液压缸非线性弹簧力约束下轧机吸振器参数的优化
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摘要
考虑四辊轧机液压缸非线性弹簧力约束的因素,引入吸振器控制装置,建立带有轧机吸振器的轧机辊系振动动力学模型;通过对轧机吸振器基本参数的优化,得出吸振器最优的阻尼系数和刚度系数;仿真分析不同质量、弹簧力、摩擦力对轧机辊系振动幅频特性曲线的影响规律,得到轧机吸振器的最优质量可以有效提高系统稳定性,轧机吸振器的最优弹簧力可以缩小系统的不稳定区域,轧机吸振器的最优摩擦力可以有效降低幅频特性曲线的高度,为有效抑制轧机辊系垂直振动提供理论支持。
Considering the factors that restrict the force of the nonlinear spring of the hydraulic cylinder of the fourhigh mill,the vibration absorber control device is introduced to establish the dynamic model of the rolling mill system with the vibration absorber of the mill. The optimum damping coefficient and stiffness coefficient of the absorber are obtained,through optimizating the basic parameters of the vibration absorber of rolling mill. Simulation analysis of the influence of different mass,spring force and friction force on the amplitude frequency characteristic curve of roll system,the optimal quality of the vibration absorber of rolling mill can effectively improve the stability of the system,the optimal spring force of the vibration absorber of rolling mill can reduce the unstable region of the system,the optimum friction force of the vibration absorber of a rolling mill can effectively reduce the height of the amplitude frequency characteristic curve,the theoretical support is provided for the effective suppression of vertical vibration of rolling mill roll system.
Considering the factors that restrict the force of the nonlinear spring of the hydraulic cylinder of the fourhigh mill,the vibration absorber control device is introduced to establish the dynamic model of the rolling mill system with the vibration absorber of the mill. The optimum damping coefficient and stiffness coefficient of the absorber are obtained,through optimizating the basic parameters of the vibration absorber of rolling mill. Simulation analysis of the influence of different mass,spring force and friction force on the amplitude frequency characteristic curve of roll system,the optimal quality of the vibration absorber of rolling mill can effectively improve the stability of the system,the optimal spring force of the vibration absorber of rolling mill can reduce the unstable region of the system,the optimum friction force of the vibration absorber of a rolling mill can effectively reduce the height of the amplitude frequency characteristic curve,the theoretical support is provided for the effective suppression of vertical vibration of rolling mill roll system.
引文
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[10]高强,房祥波,赵艳青,等.变质量动力吸振器及其减振性能[J].长安大学学报(自然科学版),2013,33(5):109-112.Gao Q,Fang X B,Zhao Y Q,et al.Variable mass dynamic vibration absorber and its performance of vibration reduction[J].Journal of Chang’an University(Natural Science Edition),2013,33(5):109-112.
[11]杨志安,李熙,孟佳佳.改进多尺度法求解环形极板机电耦合强非线性系统主共振的研究[J].振动与冲击,2015,34(19):208-212.Yang Z A,Li X,Meng J J.Improved multi-scale method for primary resonance of an annular plate electromechanical coupled strong nonlinear system[J].Journal of Vibration and Shock,2015,34(19):208-212.
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[2]Niu D,Chen X,Yang J,et al.Disturbance observerbased control for raymond mill grinding process[C]//IEEE International Conference on Industrial Technology.IEEE,2016:1765-1770.
[3]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.Mechanism of the Strip Surface Chatter Marks of the 1220 Cold Rolling Mill[J].Acta Metrologica Sinica,2015,36(6):595-598.
[4]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.Compensative Vibration Model of Roll System Based on Horizontal Vibration of Rolled Piece[J].Acta Metrologica Sinica,2018,39(1):56-60.
[5]Tran X B,Hafizah N,Yanada H.Modeling of dynamic friction behaviors of hydraulic cylinders[J].Mechatronics,2012,22(1):60-79.
[6]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 Mill Rolls Under the Variable Friction[J].Journal of Northeastern University(Natural Science),2013,34(11):1615-1619.
[7]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.Hou Y,Jiang W L,Liu S Y,et al.Research on Influences of Nonlinear Hydraulic Spring Force on Nonlinear Dynamic Behaviors of Electro-hydraulic Servo System[J].China Mechanical Engineering,2015,26(8):1086-1098.
[8]Wehr M,Stockert S,Abel D,et al.Rapid Control Prototyping in Cold Rolling using Piezoelectric Actuators[J].IFAC-PapersOnLine,2016,49(31):55-60.
[9]刘彬,姜甲浩,刘飞,等.受轧件水平振动影响的板带轧机非线性振动特性[J].中国机械工程,2016,27(18):2513-2520.Liu B,Jiang J H,Liu F,et al.Nonlinear Vibration Characteristics of Strip Mill Influenced by Horizontal Vibration of Rolled Piece[J].China Mechanical Engineering,2016,27(18):2513-2520.
[10]高强,房祥波,赵艳青,等.变质量动力吸振器及其减振性能[J].长安大学学报(自然科学版),2013,33(5):109-112.Gao Q,Fang X B,Zhao Y Q,et al.Variable mass dynamic vibration absorber and its performance of vibration reduction[J].Journal of Chang’an University(Natural Science Edition),2013,33(5):109-112.
[11]杨志安,李熙,孟佳佳.改进多尺度法求解环形极板机电耦合强非线性系统主共振的研究[J].振动与冲击,2015,34(19):208-212.Yang Z A,Li X,Meng J J.Improved multi-scale method for primary resonance of an annular plate electromechanical coupled strong nonlinear system[J].Journal of Vibration and Shock,2015,34(19):208-212.
[12]Grigorios A P,Andrew M S.多尺度计算方法:均匀化和平均化[M].郑健龙,李友云,钱国平,译.北京:科学出版社,2010.
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