Volume 15, Issue 4 (2016)                   MJEE 2016, 15(4): 35-40 | Back to browse issues page

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Sadat Hosseini M A, Salahshoor K. Design of a New Model Predictive Controller for Networked Control Systems Subjected to Variable Network Time Delays. MJEE. 15 (4) :35-40
URL: http://mjee.modares.ac.ir/article-17-7503-en.html
1- Department of Automation and Instrumentation, Petroleum University of Technology, Ahwaz, Iran
Abstract:   (4588 Views)
In this paper, a novel methodology is proposed to improve performance of the Networked Control System (NCS) in the face of random time-delays, using Model Predictive Controller (MPC) approach. For this purpose, a new state-feedback MPC structure is developed to cope with random network time-delays when the system is subjected to uncertainties with state and control constraints. The main idea is to reduce the disturbing effect of random network time-delays on regulatory performance of the NCS using a new robust formulation in MPC design. A terminal penalty constraint has been added to the finite horizon objective function to guarantee the stability of the system stability. Finally, applicability of the presented method is evaluated in a real pilot plant within a NCS configuration, being realized by an industrial Ethernet and Foundation Fieldbus technology. It is demonstrated that the proposed online methodology is effective to provide a better performance, having faster response, smaller overshoot and stronger robustness compared to the conventional MPC method with less aggressive control actions.  
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Received: 2017/01/28 | Accepted: 2017/04/18 | Published: 2038/01/19

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