Application of MN-AGC based on intelligent control in continuous hot rolling

It is always primary object to improve gauge control accuracy in hot strip mills. Limitation based on conventional PID emerges when the controlled object is strong nonlinear, uncertain and multi-constrained features. BP-PID control strategy is introduced in MN-AGC for realizing finished combination of controller parameters. The practical application results have shown the effectiveness of this algorithm. The controller has better adaptability for varieties of model parameters and environment changes, which makes a output follow system input tracks faster.