轧机单独传动弹性连接系统多电机同步控制  

Multi-motor Synchronous Control for Separate Drive Elastic Connection System of Rolling Mill

作　　者：张瑞成 高峰 ZHANG Ruicheng;GAO Feng(College of Electrical Engineering,North China University of Science and Technology,Tangshan 063210,Hebei,China)

机构地区：[1]华北理工大学电气工程学院

出　　处：《电气传动》2020年第1期77-82,共6页Electric Drive

基　　金：河北省自然科学基金(F2018209201)

摘　　要：轧辊单独传动系统需要实现上、下拖动电机转速同步。为解决弹性连接引起的扭振与轧制负载扰动会导致同步控制性能降低的问题,建立轧辊单独传动弹性系统模型;将扰动补偿与现有交叉耦合同步控制策略相结合,重构综合扰动并实现补偿反馈,以改善弹性轴连接情况下同步控制系统的动态性能与抗扰能力。仿真结果表明,扰动补偿的加入对抑制扭振效果明显,最高同步误差绝对值在启动时降低到0.2865 rad/s,轧制负载时降低到0.0063 rad/s,同步效果明显提高。The separate drive system of the rolling mill needs to synchronize the rotational speeds of the upper and lower drag motors.In order to solve the problem that the torsional vibration caused by the elastic connection and the rolling load disturbance will lead to the decrease of the synchronous control performance,the separate drive elastic system of the rolling mill was established.Combined with disturbance compensation and existing crosscoupling synchronous control strategy,the synthesized disturbance was reconstructed and feedback compensation for synthesized disturbance was achieved to improve dynamic performance and anti-disturbance capability of the synchronous control system under the connection of the elastic axis.The simulation results show that the addition of disturbance compensation has obvious effect on the suppression of torsional vibration,the absolute value of the highest synchronization error is reduced to 0.2865 rad/s at startup and to 0.0063 rad/s during disturbance of rolling,the synchronization effect is significantly improved.

关 键 词：轧机单独传动系统 弹性连接 交叉耦合同步控制 扭振 扰动补偿 

分 类 号：TH113[机械工程—机械设计及理论] TP271.4[自动化与计算机技术—检测技术与自动化装置]