Model Predictive Control Based on Modified Smith Predictor for Networked Control Systems

Sakr, Ahmad; El-Nagar, Ahmad M.; El-Bardini, Mohammad; Sharaf, Mohammed

doi:10.21608/mjeer.2018.63249

	Model Predictive Control Based on Modified Smith Predictor for Networked Control Systems
Menoufia Journal of Electronic Engineering Research
Article 11, Volume 27, Issue 2, July 2018, Page 237-258
Document Type: Original Article
DOI: 10.21608/mjeer.2018.63249
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Authors
Ahmad Sakr¹; Ahmad M. El-Nagar²; Mohammad El-Bardini²; Mohammed Sharaf²
¹Dept. of Control Eng., High Institute of Engineering, Belbies, Egypt
²Dept. of Industrial Electronics and Control Eng., Faculty of Elect., Eng., Menoufia University.
Abstract
This study presents a predictive controller for networked control systems (NCSs), which is a model predictive control (MPC) combined with Smith predictor. The network delays and data dropouts are problems, which greatly weaken the controller performance. In the proposed controller, there are two internal loops. The first is the loop around the MPC with the model of the system, which predicted future outputs. The other is the loop around the plant to give the error between the model and actual plant. The proposed controller is designed for controlling a DC servo system via a network. The practical results based on Matlab/Simulink are established. The practical results show that the performance of the proposed controller is greatly improved over a wide range of networked time delay and data dropouts comparing to other controllers.


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