Milan Matijevic - Academia.edu (original) (raw)

Papers by Milan Matijevic

2018 IEEE Global Engineering Education Conference (EDUCON)

Fluid machinery courses demand, besides theoretical approach, also good practice and laboratory e... more Fluid machinery courses demand, besides theoretical approach, also good practice and laboratory exercises. After course completion, students should be aware of all aspects of good practice and possible problems. Focus of this paper is on hydraulic pumps and designed demonstrational-educational test rig. It is possible to demonstrate and educate students in following: Bernoulli equation, Euler equation for turbomachinery, hydraulic losses, Venturi flow meter — geometry and measurements, cavitation and swirling flow phenomena, as well as in practical issues such as pump testing after international standard ISO 9906, pump control and energy efficiency issues, determination of hydraulic system characteristics, volumetric calibration of the Venturi flow meter, and etc. Students are educated how to choose and connect pressure transmitters, as well as how to calibrate them, how to apply and upgrade developed LabVIEW application. In addition, many components of the installation are transparent, such as pipes at the pipe inlet and pressure side, Venturi flow meter, main and calibration tank, as well as pump spiral casing. Flow visualization and application of modern measurement technique, such as particle image velocimetry are possible in this way. Following experiments of this test rig, students are motivated to generate technical electronic report. In addition are presented virtual experiments, designed in LabVIEW for testing pumps in parallel and series modes.

This paper describes laboratory infrastructure for LEGO robotics mechanisms controlled via Intern... more This paper describes laboratory infrastructure for LEGO robotics mechanisms controlled via Internet protocol in real time. Description of Web laboratory, existing robotics mechanisms that are in use in Faculty of Engineering, University of Kragujevac, and educational potential of laboratory regardless of the prior programming knowledge are given in this work. Web laboratory is of an open structure, which means that users can realize controllers with an arbitrary structure on the available robotics mechanisms with LEGO sensors and actuators in Python programming language. There is catalogue of digital controller examples solved in Python programming language on the web pages of the WEB Laboratory, as well as subroutines for use of LEGO sensors and actuators via Python programming language. Enhancing LEGO sets by the means of 3D printing is also described in this work. Laboratory software is written with MEAN stack and Python programming language.

2018 IEEE Global Engineering Education Conference (EDUCON), 2018

Cyber-physical systems are an integration of physical and virtual reality. In this paper, we prop... more Cyber-physical systems are an integration of physical and virtual reality. In this paper, we propose to design and use of one kind of cyber-physical systems in engineering education. In a limited condition of use physical plants for an experimental educational purpose, we can design and use virtual plants in real-time interaction with hardware for control, measurement, conditioning and acquisition of signals, etc. In our case hardware part of the system is consisting of PLC/HMI devices with connected DC or AC motors with integrated gearboxes and encoders. Virtual part of the system is a controlled plant which is designed in LabVIEW software package. Virtual part of the system is implemented on PC which is connected with PLC/HMI via NI USB 6008 AD/DA card and designed physical interface for signal conditioning. The proposed approach is tested in related to several control engineering educational examples which include designing of the experimental setup with virtual plant, and design, implementation and verification of control law. The mentioned examples are concerning with three different types of control engineering problems: 1) discrete event system, 2) process control system, and 3) mechatronics system. These exercises are prepared for implementation in Go-Lab repository via local WEB Laboratory and for educational materials. Our intention is that students can find on the Internet portal a detail tutorial how can produce and use cyber-physical system for educational needs.

2017 IEEE Global Engineering Education Conference (EDUCON), 2017

This paper describes a study case of student production of laboratory model for engineering educa... more This paper describes a study case of student production of laboratory model for engineering education and its integration in the local remote laboratory. Students guided by teaching staff are passing through all phases of development and testing of engineering product. In our case, student should produce and test a fan. This part of case study concerning with courses in Hydraulic and Pneumatic Machinery, which incorporates, besides fundamental courses, subjects related to the theory, construction, design and testing of the hydraulic machines (pumps, fans, turbines) and turbo-compressors. After this, students should produce fan and plate system, which is well-known a laboratory model for Control Engineering education. In this paper, are also described procedures and benefits of integration of a laboratory model in Go-Lab Portal as a remote controlled experimental setup with materials for teaching and learning.

