In order to reduce the synchronization error between rolls driven by multiple motors of rolling mill,an integrated con-troller based on state observer cross coupling control is designed.The working mode of double drive of rolling mill is introduced,and the driving motor model and the equivalent mass spring model of motor roll are established.PID controller and state observer are designed to realize the tracking control of a single motor to the set speed.The state observer is used to observe and compensate the load torque,which effectively eliminates the control chattering phenomenon.Based on BP neural network,a cross coupling synchronization controller is designed to eliminate the synchronization error between rolls.The simulation results show that the in-tegrated controller composed of PID control,state observer and cross coupling synchronization controller can effectively reduce the synchronization error between rolls and enhance the control robustness in case of sudden load change.
关键词
同步控制/状态观测器/交叉耦合同步控制/等效质量弹簧模型/鲁棒性
Key words
Synchronization Control/State Observer/Cross Coupled Synchronization Control/Equivalent Mass Spring Model/Robustness
维普
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