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Teaching and Practicing Model Predictive control

IFAC-PapersOnLine 2016年第6期49卷 34-39页

作者： Honc, Daniel Sharma K., Rahul Abraham, Anuj Duek, Frantiek Pappa, Natarajan Department of Process Control Faculty of Electrical Engineering and Informatics University of Pardubice Czech Republic Department of Instrumentation Engineering Madras Institute of Technology Campus Anna University Chennai India

How to explain Model Predictive control (MPC) to students? How to practise it? The paper deals with chain of actions involving teaching, practicing and laboratory application of MPC at University of Pardubice in Czech Republic and at Anna University in India. Individual steps are presented and discussed with examples from educational experience - e.g. modelling and identification, derivation of MPC controller, simulations and laboratory applications. Every phase has a key and weak point as well. Desired results is that students understand better the theoretical concepts and they are able to apply predictive controllers at least for laboratory processes. Derivations and MATLAB scripts are available online. © 2016

关键词： Model predictive control controllers Experiments Identification (control systems) MATLAB Models Optimization Predictive control systems Teaching Czech Republic Educational experiences Laboratory process Matlab scripts Modelling and identifications Predictive controller Weak points

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Study of model-PI predictive controller for coke fractionation tower using Matlab

Study of model-PI predictive controller for coke fractionati...

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International Conference on Robotics, Automation, control and Embedded Systems (RACE)

作者： Amal Govind Uppu Ramachandraiah Process Control & Instrumentation Engineering Hindustan University Chennai India Department of Electronics & Instrumentation Engineering Hindustan University Chennai India

The control of coke fractionation tower has been an issue in both the Chemical engineering and process control field. It requires significant effort in practice to control the parameters in the coke fractionation tower. The performance of the conventional control design and tuning is found to be poor because of the non-linearity in the system. Real-time implementation showed that classical proportional-integral-derivative (PID) control using such models lacks enough robustness. In this study, a Model Predictive control (MPC) associated with a PI control system is used to control the level process in a tower. The control loop contains both the MPC and PI control. This paper suggests the integration of conventional controller and MPC to improve the response of the system. The response of MPC-P and MPC-PI is compared. Result shows that MPC-PI produces good response than MPC-P.

关键词： process control Fractionation Poles and towers control systems Predictive models Liquids Computational modeling

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Review on interaction between electromagnetic field and biological tissues

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Sensors and Transducers 2012年第8期143卷 60-70页

作者： Zakaria, Zulkarnay Abdul Rahim, Ruzairi Lee, Pick Yern Mansor, Muhammad Saiful Badri Abdullah, Azian Azamimi Yaacob, Sazali Mohd. Muji, Siti Zarina Biomedical Electronic Engineering Department School of Mechatronic Engineering Universiti Malaysia Perlis 02600 Arau Perlis Malaysia Process Tomography Research Group Control and Instrumentation Engineering Department Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 Skudai Johor Bahru Malaysia Department of Computer Engineering Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia 86400 Parit Raja Batu Pahat Johor Malaysia

The objective of this paper is to have a look on the interaction of electromagnetic field (EM) on biological tissue from the view of physiological and electrical engineering. The understanding of the phenomena in the interaction may give clear picture on the fundamental concept of dielectric dispersion in term of suitable frequency application and the reaction of biological tissue to it. The other factors such as thermal effect also will be gone through. This review may provide some useful information to the research of magnetic induction tomography on the biological tissue imaging and electromagnetic therapy which apply electromagnetic field at certain frequency in their application. © 2012 IFSA.

关键词： Electromagnetic fields

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Development of parallel and fan-shaped beam mixed-projection optical tomography

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Sensors and Transducers 2012年第5期140卷 36-44页

作者： Mohd Muji, Siti Zarina Abdul Rahim, Ruzairi Fazalul Rahiman, Mohd Hafiz Yunus, Yusry Zakaria, Zulkarnay Nor Ayob, Nor Muzakkir Department of Computer Engineering Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia 86400 Parit Raja Batu Pahat Johor Malaysia Process Tomography Research Group Control and Instrumentation Engineering Department Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 Skudai Johor Bahru Malaysia Tomography Imaging Research Group School of Mechatronic Engineering Universiti Malaysia Perlis 02600 Arau Perlis Malaysia

Parallel and fan shaped beam are two common projections that had been used widely in optical tomography system. These projections never have been merged before in the process of tomography area. In this paper, some enhancement has been made by combining these two modalities in order to solve the ambiguity that arises in the parallel beam projection. © 2012 IFSA.

