中文说明：有循环检测，周期性检测，在MATLAB中求图像纹理特征，三相光伏逆变并网的仿真，包含优化类的几个简单示例程序，真的是一个好程序，鲁棒性好，性能优越。
English Description：
Cycle detection, periodic testing, image texture feature in MATLAB, simulation of three phase photovoltaic grid-connected inverter, includes a few simple examples of optimization class program, is really a good program, robustness and superior performance.