2018 IEEE Global Engineering Education Conference (EDUCON), 2018

Educational setup for demonstration of a pump operation and determination of full performance cur... more Educational setup for demonstration of a pump operation and determination of full performance curves is presented. The upgrade of the setup has been done in order to implement electronic measurements, data acquisition, computer control, and for preparation of all necessary hardware elements for remote operation via Internet. Used equipment, rationale behind, characteristics and possibilities of the current status of the setup is discussed in detail.

The purpose of this paper is to present organization and development of web laboratory exercises ... more The purpose of this paper is to present organization and development of web laboratory exercises in Web Laboratory, University of Kragujevac. WebLab provides remote access to real laboratory equipment using contemporary computer and network technology for creating the environment that will enable the remote user to perform the required laboratory exercises and control the laboratory equipment. This paper presents pre-requests, architecture and software realization of web based laboratory. Using feedback from survey we will present framework for web laboratory and web lab experiment in order to incorporate practical work and laboratory exercises in integrated e-learning environment. Realizations of two laboratory experiments developed using different platforms are presented, compared and contrasted. Finally some educational results of usage of web laboratory in industrial engineering education are presented.

This paper covers a topic on design and implementation of web-based laboratory for programming an... more This paper covers a topic on design and implementation of web-based laboratory for programming and use of an FPGA device. This web-based laboratory will be used for remote programming and control of an FPGA device designed for use in the course “Introduction to Design and Control of Integrated Circuits for Communication, Sensors and Actuators” in Faculty of Engineering, University of Kragujevac. Because of limited laboratory resources, both human and technical, needed for teaching programming of an FPGA devices on Faculty of Engineering, University of Kragujevac, a web-based laboratory is a viable solution to the problem This approach was proved successful in the past, namely in the course “Measurement and Control” on the Faculty of Engineering, University of Kragujevac, where 190 students have successfully done four laboratory exercises via web-based laboratory on four experimental setups. Experimental setup is consisted of Digilent Nexys2-FPGA development board connected to the US...

The purpose of this paper is to present organization and development of web laboratory exercises ... more The purpose of this paper is to present organization and development of web laboratory exercises in Web Laboratory, University of Kragujevac. WebLab provides remote access to real laboratory equipment using contemporary computer and network technology for creating the environment that will enable the remote user to perform the required laboratory exercises and control the laboratory equipment. This paper presents pre-requests, architecture and software realization of web based laboratory. Using feedback from survey we will present framework for web laboratory and web lab experiment in order to incorporate practical work and laboratory exercises in integrated e-learning environment. Realizations of two laboratory experiments developed using different platforms are presented, compared and contrasted. Finally some educational results of usage of web laboratory in industrial engineering education are presented.

E-learning today is very important alternative way of studying, offering many benefits compared t... more E-learning today is very important alternative way of studying, offering many benefits compared to traditional education requiring physical presence of students at certain place and time. The most important characteristics and benefits of distant learning are time and place independence with individual studying pace of learning educational materials. Very important aspect of education especially in engineering and science is practical laboratory work where students gain very important practical experience about real world systems, their behaviour, laboratory and measurement equipment that is necessary for complete education of the future engineer or scientist. While e-learning is very convenient for independent studying of theoretical materials in any educational area, there is a problem how to do the laboratory work at distance. Possible solutions are simulations of the laboratory conditions, and remote access to real laboratory equipment, not simulations. This paper deals with rem...

This paper describes needs, possibilities, and implementation of open educational resources, whic... more This paper describes needs, possibilities, and implementation of open educational resources, which are supporting the problem-oriented engineering education based on realistic experimental results. Experimental results can partly substitute real experimentation which is necessary part of engineering education and research. Open educational resources and use of blended learning approach can improve relevancy and decrease costs of engineering education for the majority of engineering schools. These approaches include mobile learning concepts. Also, laboratories via the Internet are one way of sharing laboratory resources in order to increase the availability of experimental work. But there are many situations in which the use of Internet-mediated laboratories is nonrealistic. On the other hand, trained staff and hands-on laboratories and experimental installations are very limited resources at all engineering faculties in countries like Serbia. Because of that, the web portals for sha...

