通过调整PID的三个参数KP、TI、TD ，将系统的闭环特征根分布在 s 域的左半平面的某一特定域内，以保证系统具有足够的稳定裕度并满足给定的性能指标 -Ziegler-Nichols method for tuning PID controllers can be summarized as follows: Set the integral and derivative gains to zero and increase the proportional gain until the