本文就外国一些大纯滞后过程的控制技木的进展做一扼要的介绍。特别对于控制界较熟悉的 Smith 预结器,就其稳定性、参数整定、对过程参数变化之敏感性、改进型和自适应等方面做了较详细的评述。另外,对其他一些纯滞后补偿方法,如解析预估器、Dahlin算法、Gautam 算法等等也进行了介绍和讨论。旨在对国外这方面的工作有一个概括了解。 This article gives a brief introduction of the progress of control technology in some large-net-lag foreign countries. Especially for the familiar Smith preconditioner in the control field, it gives a more detailed review of its stability, parameter tuning, sensitivity to process parameter changes, improvement and adaptation. In addition, some other pure delay compensation methods, such as analytic predictor, Dahlin algorithm, Gautam algorithm, etc. are also introduced and discussed. It is intended to give a general overview of the work abroad in this area.