Numerous students attend courses in hydraulic turbo pumps at the Faculty of Mechanical Engineerin... more Numerous students attend courses in hydraulic turbo pumps at the Faculty of Mechanical Engineering University of Belgrade, as well as from other faculties. They have oral lectures and exercises with numerical tasks, but also laboratory exercises. This easily driven upgraded installation is very convenient for laboratory exercises for various groups of students. In this paper is demonstrated upgrade of the present installation with transducers instead of U-tube analogue manometers, acquisition system and LabVIEW application for hydraulic pump diagnostics and flow meter calibration. Pressure transducers are also previously calibrated. This installation has three regulating valves and two for tanks emptying. In this way students could form two simple and one complex pipeline. Serious and parallel combinations of pipe lines could be demonstrated, as well as pump by-pass regulation. Hydraulic pipe curve could be formed for one position of the valve on the pump pressure side and various p...

The Challenges of the Digital Transformation in Education, 2019

This paper describes some pedagogical approaches of using electrical motors within engineering st... more This paper describes some pedagogical approaches of using electrical motors within engineering study programs. We are discussing the education of students who are without any electrical engineering background, and who only aim to use motors within different engineering applications like robots, hydro-mechanical or control engineering application. Laboratory support is typically expensive, especially for countries like Serbia, but laboratories are necessary for engineering education. The paper promotes problem-based learning approach which is based on affordable or as cheap as possible laboratory experiments.

Teaching in hydraulic machines at the University of Belgrade, Faculty of Mechanical Engineering, ... more Teaching in hydraulic machines at the University of Belgrade, Faculty of Mechanical Engineering, Chair for Hydraulic Machinery and Energy Systems has a long tradition starting back in the nineteenth century. Numerous experimental test rigs are designed and novel measurement techniques are applied. Students have an ability to design, perform computational fluid dynamics (CFD), manufacture, and test pump units with the supervision of lecturers. This practical work, with concept “do it yourself”, attracts students to develop their abilities in 3D geometry modeling, computational fluid dynamics, computer-aided manufacturing (CAM), and application of novel acquisition and data processing softwares. Parallel to this, they develop a piping system, which will be coupled with the assembled centrifugal pump and run the first test. Afterward, they are stimulated to connect the acquisition system with LabView software. They are supported to develop their own application for pump and hydraulic c...

Smart Industry & Smart Education, 2018

Educational setup for demonstration of a pump operation and determination of full performance cur... more Educational setup for demonstration of a pump operation and determination of full performance curves is presented. The upgrade of the setup has been done in order to implement electronic measurements, data acquisition, computer control, and for preparation of all necessary hardware elements for remote operation via Internet. Used equipment, rationale behind, characteristics and possibilities of the current status of the setup is discussed in detail.

Scientific Technical Review, 2019

This paper studies the closed-loop control of an electromagnetic vibratory feeder (EVF). Two diff... more This paper studies the closed-loop control of an electromagnetic vibratory feeder (EVF). Two different linear design procedures have been employed: a conventional proportional-integral-derivative (PID) controller, and a model predictive control (MPC) controller. All derived results have been validated by computer simulation of a nonlinear mathematical model of the system. The results have proved that both controllers achieve a good tracking of the desired output in a selected operating point. In comparison to the PID controller, the MPC controller is more sensitive to disturbances in the form of changes in the mass of material being transported

Automatika ‒ Journal for Control, Measurement, Electronics, Computing and Communications, 2012

Original scientific paper This paper presents the results of modeling, simulation and experimenta... more Original scientific paper This paper presents the results of modeling, simulation and experimental research of the bulk material flow on the electromagnetic vibratory feeder (EVF). The model of the EVF was implemented in Simulink/Matlab and verified in the experimental research. It has been experimentally confirmed that the bulk material flow rate has its maximal value as far as excitation frequency is equal to the EVF mechanical resonant frequency. For certain bulk material flow rate, average value of excitation coil current of EVF has minimal value when named frequencies are equal. In addition to modeling of the EVF, the main contribution of this paper is implementation of flow control algorithm of bulk material on EVF, experimental verification of the adopted model and defines parameters that enable the selection of energy-efficient operating point of the EVF.

Advances in Intelligent Systems and Computing, 2016

This paper describes the development of a remote laboratory at the University of Kragujevac, with... more This paper describes the development of a remote laboratory at the University of Kragujevac, with examples on testing robot SLAM algorithms. The laboratory is built with the scope of engineering education, but it can be also used by scientist and developers for quick testing of SLAM, maze solving or similar algorithms on real robots. The main goal is to build a remote lab whose price is as low as possible, while still having the necessary functionality, allowing users to access it at any time, and to be sustainable and maintainable for a long period of time.

