在工程实际中，应用最为广泛的调节器控制规律为比例、积分、微分控制，简称PID控制，又称PID调节。PID控制器问世至今已有近70年历史，它 以其结构简单、稳定性好、工作可靠、调整方便而成为工业控制的主要技术之一。-In the practical engineering, the most widely used regulator control law as the proportion, integral, differential control, PID control, also known as the PID regulator. The PID controller has been developed for nearly 70 years of history, with its simple structure, good stability, reliable operation, convenient adjustment and become one of main techniques of industry control.