基于SVPWM的三电平逆变的matlab仿真，现代信号处理中谱估计在matlab中的使用，对于初学者具有参考意义，旋转机械二维全息谱计算，包含特征值与特征向量的提取、训练样本以及最后的识别，基于互功率谱的时延估计。- Based on SVPWM three-level inverter matlab simulation, Modern signal processing used in the spectral estimation in matlab, For beginners with a reference value, Rotating machinery 2-d holographic spectrum calculation, Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition, Based on the time delay estimation of power spectrum.