In this paper we will present the development and implementation of automation, regulation and me... more In this paper we will present the development and implementation of automation, regulation and measurement of heating energy consumption in the University auditorium, which could be used for training and education in different engineering fields (civil engineering, control engineering, process engineering and software engineering). Using a real remotely controlled system, educators are able to demonstrate the real-world principles of thermodynamics, fluid mechanics, and controls as well as to compare data from real systems and from models and software simulations. The presented system is in use at the Faculty of Mechanical Engineering in Kragujevac.

Proceedings of the Fourth …

DESIGN OF A STATIONARY ASYMMETRIC SOLAR CONCENTRATOR FOR HEAT AND ELECTRICITY PRODUCTION Milorad ... more DESIGN OF A STATIONARY ASYMMETRIC SOLAR CONCENTRATOR FOR HEAT AND ELECTRICITY PRODUCTION Milorad Bojić1 , Dobrivoje Ćatić2 , Milan Matijević3 , Ivan Miletić4 , Velimir Stefanović5 1,2,3,4 Faculty of Mechanical Engineering at Kraagujevac, Sestre ...

Online Engineering & Internet of Things, 2017

Servo drives are used in a wide range of industrial applications including metal cutting, packagi... more Servo drives are used in a wide range of industrial applications including metal cutting, packaging, textiles, web-handling, automated assembly and printing. Servomotors in a typical industrial environment are linked to their end effectuators by transmission mechanisms having a finite stiffness. The elastically coupled two-mass motor/load system introduces finite zeros and the pair of conjugate complex poles in the transfer function of the system plant and, thus, brings up the problem of mechanical resonance. The resonance phenomenon may provoke weakly damped oscillations of the link. Vibration suppression and disturbance rejection in torsional systems are important issue in a high performance motion control. For experimental verification of mentioned phenomena at Faculty of Engineering at University of Kragujevac is developed a laboratory model of coupled electrical drives. The paper describes development and potential use of this laboratory model for engineering education and training. This experimental setup is very expensive according to Serbian standards and unique at Faculty of Engineering. In order to enable wider access to the laboratory model, and exemplary teaching/learning materials concerning with the laboratory model, the laboratory model is integrated in WEB laboratory.

2018 IEEE Global Engineering Education Conference (EDUCON)

Fluid machinery courses demand, besides theoretical approach, also good practice and laboratory e... more Fluid machinery courses demand, besides theoretical approach, also good practice and laboratory exercises. After course completion, students should be aware of all aspects of good practice and possible problems. Focus of this paper is on hydraulic pumps and designed demonstrational-educational test rig. It is possible to demonstrate and educate students in following: Bernoulli equation, Euler equation for turbomachinery, hydraulic losses, Venturi flow meter — geometry and measurements, cavitation and swirling flow phenomena, as well as in practical issues such as pump testing after international standard ISO 9906, pump control and energy efficiency issues, determination of hydraulic system characteristics, volumetric calibration of the Venturi flow meter, and etc. Students are educated how to choose and connect pressure transmitters, as well as how to calibrate them, how to apply and upgrade developed LabVIEW application. In addition, many components of the installation are transparent, such as pipes at the pipe inlet and pressure side, Venturi flow meter, main and calibration tank, as well as pump spiral casing. Flow visualization and application of modern measurement technique, such as particle image velocimetry are possible in this way. Following experiments of this test rig, students are motivated to generate technical electronic report. In addition are presented virtual experiments, designed in LabVIEW for testing pumps in parallel and series modes.

This paper describes laboratory infrastructure for LEGO robotics mechanisms controlled via Intern... more This paper describes laboratory infrastructure for LEGO robotics mechanisms controlled via Internet protocol in real time. Description of Web laboratory, existing robotics mechanisms that are in use in Faculty of Engineering, University of Kragujevac, and educational potential of laboratory regardless of the prior programming knowledge are given in this work. Web laboratory is of an open structure, which means that users can realize controllers with an arbitrary structure on the available robotics mechanisms with LEGO sensors and actuators in Python programming language. There is catalogue of digital controller examples solved in Python programming language on the web pages of the WEB Laboratory, as well as subroutines for use of LEGO sensors and actuators via Python programming language. Enhancing LEGO sets by the means of 3D printing is also described in this work. Laboratory software is written with MEAN stack and Python programming language.

