在过程控制中，按偏差的比例（P）、积分（I）和微分（D）进行控制的PID控制器（亦称PID调节器）是应用最为广泛的一种自动控制器。(In the process control, the PID controller (also called the PID regulator), which is controlled by the proportion of deviations (P), integral (I) and differential (D), is the most widely used automatic controller.)