Method for realizing continuous feedback control by duality of hot finishing outlet instruments

Abstract

The invention discloses a method for realizing continuous feedback control by duality of hot finishing outlet instruments, which particularly includes steps that instruments used for detecting production target parameters are integrated into a hot continuous rolling production line, wherein each production target parameter is detected by at least two instruments simultaneously and utilizes identical data output modes to output, a parameter detected by one instrument of each production target parameter is utilized as a measured signal while a signal detected by the other instrument of each production target parameter is utilized as a redundant signal, the measured signal and the redundant signal are transmitted to a control system to form functions of redundantly outputting finished product key quality target detection data, mutually diagnosing the redundant signal basically and automatically and fast switching, thereby realizing closed loop control of instrument detected information continuous participating feedback, effectively guaranteeing four basic quality indexes of finished steel strips, and increasing operating rate of a rolling mill. The method plays a strong guarantee for increasing yield, guaranteeing quality and reducing waste steel rate and safety accident rate.

Description

technical field [0001] The invention relates to a hot-rolled thin plate production line, a method in which the measurement output signal of a key index detection instrument participates in the control of a rolling mill, in particular to a method for realizing continuous feedback control by duplicating the detection signals of the exit instrument of the hot-rolled thin plate finish rolling. Background technique [0002] In the production of hot-rolled coils, the on-line detection instrument device must continuously provide accurate measurement feedback data information for the basic automatic rolling mill computer (primary machine) and process control computer (secondary machine) in real time, so as to ensure that various The control output data can be corrected accurately and quickly to meet the control requirements of various indicators of the product. Therefore, rolling line inspection instruments play a vital role in product quality control. [0003] At present, the key ...

AI Technical Summary

Problems solved by technology

However, due to the change of the rolling plan, after the steel type and rolling specifications of the rolling line are replaced, this temporary emergency measure becomes powerless, so that the width index of the strip of the coil cannot be accurately controlled. The occurrence of the event will eventually lead to the consequence that the rolling line is forced to temporarily stop production for maintenance due to instrument failure, which directly affects the output.

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