2018 IEEE Global Engineering Education Conference (EDUCON), 2018

Cyber-physical systems are an integration of physical and virtual reality. In this paper, we prop... more Cyber-physical systems are an integration of physical and virtual reality. In this paper, we propose to design and use of one kind of cyber-physical systems in engineering education. In a limited condition of use physical plants for an experimental educational purpose, we can design and use virtual plants in real-time interaction with hardware for control, measurement, conditioning and acquisition of signals, etc. In our case hardware part of the system is consisting of PLC/HMI devices with connected DC or AC motors with integrated gearboxes and encoders. Virtual part of the system is a controlled plant which is designed in LabVIEW software package. Virtual part of the system is implemented on PC which is connected with PLC/HMI via NI USB 6008 AD/DA card and designed physical interface for signal conditioning. The proposed approach is tested in related to several control engineering educational examples which include designing of the experimental setup with virtual plant, and design, implementation and verification of control law. The mentioned examples are concerning with three different types of control engineering problems: 1) discrete event system, 2) process control system, and 3) mechatronics system. These exercises are prepared for implementation in Go-Lab repository via local WEB Laboratory and for educational materials. Our intention is that students can find on the Internet portal a detail tutorial how can produce and use cyber-physical system for educational needs.

2017 IEEE Global Engineering Education Conference (EDUCON), 2017

This paper describes a study case of student production of laboratory model for engineering educa... more This paper describes a study case of student production of laboratory model for engineering education and its integration in the local remote laboratory. Students guided by teaching staff are passing through all phases of development and testing of engineering product. In our case, student should produce and test a fan. This part of case study concerning with courses in Hydraulic and Pneumatic Machinery, which incorporates, besides fundamental courses, subjects related to the theory, construction, design and testing of the hydraulic machines (pumps, fans, turbines) and turbo-compressors. After this, students should produce fan and plate system, which is well-known a laboratory model for Control Engineering education. In this paper, are also described procedures and benefits of integration of a laboratory model in Go-Lab Portal as a remote controlled experimental setup with materials for teaching and learning.

2018 IEEE Global Engineering Education Conference (EDUCON), 2018

Educational setup for demonstration of a pump operation and determination of full performance cur... more Educational setup for demonstration of a pump operation and determination of full performance curves is presented. The upgrade of the setup has been done in order to implement electronic measurements, data acquisition, computer control, and for preparation of all necessary hardware elements for remote operation via Internet. Used equipment, rationale behind, characteristics and possibilities of the current status of the setup is discussed in detail.

The purpose of this paper is to present organization and development of web laboratory exercises ... more The purpose of this paper is to present organization and development of web laboratory exercises in Web Laboratory, University of Kragujevac. WebLab provides remote access to real laboratory equipment using contemporary computer and network technology for creating the environment that will enable the remote user to perform the required laboratory exercises and control the laboratory equipment. This paper presents pre-requests, architecture and software realization of web based laboratory. Using feedback from survey we will present framework for web laboratory and web lab experiment in order to incorporate practical work and laboratory exercises in integrated e-learning environment. Realizations of two laboratory experiments developed using different platforms are presented, compared and contrasted. Finally some educational results of usage of web laboratory in industrial engineering education are presented.

This paper covers a topic on design and implementation of web-based laboratory for programming an... more This paper covers a topic on design and implementation of web-based laboratory for programming and use of an FPGA device. This web-based laboratory will be used for remote programming and control of an FPGA device designed for use in the course “Introduction to Design and Control of Integrated Circuits for Communication, Sensors and Actuators” in Faculty of Engineering, University of Kragujevac. Because of limited laboratory resources, both human and technical, needed for teaching programming of an FPGA devices on Faculty of Engineering, University of Kragujevac, a web-based laboratory is a viable solution to the problem This approach was proved successful in the past, namely in the course “Measurement and Control” on the Faculty of Engineering, University of Kragujevac, where 190 students have successfully done four laboratory exercises via web-based laboratory on four experimental setups. Experimental setup is consisted of Digilent Nexys2-FPGA development board connected to the US...

The purpose of this paper is to present organization and development of web laboratory exercises ... more The purpose of this paper is to present organization and development of web laboratory exercises in Web Laboratory, University of Kragujevac. WebLab provides remote access to real laboratory equipment using contemporary computer and network technology for creating the environment that will enable the remote user to perform the required laboratory exercises and control the laboratory equipment. This paper presents pre-requests, architecture and software realization of web based laboratory. Using feedback from survey we will present framework for web laboratory and web lab experiment in order to incorporate practical work and laboratory exercises in integrated e-learning environment. Realizations of two laboratory experiments developed using different platforms are presented, compared and contrasted. Finally some educational results of usage of web laboratory in industrial engineering education are presented.

