% [db,mag,pha,grd,w] = freqz_m(b,a); % db = Relative magnitude in dB computed over 0 to pi radians % mag = absolute magnitude computed over 0 to pi radians % pha = Phase response in radians over 0 to pi radians % grd = Group delay over 0 to pi

英文原版书籍 少年派的奇幻漂流Life of Pi是pdf。

VIENNA整流器PI控制器参数设计方法，详细介绍VIENNA整流器的设计参考