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本文以工业过程中具有纯滞后的一阶惯性对象为典型对象，针对Ｓｍｉｔｈ预估器对外扰信号适应能力较差的缺点，从结构上对其进行改造，改造后的Ｓｍｉｔｈ预估器新结构在应力冻结箱微机控制系统的应用中，获得了良好的控制效果。
In this paper, the first-order inertial object with pure hysteresis in industrial process is a typical object. In view of the shortcomings that the Smith predictor has poor adaptability to out-of-band signals, it is structurally modified. The new Smith predictor structure Stress freezing box microcomputer control system applications, access to a good control effect.