轧机主传动机电系统失稳模型研究与自抗扰控制

Research on instability model in main drive of rolling mill based on LADRC

从轧机主传动控制系统的角度出发研究机电系统失稳模型和控制策略.在保证控制系统稳态和动态性能的前提下,对两惯性主传动机电系统模型进行简化,采用线性扩张状态观测器对系统内外总扰动进行观测,通过线性反馈和动态误差反馈方法,达到检测和控制机电系统失稳的目的.介绍了基于模型简化系统微分方程的闭环控制器设计方法,并以仿真和实验进行验证.研究结果表明,本文所提出的方法在解决由轧机机电系统负荷变化引起的机电失稳方面具有显著效果.

From the view of the mill main driving control system,instability model of the electromechanical system and control strategy were researched. In the premise of ensuring the steady and dynamic performance of the control system,the model of main drive of two inertial systems was simplified,the inside and outside disturbance of the system was observed by linear extended state observer. By linear feedback and dynamic error feedback method,the detection and control of electromechanical system failure were achieved. The closed loop controller design method based on simplified differential equation model was proposed,and validated by simulation and experiment. The results show that this study has a significant effect on solving the instability caused by load changes of rolling mill system.