scholarly journals Improving the Speed Control System of the Main Drive of the Rolling Mill

2018 ◽  
Vol 5 (1) ◽  
pp. 17-21
Keyword(s):  
Control System ◽  
Rolling Mill ◽  
Speed Control ◽  
Speed Control System

H∞ control system for a four-high stand rolling mill

2000 ◽  
Vol 214 (2) ◽  
pp. 79-86
Author(s):  
G G Lisini ◽  
P Toni ◽  
M C Valigi
Keyword(s):  
Control System ◽  
Rolling Mill ◽  
Multiple Input Multiple Output ◽  
Speed Control ◽  
Work Roll ◽  
Quality Level ◽  
Single Input Single Output ◽  
Revolution Speed ◽  
Single Output ◽  
Speed Control System

In steelworks the demand for a higher product quality level has improved the rolling mill process by means of a proper work roll speed control system. Firstly this paper proposes a lumped-parameter hot-rolling mill model. The rolling mill examined is reversible and equipped with an independent speed control system for each work roll (two single-input single-output systems). Therefore, the same revolution speed, essential for a high-quality process, can only be ensured by equal set point values. Nevertheless, during the process, different disturbance load torques cause speed differences and, even if they are not noticeable, rolled section defects cannot be avoided. The second part of the paper shows that it is possible to design a proper H∞ controller, to change the two independent control systems into a more complex multiple-input multiple-output system that will obtain decidedly better performances. Simulation examples have shown improvements.

Digital DC Speed Control System in Mine Hoist Application

2011 ◽  
Vol 219-220 ◽  
pp. 1017-1021
Author(s):  
Rui He ◽  
Yun Ping Ge
Keyword(s):  
Control System ◽  
Closed Loop ◽  
Speed Control ◽  
Closed Loop System ◽  
Pi Regulator ◽  
Control Precision ◽  
Speed Control System ◽  
Digital Trigger ◽  
Mine Hoist ◽  
Work Stability

Mine hoist shoulder important transport tasks. Through the analysis of the main circuit of mine hoist, this paper studies out ASCS digital DC speed control system whose core is microprocessor and whose hardware part constitutes digital trigger and double closed loop system. The software part not only achieves the system's digital PI regulator, logic switching, digital trigger phase shift, pulse channel selection and pulse width setting, but also realizes the systematic detection, monitoring, fault diagnosis, which improves the control precision and work stability of the system.

Vehicle Speed Control System Simulation

2021 ◽  
Author(s):  
Markian Nakonechnyi ◽  
Oleksandr Viter ◽  
Orest Ivakhiv ◽  
Roman Velgan ◽  
Yuriy Hirniak ◽  
...  
Keyword(s):  
Control System ◽  
System Simulation ◽  
Speed Control ◽  
Vehicle Speed ◽  
Speed Control System
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