利用matlab绘制了一张半对数坐标图，为学自动控制原理的学生绘制伯德图提供借鉴。-Using matlab drew a semi-logarithmic plot, the principle of automatic control for the school to draw students Bird Figure for reference.

控制系统的BODE图校正，未校正的Bode图与频域性能指标，超前校正（方法一）的Bode图与频域性能指标，超前校正（方法二）的Bode图与频域性能指标-BODE diagram of control system calibration, uncorrected Bode plot and frequency domain performance, ahead of the correction (a) Bode plot and frequency domain performance spe