Developing an effective diagnosis for safety improvement in steelworks

2005 ◽  
Vol 4 (4) ◽  
pp. 229-240
Author(s):  
A.R. Hale ◽  
H.A. v.d. Waterbeemd ◽  
R. Potter ◽  
B.H. Heming ◽  
P.H.J.J. Swuste ◽  
...  
Keyword(s):  
Control System ◽  
Cold Rolling ◽  
Rolling Mill ◽  
Safety Management ◽  
Risk Control ◽  
Cold Rolling Mill ◽  
Rich Picture ◽  
Safety Improvement ◽  
Effective Diagnosis ◽  
Current Risk

The paper describes the methods used for a study of the safety management system and culture of a cold rolling mill in a steel plant. It uses data from diverse sources which can be validated against each other and combined to produce a rich picture of the current risk control system and its shortcomings. The paper also describes the proposed improvements and what the plant chose to implement. This step also throws light on the culture of the plant.

Advanced thickness gauge control system for cold rolling mill in an unsteady state

1993 ◽  
Vol 90 (1) ◽  
pp. 99-106
Author(s):  
K. Kikuchi ◽  
Y. Naitoh ◽  
S. Yamamoto ◽  
A. Kitamura ◽  
Y. Nishida ◽  
...  
Keyword(s):  
Control System ◽  
Cold Rolling ◽  
Rolling Mill ◽  
Thickness Gauge ◽  
Unsteady State ◽  
Cold Rolling Mill

The Transformation of Control System for Bell-Type Annealing Furnace with Pure Hydrogen in Pangang Group Cold Rolling Mill

2013 ◽  
Vol 336-338 ◽  
pp. 1245-1249
Author(s):  
Jian Bing Wu ◽  
Ji Guang Liu
Keyword(s):  
Control System ◽  
Cold Rolling ◽  
Production Process ◽  
Rolling Mill ◽  
Pure Hydrogen ◽  
Security Measures ◽  
Annealing Furnace ◽  
Cold Rolling Mill ◽  
Hydrogen Flow ◽  
Control Functions

The transformed control system of bell-type annealing furnace with pure hydrogen in Pangang Group cold rolling mill is analyzed, and the technological process, the structure of control system, the control principle are introduced. The principles and implementations of important control functions are analyzed in detail, including security measures, the measurement and control of hydrogen flow, temperature control etc. The production practice shows that, the transformed control system stabilizes the production process, improves product quality, optimizes the production process.

Active Disturbance Rejection Control for Hydraulic Position Control System of High-Quality Cold Rolling Mill

2012 ◽  
Vol 572 ◽  
pp. 114-119
Author(s):  
Xiao Fei Xiang ◽  
Zhe Wang ◽  
Fei Zhang ◽  
Li Zhao
Keyword(s):  
Control System ◽  
Cold Rolling ◽  
Disturbance Rejection ◽  
Rolling Mill ◽  
Position Control ◽  
Tracking System ◽  
Cold Rolling Mill ◽  
Stability Margins ◽  
Active Disturbance Rejection ◽  
Position Control System

Active disturbance rejection controller (ADRC) instead of the conventional PID controller in the hydraulic position control system is proposed to satisfy high accuracy and speed requirements in cold rolling mill. Based on the simplified model, frequency-domain analysis of the two kinds of controllers is performed. The results show that ADRC produces better performances, such as bandwidth, stability margins. Because of the extended state observer (ESO) that can estimate and compensate the tracking system in real time, ADRC reduces the dependence on accurate mathematical model, improves anti-disturbance capability of the system, and maintains good dynamic characteristics. The simulation results verified the effect of the conclusion.

THE MODEL OF THE CONTROL SYSTEM OF STRIP THICKNESS ON PRESSURE SCREWS OF THE FIRST STAND COLD ROLLING MILL

2016 ◽  
Vol 23 (99) ◽  
pp. 10-16
Author(s):  
Oleksii P. Chornyi ◽  
◽  
Sergey A. Debelyy ◽  
Leonid G. Limonov ◽  
Galina A. Sivjakova ◽  
...  
Keyword(s):  
Control System ◽  
Cold Rolling ◽  
Rolling Mill ◽  
Strip Thickness ◽  
Cold Rolling Mill

Design of a Semi-Real Simulation Platform for the Cold Rolling Mill

2013 ◽  
Vol 395-396 ◽  
pp. 1243-1247
Author(s):  
Gang Zheng ◽  
Bin Ma ◽  
Zhe Yang ◽  
Ding Liu
Keyword(s):  
Control System ◽  
Cold Rolling ◽  
Rolling Mill ◽  
Rolling Force ◽  
Milling Process ◽  
Simulation System ◽  
Simulation Platform ◽  
Cold Rolling Mill ◽  
Online Data ◽  
Simulation Results

We designed a semi-real simulation platform for the cold rolling mill that was composed of Simulation Computer, Simulation System of Field Signal, AGC Control System, Console of Rolling Mill and the Main Control Computer, and built the mathematical models in the Simulation Comuter, for the hydraulic servo system, rolling force and thickness of strip material. In the platform, the Simulation System of Field Signal output the simulation data as standard sensor signal; the AGC Control System is the same as that used in real rolling mill system. We simulated the milling process of real rolling mill system at this platform using the field-recorded online data. The differences between simulation results and those in real system were small. Simulation results show that this simulation platform can be used in the research and optimization of rolling mill control system.

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