Relief计算分类权重，一个很有用的程序，调试通过可以使用，基于SVPWM的三电平逆变的matlab仿真，BP神经网络用于函数拟合与模式识别，部分实现了追踪测速迭代松弛算法。- Relief computing classification weight, A very useful program, Debugging can be used, Based on SVPWM three-level inverter matlab simulation, BP neural network function fitting and pattern recognition, Partially achieved tracking speed iterative relaxation algorithm.