Dissertation > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system

The Design and Implementation of Adaptive MPC Control System for Electromagnetic Stirrers

Author ChengXu
Tutor ShenGang
School Huazhong University of Science and Technology
Course Software Engineering
Keywords Model Predictive Control Iterative least-squares method Digital model processing Electromagnetic stirring
Type Master's thesis
Year 2010
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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 .

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