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三角波幅度切割型莫尔条纹电子细分器近年来得到较广泛的应用。这种电路具有可获得较高的分辨率和较高的细分精度的优点,但是也存在着电路较为复杂的缺点。为此,本文提出这种使电路尽量简化,细分精度无降低的改进电路。改进工作主要在以下三个方面: (1)模拟运算部份的参考电压改为由|sinθ|+|cosθ|组成,三角波电压信号也改为||sinθ|-|cosθ||。这样改进后,模拟运算部分所需集成运算放大器的个数从原来的九个降为五个,所需匹配电阻也相应减少。 (2)由于三角波电压是以绝对值的形式
Triangle wave amplitude cutting moire fringe electronic subdivision in recent years has been more widely used. This circuit has the advantages of higher resolution and higher subdivision accuracy, but also has the disadvantage that the circuit is more complex. For this reason, this paper presents an improved circuit that makes the circuit as simple as possible and with no degradation in subdivision accuracy. Improvement work mainly in the following three aspects: (1) Analog computing part of the reference voltage changed to | sinθ | + | cosθ | composition, the triangular wave voltage signal is also changed to || sinθ | - | cosθ ||. This improvement, the analog part of the required number of integrated op amp from the original nine down to five, the required matching resistance is also reduced. (2) Since the triangular wave voltage is in the form of an absolute value