Adaptive output-feedback control for hydraulic servo position system of rolling mill

被引：0

作者：

Li, Jian-Xiong ^{[1
]}

Fang, Yi-Ming ^{[1
,2
]}

Shi, Sheng-Li ^{[1
]}

机构：

[1] Key Lab. of Industrial Computer Control Engineering of Hebei Province, Yanshan University, Qinhuangdao 066004, China

[2] National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Qinhuangdao 066004, China

来源：

Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2012年 / 16卷 / 01期

关键词：

Cold rolling - Cold rolling mills - Adaptive control systems - Closed loop systems - System stability - Feedback control;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A high-gain observer and parameter estimator based adaptive output feedback control algorithm is proposed for hydraulic servo position system of rolling mill which contains unmeasurable states, unknown parameters and nonlinearies. The constructed high-gain observer is independent on control input and estimates of the unknown parameters, which is only employed to estimate the system state. The designed feedback controller contained two parts: the main feedback part which was used to ensure the system stability and the compensative part which was used to attenuate the external disturbance and some uncertainties. It can be proved that the proposed algorithm can guarantee all the signals of the resulting closed-loop system are bounded, and the boundaries of the system state and its estimation error are defined by the given high-gain. Finally, simulation was carried out on the hydraulic servo position system of 650mm reversing cold-strip rolling mill. And the simulation results show the validity of the proposed method.

引用

页码：104 / 110