关键词： Optical tomography

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Dielectric measurement techniques of biological tissue: A review on electrodes perspective

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Sensors and Transducers 2012年第2期137卷 245-253页

作者： Abdul Rahim, Ruzairi Zakaria, Zulkarnay Ibrahim, Maliki Mansor, Muhammad Saiful Badri Mohd Muji, Siti Zarina Nor Ayub, Nor Muzakkir Process Tomography Research Group Control and Instrumentation Engineering Department Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 Skudai Johor Bahru Malaysia Tomography Imaging Research Group School of Mechatronic Engineering Universiti Malaysia Perlis 02600 Arau Perlis Malaysia Department of Computer Engineering Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia 86400 Parit Raja Batu Pahat Johor Malaysia

The aim of this paper is to review the techniques that have been developed in biological tissue dielectric measurement. This manuscript may give a clear picture on the history, development of the technology and also the importance of dielectric measurement of biological tissue in biomedical engineering application especially in tumor detection. Enhancement of these measurement techniques could provide more chances to be integrated in the medical imaging system for more ease and accurate diagnosis system with high quality reconstructed images. With increasing numbers of researches in biological tissue, this review is hoped to be helpful to those who has interest in biological tissue dielectric measurement. © 2012 IFSA.

关键词： Diagnosis

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Application of transmission-mode ultrasonic tomography to identify multiphase flow regime

Application of transmission-mode ultrasonic tomography to id...

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International Conference on Electrical, control and Computer engineering (INECCE)

作者： Y. Abdul Wahab M.A. Ahmad R. Abdul Rahim M.H. Fazalul Rahiman Control and Instrumentation Research Group Faculty of Electrical and Electronics Engineering Universiti Malaysia Pahang Pahang Malaysia Process Tomography Research Group Department of Control and Instrumentation Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia Johor Malaysia

This paper presents an application of ultrasonic tomography where the main objective is to identify the multiphase flow regime which is liquid, gas and solid at once. The system was designing non-invasively by using offline method. The transmission mode with fan shaped beam back projection had been implemented for sensing purposes where 8×8 projections were produced. Beside, the linear back projection (LBP) algorithm was implemented in the software system for the image reconstruction part. Experiments show that the multiphase flow regime for liquid, gas and solid at once can be identifying by using ultrasonic tomography. The results of experiments and possible future improvement were also discussed.

关键词： Acoustics Tomography Solids Image reconstruction Sensors Receivers Ultrasonic variables measurement

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An analysis of sensitivity distribution using two differential excitation potentials in ECT

An analysis of sensitivity distribution using two differenti...

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International Conference on Sensing Technology, ICST

作者： Elmy Johana Mohamad Omar M. Faizan Marwah Ruzairi Abdul Rahim Leow Pei Ling Department of Mechatronic and Robotics Engineering Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia Johor Malaysia Department of Manufacturing and Industrial Engineering Faculty of Mechanical and Manufacturing Engineering Universiti Tun Hussein Onn Malaysia Johor Malaysia Process Tomography Research Group (PROTOM) Department of Control & Instrumentation Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia Skudai Johor Malaysia

The investigation of this work is to analysis the sensitivity distributions using two differential excitation potentials, in order to improve the situation of: (1) non-uniform sensitivity distribution: (2) less sensitivity in the central area and (3) non-linear change in ECT (Electrical Capacitance Tomography) system. Simulation using COMSOL Multiphysics is developed in order to obtain the changes in capacitance inter-electrodes and the permittivity of the dielectric material when two differential excitation potentials were injected. The MATLAB simulation is used to obtain the sensitivity distribution inside the closed pipe from the sensor. Generated phantoms and measured values are presented. Simulation is verified using available experimental data through the existing system, 16- segmented ECT sensor electrodes by PROTOM Research Group UTM, MALAYSIA. By using this technique the linear relationship between the capacitances measured to inter-electrodes and the permittivity dramatically improved and the sensitivity distribution for an opposing electrode pair was increased thus gives the sensitivity distribution in the central area increased. The use of this technique does increase the level of detection signals and the SNR(signal noise to ratio) compared to those achieved using standard single-voltage source method.

