Abstract: Multi rate digital control technique has received special attention in chemical industry recently because of its good performance and strong adaptability. This paper briefly surveys the evolution history of multi rate digital control technique，and introduces the present theoretical and application research on multi rate control system. Furthermore，the existing difficulties in the research，such as data-losing and time-delay，are discussed，and corresponding approaches taken are also analyzed. Finally，the research trend of the technique is presented，with an emphasis on potential applications.

摘要： 由于多采样率数字控制技术具有提高控制效果、适应多种复杂实际情况等诸多优势，近年来受到了化工领域的广泛关注。简要回顾了多采样率数字控制技术的发展历程，并分类介绍了多采样率数字控制技术的理论研究和工程应用现状；详细讨论了目前研究中存在的数据缺失、延时等热点问题，并对其当前主要研究方法进行了深入讨论；最后对多采样率数字控制技术的发展前景和未来研究方向进行了总体展望。