首先，在分析原模拟厚度控制系统的基础上，作者参与了该系统从模拟闭环控制到数字闭环控制的改造。
First, based on the analysis of the original analog design, the author has participated in the improving of this hydraulic automatic gauge control system from analog control to digital control.
介绍了HC 40 0可逆冷轧机液压压下厚度计算机控制系统的总体组成，并较详细地介绍了厚度闭环用的STD工控机硬件和软件设计。
The composition of the hydraulic gauge computer control system for HC 400 reversing cold mill is introduced. The hardware and software designs of STD industrial control computer are described.
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