关键词： Electrodes Capacitance Electric potential Sensitivity Permittivity Capacitance measurement Image reconstruction

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Hardware developments of an ultrasonic tomography measurement system

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Sensors and Transducers 2011年第1期124卷 56-63页

作者： Arshad Amari, Hudabiyah Abdul Rahim, Ruzairi Fazalul Rahiman, Mohd Hafiz Abdul Rahim, Herlina Pusppanathan, Muhammad Jaysuman Control and Instrumentation Engineering Department Process Tomography Research Group Universiti Teknologi Malaysia 81310 Skudai Johor Bahru Malaysia Tomography Imaging Research Group School of Mechatronic Engineering Universiti Malaysia Perlis Ulu Pauh Campus 02600 Arau Perlis Malaysia FX Sigma Taman Universiti 81300 Skudai Malaysia

This research provides new technique in ultrasonic tomography by using ultrasonic transceivers instead of using separate transmitter-receiver pair. The numbers of sensors or transducers used to acquire data plays an important role to generate high resolution tomography images. The configuration of these sensors is a crucial factor in the efficiency of data acquisition. Instead of using common separated transmitter - receiver, an alternative approach has been taken to use dual functionality ultrasonic transceiver. A prototype design of sensor's jig that will hold 16 transceivers of 14.1mm has been design. Transmission-mode approach with fan beam technique has been used for sensing the flow of gas, liquid and solid. This paper also explains the circuitry designs for the Ultrasonic Tomography System. Copyright © 2011 IFSA.

关键词： Data acquisition

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The linearity of optical tomography: Sensor model and experimental verification

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Sensors and Transducers 2011年第9期132卷 40-46页

作者： Mohd. Muji, Siti Zarina Abdul Rahim, Ruzairi Fazalul Rahiman, Mohd Hafiz Zakaria, Zulkarnay Mohamad, Elmy Johana Karis, Mohd Safirin Department of Computer Engineering Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia 86400 Parit Raja Batu Pahat Johor Malaysia Process Tomography Research Group Control and Instrumentation Engineering Department Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 Skudai Johor Bahru Malaysia Tomography Imaging Research Group School of Mechatronic Engineering Universiti Malaysia Perlis 02600 Arau Perlis Malaysia

The aim of this paper is to show the linearization of optical sensor. Linearity of the sensor response is a must in optical tomography application, which affects the tomogram result. Two types of testing are used namely, testing using voltage parameter and testing with time unit parameter. For the former, the testing is by measuring the voltage when the obstacle is placed between transmitter and receiver. The obstacle diameters are between 0.5 until 3 mm. The latter is also the same testing but the obstacle is bigger than the former which is 59.24 mm and the testing purpose is to measure the time unit spend for the ball when it cut the area of sensing circuit. Both results show a linear relation that proves the optical sensors is suitable for process tomography application. © 2011 IFSA.

关键词： Optical tomography

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Performance Comparisons of New Excitation Coil Design Aspects in Magnetic Induction Tomography (MIT) Applications

Performance Comparisons of New Excitation Coil Design Aspect...

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International Conference on Intelligent Systems, Modelling and Simulation (ISMS)

作者： Zulkarnay Zakaria Muhamad Hafiz Bin Hussin Ruzairi Abdul Rahim Nur Farahiyah Mohammad Azian Azamimi Abdullah Sazali Yaacob Syed Mustafa Kamal Syed Aman Biomedical Electronic Engineering School of Mechatronic Engineering Universiti Malaysia Pedis Arau Perlis Malaysia Process Tomography Research Group (PROTOM) Control and Instrumentation Engineering Department Faculty of Electrical Engineering Universiti Teknologi Malaysia Skudai Johor Malaysia Engineering Services Division Federal Government Administrative Centre Ministry of Health Malaysia Putrajaya Malaysia

Magnetic Induction Tomography (MIT) is a contactless method interested in conductivity properties of the object. In MIT system, excitation coil plays an important role since it generate primary field which then will propagate through the object (in this case is biological tissues) going to be imaged. The main problem in MIT is the magnitude of primary field is very large compare to secondary field generate by the tissue due to tissues low conductivity. This primary field besides disturb the detected secondary signal at the receiver, it also introduce interference to the neighbour's circuit. The main objective of this research is to design an excitation coil which has the capability of focusing the primary field only to the object while at the same time reducing the interference to the neighbour's circuit. The simulation results have shown that through the design, the primary field can be focused and the interference can be reduced.

关键词： Coils Tomography Magnetic resonance imaging Interference Magnetic field measurement Magnetic fields

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