变摩擦力下板带轧机垂扭耦合振动控制技术
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摘要
当前对板带轧机垂扭耦合振动的控制过程未考虑变摩擦力的影响,无法对振动特性进行准确分析,导致控制效果不理想;提出一种变摩擦力下基于振动摩擦模型的板带轧机垂扭耦合振动控制技术;将垂扭耦合振动参数作为输入向量,理想状态下变摩擦力作为输出向量,确定垂扭耦合振动参数;采用遗传算法对已确定的最优垂扭耦合振动参数进行辨识,构建振动摩擦模型,完成对垂扭耦合振动特性的准确分析,解决控制过程中的变摩擦力影响问题;利用振动摩擦模型对系统位移响应和频域响应振动特性进行控制,实现板带轧机垂扭耦合振动的控制;与传统控制技术进行对比,得出实验结果,所提控制技术控制精度可达98%,能够减小控制过程的变摩擦影响,可对振动特性进行准确分析,大大提高了控制精度。
At present,the control process of the vertical and reverse coupled vibration of the strip mill does not consider the influence of the variable friction force,and the vibration characteristics cannot be accurately analyzed,resulting in unsatisfactory control effect.A vertical and vibration coupled vibration control technology for strip mill based on vibration friction model is proposed.The vertical-torsional coupled vibration parameter is taken as the input vector,and the frictional force is used as the output vector under ideal conditions to determine the vertical-torsional coupled vibration parameters.The genetic algorithm is used to identify the optimal parameters of the coupled vibration and vibration,and the vibration friction model is constructed to accurately analyze the coupled vibration characteristics of the vertical and torsion,and to solve the problem of variable friction in the control process.The vibration and friction model is used to control the system displacement response and the frequency domain response vibration characteristics to realize the control of the vertical and reverse coupled vibration of the strip mill.Compared with the traditional control technology,the experimental results are obtained.The control precision of the proposed control technology can reach 98%,which can reduce the variable friction effect of the control process.It can accurately analyze the vibration characteristics and greatly improve the control precision.
At present,the control process of the vertical and reverse coupled vibration of the strip mill does not consider the influence of the variable friction force,and the vibration characteristics cannot be accurately analyzed,resulting in unsatisfactory control effect.A vertical and vibration coupled vibration control technology for strip mill based on vibration friction model is proposed.The vertical-torsional coupled vibration parameter is taken as the input vector,and the frictional force is used as the output vector under ideal conditions to determine the vertical-torsional coupled vibration parameters.The genetic algorithm is used to identify the optimal parameters of the coupled vibration and vibration,and the vibration friction model is constructed to accurately analyze the coupled vibration characteristics of the vertical and torsion,and to solve the problem of variable friction in the control process.The vibration and friction model is used to control the system displacement response and the frequency domain response vibration characteristics to realize the control of the vertical and reverse coupled vibration of the strip mill.Compared with the traditional control technology,the experimental results are obtained.The control precision of the proposed control technology can reach 98%,which can reduce the variable friction effect of the control process.It can accurately analyze the vibration characteristics and greatly improve the control precision.
引文
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[11]杨子凯,王建林,于涛,赵利强.基于二阶带通滤波器的加速度计结构化动态建模[J].电子设计工程,2016,24(2):72-75.
[2]彭艳,牛山.板带轧机板形控制性能评价方法综述[J].机械工程学报,2017,53(6):26-44.
[3]姬亚锋,田敏,郭鹏程,等.板带热连轧机活套控制系统优化[J].中国机械工程,2017,28(4):410-414.
[4]刘光明,王麒,陈曦,等.四辊轧机滚动轴承偏载与板形影响因素分析[J].机械设计与制造,2017,13(10):129-132.
[5]王红岩,武裕民,范竟韬,等.镰刀弯控制技术在550mm热轧板带轧机上的应用[J].热加工工艺,2017,18(5):174-175.
[6]何英春.冷轧机液压辊缝控制系统分析[J].辽宁科技学院学报,2017,19(2):4-5.
[7]董敏,马昌飞,杨利辉,等.基于AMESim与ADAMS联合建模的轧机厚控系统仿真[J].机床与液压,2017,45(5):124-128.
[8]王涛,黄庆学,申光宪,等.四辊轧机叼板窜辊问题的解析[J].钢铁,2017,42(11):81-86.
[9]孙孟辉,王益群,贾文华,等.冷带轧机液压AGC系统的MAC-PID串级控制[J].机床与液压,2017,45(20):118-120.
[10]彭艳,牛山.板带轧机板形控制性能评价方法综述[J].机械工程学报,2017,53(6):26-44.
[11]杨子凯,王建林,于涛,赵利强.基于二阶带通滤波器的加速度计结构化动态建模[J].电子设计工程,2016,24(2):72-75.