说明：  计算多重分形非趋势波动分析，基于SVPWM的三电平逆变的matlab仿真，包含位置式PID算法、积分分离式PID，实现了对10个数字音的识别程序模拟数据分析处理的过程，三相光伏逆变并网的仿真。
( Calculate the multifractal trend fluctuation analysis, Based on SVPWM three-level inverter matlab simulation, It contains positional PID algorithm, integral separate PID, Realization of 10 digital audio recognition program Analog data analysis processing, Three-phase photovoltaic inverter and network simulation.)