A two-stage system process control method for a hot strip mill

Abstract

The invention relates to a second-level system progress control method and device of a hot rolled strip rolling mill. According to the method, OpenVMS system software is converted to a windows platform, and the method mainly includes the steps that an information exchange function is modified; storage space management is rewritten; windows communication foundation and a remote procedure call frame on the basis of c++ compiling are adopted for rewriting inter-process communication; a program of a minicomputer second-level system is modified to communicate with other systems, and other systems are not modified; a roll steel model and steel mill data are combined with software engineering through a metallography model. Because the OpenVMS system software is converted to the windows platform, visual studio c++ of Microsoft can be used for visual programming, and meanwhile a lot of class libraries provided by Microsoft are used for greatly improving programming efficiency. Due to the fact that visual studio c++ is used for visual programming, the readability of the program is remarkably improved, and a debugging tool provided by Microsoft can be adopted for conveniently and rapidly positioning a program error and greatly improving debugging efficiency. Due to the convenient visual debugging tool, error search time can be shortened to 5-6 minutes from 20-30 minutes, and then working efficiency is greatly improved.

Description

technical field [0001] The invention relates to the application of the process control of a hot-rolled strip mill on a computer, in particular to a secondary system process control method and device for a hot-rolled strip mill. Background technique [0002] The computer control system for hot rolling of hot-rolled strip steel is generally divided into three levels. In the control of the management optimization machine, the production management control machine is an ALPHA medium-sized machine. Its main function is to calculate the online rolling program for the billet to be processed. call the mathematical model in the system to generate a rolling table, which includes parameters such as the rolling speed, rolling force, and downforce of each pass, and conduct online testing according to the actual working conditions during the rolling process. Adjust in real time, collect working process parameters at the same time, improve the self-learning function of the control system, ...

AI Technical Summary

Problems solved by technology

Therefore, the secondary computer is responsible for the arrangement of the production plan of the rolling mill, including technical parameter setting, quality control, data collection, logistics and contract management, etc. The amount of data processing is huge, but in actual production, because the Alpha minicomputer is used The operating platform OpenVMS uses a black and white screen like DOS, and operates by typing commands, which is extremely inconvenient to maintain

Software development and debugging are as difficult as under DOS. Modifying the source code is even more difficult than modifying the txt file. The debugger needs to learn a lot of debugging instructions before it can be carried out. It only takes 5 minutes to debug a small problem on Windows, but on the ALPHA machine It takes 20-30 minutes, which brings great inconvenience to debugging and development

At the same time, the interface between OpenVMS and databases (such as Oracle, SQLServer) is extremely inconvenient, and the operating software and hardware are tied together, which is extremely unsuitable for the development trend of modern computer technology.

[0003] In addition, the price of ALPHA server is more expensive than that of PC server, and the price of openvms is more expensive than that of WindowsNT, etc. These conditions limit the wider application of Openvms

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