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双闭环直流调速系统广泛应用于带钢热连轧等复杂工业过程,该文针对轧机传动系统由于咬钢过程导致的调速系统动态性能下降问题,建立主传动系统机电耦合模型,并利用基于残差生成器的容错控制框架,进行主传动系统的动态补偿控制器设计。选取控制器输出和调速系统输出作为目标控制函数的性能指标约束,采用基于梯度下降的数据驱动方法,实现动态补偿控制器参数矩阵的在线迭代优化,提高电机调速系统在负载扰动影响下的鲁棒性能和抗干扰性能。仿真与实验结果均表明:该算法能够减少电机转速下降幅度,改善传动系统调速性能,提高闭环控制系统稳定性,并能有效缩短带钢头部长度。
Double closed-loop DC speed control system is widely used in complex industrial processes such as hot strip mill. In order to reduce the dynamic performance of speed control system of rolling mill transmission system due to bite-hardening process, the electromechanical coupling model of main drive system is established. Residual error generator fault-tolerant control framework, the main drive system of dynamic compensation controller design. The output of the controller and the output of the speed governing system are selected as the performance constraints of the target control function. The data-driven method based on the gradient descent is adopted to realize the online iteration optimization of the dynamic compensation controller parameter matrix and improve the performance of the motor speed regulation system under the influence of the load disturbance Robust performance and anti-jamming performance. Simulation and experimental results show that this algorithm can reduce the decrease of motor speed, improve the speed regulation performance of the transmission system, improve the stability of the closed-loop control system and shorten the head length effectively.