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目前,光栅技术在长度计量领域中得到了广泛应用。大家知道,光栅传感器信号转换的基础是利用两块具有规则周期的光栅迭合时所形成的莫尔条纹。因此,分析各种光栅迭合时的莫尔条纹方程及其特点,是正确设计和正确使用光栅传感器的重要前提。有关长光栅莫尔条纹方程的分析,文献[1]从衍射原理出发,文献[2]按几何光学处理,均有详尽的分析。值得指出的是:两者从不同角度出
At present, grating technology has been widely used in the field of length measurement. We all know that the basis of the grating sensor signal conversion is the use of two grating grating with regular periodicity formed by Moiré fringes. Therefore, it is an important precondition to correctly design and correctly use the grating sensor to analyze the Moiré fringe equation and its characteristics in various grating stacks. For the analysis of the long grating grating moiré fringe equation, the literature [1] proceeded from the principle of diffraction and the literature [2] analyzed it by geometric optics. It is worth pointing out that both are from different perspectives