中文说明：% 输入量：轴径d，三角形个数2*n，三角形顶角alpha，矩形个数m（m是奇数），位移y0，采样频率 fs ，轴的转速 v （r/min）% 此程序是模拟主轴转动过程中光电传感器产生的信号% 纸带形状为三角形与矩形的组合% 一个周期中，三角形和矩形各占一半。矩形宽度与矩形之间的间隔相等% 此函数需要调用子函数 search_left 和 search_right
English Description：
% Input: shaft diameter d, the number of triangles 2 * n, triangular apex angle alpha, the rectangle number m (m is an odd number), the displacement y0, the sampling frequency fs, the shaft rotational speed v (r / min)% This program is an analog signal during the rotation of the spindle generated photoelectric sensor% Of a combination of a triangular shape with tape rectangle% A cycle, triangles and rectangles each half. Equal spacing between the width of the rectangle and rectangle% This function needs to be called subroutine search_left and search_right