Transactions of Materials and Heat Treatment

Title：Feedback control on main resonance time-lag of coupled vibration system under influence of roller eccentricity

Authors： Zhang Ruicheng Zhao Wenbin Liang Weizheng

Unit： College of Electrical Engineering North China University of Science and Technology

KeyWords： coupled vibration roller eccentricity amplitude-frequency characteristics time-lag feedback control bifurcation

ClassificationCode：TH113.1

year,vol(issue):pagenumber：2025,50(2):185-194

Abstract：

Considering the effects of roller eccentricity and nonlinear friction forces at the rolling interface, the dynamics model of vertical-horizontal coupled nonlinear vibration for the rolling mill was established. Firstly, the amplitude-frequency characteristic equations of the main resonance under the influence of roller eccentricity force were solved by the multi-scale method, and the influences of linear and nonlinear damping, nonlinear stiffness and roller eccentricity force changes on the system were analyzed. Furthermore, the bifurcation characteristics of the system under the main resonance were explored by using the singularity theory, and the transition set of the system and the topology structure under different open-folding parameters were obtained. Finally, a time-lag feedback controller with the combination of linear and nonlinear effects was designed to control the main resonance, and the feasibility of the controller design was verified by numerical simulation. The research results show that the designed controller can effectively control the influence of roller eccentricity on the main resonance of the coupled system.

Funds：

河北省自然科学基金资助项目(F2018209201);唐山市人才资助项目(B202302009);唐山市科技局科技计划项目(22130213G)

作者简介：张瑞成（1975-），男，博士，教授,E-mail：1063974891@qq.com;通信作者：梁卫征（1982-），女，硕士，副教授,E-mail：wzliang1982@126.com

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