 150080, China ;2. Changchun Institute of Optics, Fine Mechanics and Physics, the Chinese Academy of Sciences, Changchun 130033, China |
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| Abstract: | The Lissajou graphs of oscillograph have been applied in the testing field of signal amplitude, frequency and phase. However, the detection laws used previously were founded on the working experience without certain theory base. Taking the detection of Moire fringe signals as an example, we analyze the relation between the vector difference of Lissajou graphs and parameters of wave shape of signals, and simulate the deviation of various parameters. The analytical results agree with the experimental ones, and present the basis for signal detection. The shortcoming of Lissajou pattern observation method is pointed out. |
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| Keywords: | signal test lissajou graphs computer emulation difference of two vector Moire fringes |
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