一种轧辊静压轴承主动控制方法  

An Active Control Method of Roll Hydrostatic Bearing

作　　者：谢磊[1] 计江[1] 师浩浩 Xie Lei;Ji Jiang;Shi Haohao(China National Heavy Machinery Research Institute Co.,Ltd.,Xi'an 710032)

机构地区：[1]中国重型机械研究院股份公司,陕西西安710032

出　　处：《冶金设备》2021年第3期1-6,共6页Metallurgical Equipment

基　　金：陕西省科技统筹创新工程计划项目(2013KTCG01-08)。

摘　　要：轧辊作为高精密轧机的核心部件,对轧机的轧制速度、轧制精度、轧制力、轧制能耗、轧材规格等具有直接重要的影响。随着高精密轧机的轧制速度越来越高、功率的越来越大,生产上对降低振动、提高轧辊稳定性的要求日益剧增,被动地改善轴承性能的方法已经不能满足工程使用要求。对轧辊静压轴承进行主动控制,既可以提高轴承在运行状态下的各项性能指标,也可以直接改善轧机的轧制精度。本文选用具有自学习能力的基于BP神经网络的PID控制器,仿真分析了主动静压轴承的轴心控制效果。以某轧辊支撑用静压轴承为例,分别仿真分析了两种外力作用下的传统静压轴承和主动静压轴承的响应情况。结果验证了本方法在进行轧辊静压轴承主动控制的有效性和精确性,从而为提高轧机轧制精度提供了一种新思路。Roll is the core part of high precision rolling mill,which has a direct and important influence on the rolling speed,rolling accuracy,rolling energy consumption,rolling force,rolling energy consumption and rolling material specification. With the rolling speed and the power of high precision rolling mill becoming higher and higher,the requirements of reducing vibration and improving roll stability in production are increasing rapidly.The method of passively improving bearing performance can not meet the requirements of engineering application.Active control of roll hydrostatic bearing can not only improve the performance index of bearing in running state,but also improve the rolling accuracy of rolling mill directly. In this paper,the PID controller based on BP neural network with self-learning ability is selected to simulate and analyze the axis control effect of active hydrostatic bearing. Taking the hydrostatic bearing used for roller support as an example,the response of traditional hydrostatic bearing and active hydrostatic bearing under two kinds of external forces are simulated and analyzed. The results verify the effectiveness and accuracy of this method in the active control of roll hydrostatic bearing,which provides a new idea for improving the rolling accuracy of rolling mill.

关 键 词：轧辊 静压轴承 控制策略 主动控制 

分 类 号：TG333.17[金属学及工艺—金属压力加工]