PC控制系统的计算机辅助设计

The Computer-aided Desingn of PC Control System

针对ＰＣ控制系统设计过程中的关键性技术问题，提出并实施了计算机辅助设计方法。通过对梯形图的分析比较，绘出了逻辑表达式的变换方法。进而使用模块化和计算机编译技术，实现了电气图向梯形图逻辑表达式的自动转换。

In this paper, the method of computer-aided design is utilized to solve the pivotal technique problems in the process of designing the programmable controller (PC) control system.By means of analysing relay ladder deagram, the conversion method of logical expression is gained. By use of modular and computer compiling techniqe, the automatic conversion of electric diagram to the logical expression of relay ladder diagram, the automatic plotting of relay ladder diagram, and the automatic programming of PC command are realized.