Active disturbance rejection control for hydraulic width control system for rough mill

作者：Zou Jun^*; Fu Xin; Yang Hua Yong

来源：Journal of Zhejiang University-Science A(Applied Physics & Engineering), 2007, 8(9): 1429-1434.

DOI：10.1631/jzus.2007.A1429

• active disturbance rejection (ADR)
• hydraulic servo system
• width control
• rough mill

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.

• 出版日期2007-8
• 单位浙江大学