The coupling model and robust controller design of vertical system in rolling mills

Author

Yang Xu ; Ding Dawei ; Tong Chaonan

Author_Institution

Sch. of Autom. & Electr. Eng., Univ. of Sci. & Technol. Beijing, Beijing, China

fYear

2015

fDate

23-25 May 2015

Firstpage

3214

Lastpage

3220

Abstract

The mathematical model of electromechanical-hydraulic coupling system in rolling mills, which includes the servo hydraulic system, the mill housing system and rolls system, is established with the consideration of influence on dynamic behavior by nonlinearity and parameter uncertainties. Then the closed-loop gauge control system in frequency form is obtained. The robust controller design is introduced by using quantitative feedback theory, based on several system performance indexes. The influence on system stability by the performance of hydraulic automatic gauge control system is discussed, the reference signal tracking behavior and control performance comparison with PI controller is made via simulation case study, to show the advantage of the proposed control algorithm.

Keywords

closed loop systems; control system synthesis; electrohydraulic control equipment; feedback; gauges; performance index; robust control; rolling mills; servomechanisms; closed-loop gauge control system; electromechanical-hydraulic coupling system; hydraulic automatic gauge control system; mathematical model; mill housing system; quantitative feedback theory; reference signal tracking behavior; robust controller design; rolling mills; servo hydraulic system; system performance indexes; system stability; vertical system; Couplings; Mathematical model; Process control; Servomotors; Strips; Valves; Vibrations; Electromechanical-hydraulic coupling system; Quantitative feedback theory; Rolling mill; Vertical vibration;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference (CCDC), 2015 27th Chinese

Conference_Location

Qingdao

Print_ISBN

978-1-4799-7016-2

Type

conf

DOI

10.1109/CCDC.2015.7162474

Filename

7162474