摘要
为了解决轧机单辊传动系统负荷不平衡问题,首先采用交叉耦合结构实现对双电机的控制,然后在此基础上,设计了新的负荷平衡控制器,该控制器采用模糊PID控制方法,并将传动轴扭矩差与工作辊转速差作为负荷平衡控制器的输入量,同时为了提高电机的同步性能,设计了模糊PID跟踪控制器。最后通过Simulink仿真工具来验证负荷平衡控制器对双电机同步控制效果的影响。仿真结果表明,与将电机电枢电流差作为负荷平衡控制器的输入量,模糊PID或传统PID作为控制器算法的控制策略相比,将传动轴扭矩差与工作辊转速差两个量作为负荷平衡控制器的输入量,模糊PID作为控制器算法的控制策略可以减小超调量,加快响应速度,保证了上下辊出力均衡,同时也能使电机在安全范围内保持平衡。
In order to solve the load imbalance problem of the rolling mill single-roller transmission system,the cross-coupling structure is used to control the dual-motor.Based on this,a new load-balance controller is designed.The controller adopts the fuzzy PID control method.Torque difference of transmission shaft and speed difference of work roll are used as input of load balance controller.At the same time,in order to improve the synchronization performance of the motor,a fuzzy PID tracking controller is designed.Finally,the influence of the input of load balancing controller on the synchronous control effect of dual motors is verified by the simulation analysis of MATLAB/Simulink.The simulation results show that compared with fuzzy PID or traditional PID control strategy,which takes the armature current difference of motor as the input of the load balancing controller,the torque difference of the drive shaft and the speed difference of the work roll as the input of the load balancing controller,and the fuzzy PID as the control strategy of the controller algorithm can reduce overshoot and accelerate response speed,ensuring balanced output of upper and lower rollers,and the response time of the machine speed can also keep the motor balanced in a safe range.
作者
张瑞成
赵铭
ZHANG Rui-cheng;ZHAO Ming(College of Electrical Engineering,North China University of Science and Technology,Hebei Tangshan 063210,China)
出处
《机械设计与制造》
北大核心
2022年第1期37-41,共5页
Machinery Design & Manufacture
基金
河北省自然科学基金资助项目(F2018209201)。
关键词
轧机单辊传动
同步控制
交叉耦合结构
负荷平衡控制器
模糊PID
Rolling Mill Single Roll Transmission
Synchronous Control
Cross-Coupling Structure
Load Balance Controller
Fuzzy PID
