Adaptive Dynamic Optimization Control for Secondary Cooling of Continuous Casting

Based on the conventional control methods for secondary cooling water distribution of continuous casting,an adaptive dynamic control strategy for water distribution is presented,and a control system for level 2 dynamic water distribution is established which integrates fundamental automatic control,soft-sensing and intelligent control technologies.In the control system,a soft sensing model based on solidification heat transfer theory is developed and applied to predict the surface temperature of billets in real-time.A multivariable PID control algorithm based on auto-tuning neurons is adopted to realize dynamic element tracking control of secondary cooling water distribution and make the billets' surface temperature maintain within target value in continuous casting.The simulation and application results show that the developed model and control algorithm method are effective,and the control system has good performance in tracking the target temperature under casting speed disturbance.