INSTITUTE OF INFORMATION TECHNOLOGIES - BAS
Cybernetics and Information Technologies
Volume 6, No 3. Sofia, 2006, Bulgarian Academy of Sciences
Analysis and Synthesis of IMC-Control Systems
Nina Nikolova, Emil Nikolov
TU- Sofia, Faculty of Automation, Department of Process Control Systems
E-mails: ninan@tu-sofia.bg, nicoloff@tu-sofia.bg
Abstract:
This article is the second part of already published in the previous issue article under the same name. Here as a continuation of the first part, new and original method for equivalent transformation of the studied robust and predictor IMC-systems is presented. Based on this method, new class of IMC-control systems is developed. Their high effectiveness, compared to the effectiveness of the known up till now systems, in control of plants under uncertainty is due to combination of prediction and robust control considering both the irrational and the rational part in the plant’s model. The method is applied to a numeric example.
Keywords:
Internal Model Control, Smith-predictor and robust control systems; frequency method for equivalent synthesis; robust Nyquist-analysis