方框图运算是自动化系统设计的基础。笔者曾在本刊发表几篇自适应Smith预估方法的文章,曾引起若干读者、专家的兴趣,并对时域乘(除)法器能否应用于该处有些质疑,我觉得我国目前缺少的是学术上的百家争鸣,一个人的认识难免会患片面性,众多人的智慧就可以推动一个学科的发展,讨论与争论对于作者是一个学习,对于许多读者是连锁的思考。随着新型系统的研究,应用乘(或除)部件会 Block diagram calculation is the basis of automation system design. The author has published several articles in this magazine that fit the Smith prediction method and has aroused the interest of several readers and experts and has some doubts about whether the multiplication and division of time domain can be applied to this office. Is the academic contention of a hundred schools of thought. One’s knowledge will inevitably suffer from one-sidedness. The wisdom of many people can promote the development of a discipline. The discussion and debate are a study of the author and a chain of thinking for many readers. With the new system of research, applying multiplication (or division) components will