许多工业过程系统的一个共同特点是存在着相当大的纯滞后。早在五十年代美国的Smith就提出了纯滞后预估补偿算法,称之为Smith算法。后来又有Dahlin,Kalman等人相继提出了自己对纯滞后系统的控制算法。随着计算机用于工业控制中,使许多以前难于用仪表实现的算法,可以付诸实现。 A common feature of many industrial process systems is the existence of a significant net lag. As early as the fifties Smith in the United States proposed a purely lag prediction compensation algorithm, called the Smith algorithm. Later, another Dahlin, Kalman, who have put forward their own control algorithm for the system with dead time. As computers are used in industrial control, many of the previously difficult to implement algorithms can be implemented.