|
|
Research on Time Delay Feedback of Roll System Based on Vibration Absorber Control |
LIU Bin,WANG Ying-hui,JIANG Jia-lei,LIU Shuang |
School of Electrical Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China |
|
|
Abstract Considering the nonlinear spring force constraint of the four-roll mill hydraulic cylinder, a two-degree-of-freedom rolling mill roll model with a vibration absorber was established. Time-delay feedback control function was introduced. Time-delay feedback control equation for vibration displacement and vibration velocity of rolling mill roller system with vibration absorber was designed. By analyzing the stability of the amplitude limit and amplitude-frequency characteristics of the rolling mills vibration limit loop, the influence of different feedback gain parameters and time-delay parameters on the main system of the rolling mill roll system is obtained. Appropriate increase of the feedback gain coefficient g1 and g2, reduce the delay coefficient τ1 and τ2 can improve the stability and convergence of the system, which provides theoretical support for suppressing mill vibration.
|
Received: 09 October 2018
Published: 29 June 2020
|
|
|
|
|
[1]Niziol J, Swiatoniowski A. Numerical Analysis of the Vertical Vibrations of Rolling Mills and their Negative Effect on the Sheet Quality[J]. Journal of Materials Processing Technology, 2005, 162/163: 546-550.
[2]Brusa E, Lemma L. Numerical and experimental analysis of the dynamic effects in compact cluster mills for cold rolling[J]. Journal of Materials Processing Technology, 2009, 209(5): 2436-2445.
[3]Bayón A, Gascón F, Medina R, et al. On the flexural vibration of cylinders under axial loads: Numerical and experimental study[J]. Journal of sound and vibration, 2012, 331(10): 2315-2333.
[4]Yang X, Li Q, Tong C N, et al. Vertical vibration model for unsteady lubrication in rolls-strip interface of cold rolling mills[J]. Advances in Mechanical Engineering, 2012, 4(12): 1432-1437.
[5]刘彬, 姜甲浩, 刘飞, 等. 基于轧件水平振动的轧机辊系振动补偿模型[J]. 计量学报, 2018, 39(1): 56-60.
Liu B, Jiang J H, Liu F, et al. Roller vibration compensation model of rolling mill based on horizontal vibration of rolling stock[J]. Acta Metrologica Sinica, 2018, 39(1):56-60.
[6]谢长贵, 曾海. 1220冷连轧机带钢表面振纹机理的研究[J]. 计量学报, 2015, 36(6):595-598.
Xie C G, Zeng H. Study on the Mechanism of Surface Vibration of Strip Steel in 1220 Cold Rolling Mill[J]. Acta Metrologica Sinica, 2015, 36(6):595-598.
[7]侯东晓, 彭荣荣, 刘浩然. 变摩擦力下板带轧机辊系垂直-水平耦合振动特性[J]. 东北大学学报(自然科学版), 2013, 34(11): 1615-1619.
Hou D X, Peng R R, Liu H R. Vertical-horizontal coupling vibration characteristics of strip rolling mill under variable friction[J]. Journal of Northeastern University (Natural Science Edition), 2013, 34(11): 1615-1619.
[8]朱勇, 姜万录, 刘思远, 等. 非线性液压弹簧力对电液伺服系统非线性动力学行为影响的研究[J]. 中国机械工程, 2015, 26(8): 1086-1098.
Zhu Y, Jiang W L, Liu S Y, et al. Research on the influence of nonlinear hydraulic spring force on nonlinear dynamic behavior of electro-hydraulic servo system[J]. China Mechanical Engineering, 2015, 26(8): 1086-1098.
[9]Tran X B, Hafizah N, Yanada H. Modeling of dynamic friction behaviors of hydraulic cylinders [J]. Mechatronics, 2012, 22(1): 65-75.
[10]范小彬, 臧勇, 王会刚. 热连轧机垂直振动特性研究[J]. 中国机械工程, 2010, 21(15): 1801-1804.
Fan X B, Zang Y, Wang H G. Research on vertical vibration characteristics of hot strip mill[J]. China Mechanical Engineering, 2010, 21(15):1801-1804.
[11]刘彬, 姜佳磊, 潘贵翔, 等. 基于吸振器控制的两自由度轧机辊系特性研究[J]. 计量学报, 2019, 40(5): 868-874.
Liu B ,Jiang J L, Pan G X, et al. Research on Roller Characteristics of Two Degree of Freedom Rolling Mill Based on Vibration Absorber Control[J]. Acta Metrologica Sinica, 2019, 40(5): 868-874. |
|
|
|