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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2007, Vol. 8 Issue (9): 1429-1434    DOI: 10.1631/jzus.2007.A1429
Civil Engineering & Mechanics     
Active disturbance rejection control for hydraulic width control system for rough mill
ZOU Jun, FU Xin, YANG Hua-yong
Institute State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
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Abstract  The highly nonlinear behavior of the system limits the performance of classical linear proportional and integral (PI) controllers used for hot rolling. An active disturbance rejection controller is proposed in this paper to deal with the nonlinear problem of hydraulic servo system in order to preserve fast response and small overshoot of control system. The active disturbance rejection (ADR) controller is composed of nonlinear tracking differentiator (TD), extended state observer (ESO) and nonlinear feedback (NF) law. An example of the hydraulic edger system case study is investigated to show the effectiveness and robustness of the proposed nonlinear controller, especially, in the circumstance of foreign disturbance and working condition variation, compared with classic PI controller.

Key words： Active disturbance rejection (ADR)      Hydraulic servo system      Width control      Rough mill     
Received: 14 December 2006     
CLC:  TH137  
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ZOU Jun
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Cite this article:

ZOU Jun, FU Xin, YANG Hua-yong. Active disturbance rejection control for hydraulic width control system for rough mill. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2007, 8(9): 1429-1434.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2007.A1429     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2007/V8/I9/1429

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