The Design and Implementation of Adaptive MPC Control System for Electromagnetic Stirrers
|School||Huazhong University of Science and Technology|
|Keywords||Model Predictive Control Iterative least-squares method Digital model processing Electromagnetic stirring|
Electromagnetic stirring is an important part of the high quality materials , electromagnetic stirring device control accuracy directly affect the stirring effect . However , manual production of the electromagnetic stirring apparatus difficult to have consistent electrical characteristics , and system parameters may also vary between different batches of products larger , there is a delay in the actual run-time and subject to the inertia effects . Which are created obstacles for stable and fast system reaches the set current frequency . Proportion Integral Derivative ( proportional - integral - derivative controller ) open -loop adjustment algorithm versatility , and use trial and error to find the parameters of the process is time-consuming and labor-intensive . It can be said that the system deployment or actual run is very inconvenient . Thus a need for a new algorithm, not only be able to accurately on the system identification but also makes the system in the case in interference rapidly reach steady , while the adaptive model prediction algorithm will be able to meet this demand . Summarizes some system features based on statistics of large amounts of data , and has adaptive model simulation and testing . Close to the characteristics of the body coil and the internal model , with different parameters tested , the more satisfactory control results . Makes the system to rapidly reach steady does not overshoot . Other achievements include system expansion design an integrated component of the system , so that the the original Linux next bit machine with WinCC ( Siemens industrial control configuration software ) capable of two-way communication , and greatly improve the practical value of the system . Reuse and extension Microwire protocols based on the design and implementation of a three-phase the mixing system control framework , the actual test , a preliminary analysis of the test results ; Research on TMS320F2812 features , realization and optimization of the pulse width modulation procedures, making the pulse width modulation process can completely replace the SA866 pulse width modulation operation .