冷轧机组的机电液一体化控制仿真平台的研究

Investigation on Hydromechatronics Control Simulation Platform of Cold Mill

该文研究机电一体化控制平台设计问题。由于对轧机系统缺少综合一体化研究,以某型300单机架可逆冷轧机组为研究对象,在现有工艺参数和实验数据的条件下研究了其机械部分的轧制力,轧制力矩模型和辊缝设定模型。液压部分在综合考虑伺服阀和液压缸的流量特性、管道的动态特性、板带的塑性变形的基础上,建立了两自由度轧机液压压上系统的数学模型,采用了位置环及轧制力环的控制方式,并带有前馈控制、监控补偿、弹跳补偿、磨损补偿等不同控制策略,分析了液压系统的动态特性,并对板厚进行比较。电气部分建立了冷轧机组带弱磁调速的直流电机速度控制系统,建立了机电液一体化的控制仿真平台,并进行仿真。仿真结果与实际300单机架轧机实验检测数据相吻合,表明了上述机电液一体化控制仿真模型真实有效。

In this article, we study the design of mechatronics control platform. Because of the lack of comprehensive integration study on the rolling mill system, a type 300 single - stand reversing cold rolling unit is chosen as the research object to study the rolling force of mechanical parts, the model of rolling moment and intermesh determination, in the condition of existing process parameters and experimental data. For the hydraulic system, by consider- ing the flow characteristics of the servo valve and hydraulic cylinder, the pipelines dynamic characteristics and the stripg plastic deformation, the hydraulic pressure system mathematical model with two -degree -of- freedom is es- tablished. And we utilize the control mode containing position control loop and ring rolling force loop, other control strategies such as feed - forward control, monitoring compensation, bouncing compensation and wear compensation are also contained. For the electrical system, the model of DC motor speed control system with field weakening is es- tablished. Furthermore, the hydromechatronics simulation platform of the cold mill is established, and simulation a- nalysis is carried out. The simulation result is fit with actual experimental testing data of the 300 single - stand mill, which demonstrates that the control simulation model of hydromechatronics is real and effective.