Compensation method to improve dynamics of hydraulic gap control system

Author

Zhang Hao-yu ; Sun Jie ; Zhang Dian-hua ; Li Xu

Author_Institution

State Key Lab. of Rolling Technol. & Autom., Northeastern Univ., Shenyang, China

fYear

2012

fDate

23-25 May 2012

Firstpage

1536

Lastpage

1541

Abstract

Hydraulic gap control system is the inner loop of automatic gauge control system, and the dynamics of hydraulic gap control system is the key factor for the high precision gauge control effect. The dynamics of hydraulic gap control system is influenced by a non-linear part since the oil flow of valve port depends not only on the control current but also on the changing rolling force. This influence is compensated by a method with compensation factor based on actual rolling force. The application indicates that the dynamics of the hydraulic gap control system is improved greatly with compensation.

Keywords

compensation; flow control; gauges; hydraulic systems; nonlinear control systems; oils; precision engineering; valves; automatic gauge control system; compensation factor; compensation method; control current; high precision gauge control effect; hydraulic gap control system dynamics; inner loop; nonlinear system; oil flow; rolling force; valve port; Accuracy; Control systems; Dynamics; Force; Pistons; Process control; Valves; compensation factor linearization; hydraulic gap control system; port oil flow; rolling force change; system dynamics;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference (CCDC), 2012 24th Chinese

Conference_Location

Taiyuan

Print_ISBN

978-1-4577-2073-4

Type

conf

DOI

10.1109/CCDC.2012.6243008

Filename

6243008