PID控制是最早发展起来的经典控制策略, 是用于过程控制最有效的策略之一。由于其原理简单、技术成，在实际应用中较易于整定, 在工业控制中得到了广泛的应用。-PID control is the earliest development of classical control strategy up, is used to process the most effective strategies of control because of its simple technology into the principle, in practical application are more easily setting, in industrial control of a wide range of applications