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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.
The instability model and control strategy of electromechanical system are studied from the perspective of the main drive control system of rolling mill.Based on the premise of ensuring the steady state and dynamic performance of the control system, the two inertial main drive electromechanical system model is simplified, and the linear expansion state observer The total internal and external disturbances are observed, and the purpose of detecting and controlling the instability of the electromechanical system is achieved by linear feedback and dynamic error feedback method. The design method of the closed-loop controller based on the simplified system differential equations is introduced and verified by simulation and experiment. The results show that the proposed method has a significant effect in solving the electromechanical instability caused by the load change of the mill electromechanical system.