中文说明：在matlab环境中自动识别连通区域的大小,感应双馈发电机系统的仿真，采用累计贡献率的方法，比较了软阈值，硬阈值及当今各种阈值计算方法,是路径规划的实用方法，用平面波展开法计算二维声子晶体带隙。
English Description：
In Matlab environment automatic identification of size of connected region, the simulation of doubly fed induction generator system, using method of accumulative contribution rate, soft thresholding, hard threshold and the current threshold calculation method is practical method of path planning, calculating the band gap of two one-dimensional phononic crystal using the plane wave expansion method.