E-learning today is very important alternative way of studying, offering many benefits compared t... more E-learning today is very important alternative way of studying, offering many benefits compared to traditional education requiring physical presence of students at certain place and time. The most important characteristics and benefits of distant learning are time and place independence with individual studying pace of learning educational materials. Very important aspect of education especially in engineering and science is practical laboratory work where students gain very important practical experience about real world systems, their behaviour, laboratory and measurement equipment that is necessary for complete education of the future engineer or scientist. While e-learning is very convenient for independent studying of theoretical materials in any educational area, there is a problem how to do the laboratory work at distance. Possible solutions are simulations of the laboratory conditions, and remote access to real laboratory equipment, not simulations. This paper deals with rem...

This paper describes needs, possibilities, and implementation of open educational resources, whic... more This paper describes needs, possibilities, and implementation of open educational resources, which are supporting the problem-oriented engineering education based on realistic experimental results. Experimental results can partly substitute real experimentation which is necessary part of engineering education and research. Open educational resources and use of blended learning approach can improve relevancy and decrease costs of engineering education for the majority of engineering schools. These approaches include mobile learning concepts. Also, laboratories via the Internet are one way of sharing laboratory resources in order to increase the availability of experimental work. But there are many situations in which the use of Internet-mediated laboratories is nonrealistic. On the other hand, trained staff and hands-on laboratories and experimental installations are very limited resources at all engineering faculties in countries like Serbia. Because of that, the web portals for sha...

Numerous students attend courses in hydraulic turbo pumps at the Faculty of Mechanical Engineerin... more Numerous students attend courses in hydraulic turbo pumps at the Faculty of Mechanical Engineering University of Belgrade, as well as from other faculties. They have oral lectures and exercises with numerical tasks, but also laboratory exercises. This easily driven upgraded installation is very convenient for laboratory exercises for various groups of students. In this paper is demonstrated upgrade of the present installation with transducers instead of U-tube analogue manometers, acquisition system and LabVIEW application for hydraulic pump diagnostics and flow meter calibration. Pressure transducers are also previously calibrated. This installation has three regulating valves and two for tanks emptying. In this way students could form two simple and one complex pipeline. Serious and parallel combinations of pipe lines could be demonstrated, as well as pump by-pass regulation. Hydraulic pipe curve could be formed for one position of the valve on the pump pressure side and various p...

The Challenges of the Digital Transformation in Education, 2019

This paper describes some pedagogical approaches of using electrical motors within engineering st... more This paper describes some pedagogical approaches of using electrical motors within engineering study programs. We are discussing the education of students who are without any electrical engineering background, and who only aim to use motors within different engineering applications like robots, hydro-mechanical or control engineering application. Laboratory support is typically expensive, especially for countries like Serbia, but laboratories are necessary for engineering education. The paper promotes problem-based learning approach which is based on affordable or as cheap as possible laboratory experiments.

Teaching in hydraulic machines at the University of Belgrade, Faculty of Mechanical Engineering, ... more Teaching in hydraulic machines at the University of Belgrade, Faculty of Mechanical Engineering, Chair for Hydraulic Machinery and Energy Systems has a long tradition starting back in the nineteenth century. Numerous experimental test rigs are designed and novel measurement techniques are applied. Students have an ability to design, perform computational fluid dynamics (CFD), manufacture, and test pump units with the supervision of lecturers. This practical work, with concept “do it yourself”, attracts students to develop their abilities in 3D geometry modeling, computational fluid dynamics, computer-aided manufacturing (CAM), and application of novel acquisition and data processing softwares. Parallel to this, they develop a piping system, which will be coupled with the assembled centrifugal pump and run the first test. Afterward, they are stimulated to connect the acquisition system with LabView software. They are supported to develop their own application for pump and hydraulic c...

Smart Industry & Smart Education, 2018

Educational setup for demonstration of a pump operation and determination of full performance cur... more Educational setup for demonstration of a pump operation and determination of full performance curves is presented. The upgrade of the setup has been done in order to implement electronic measurements, data acquisition, computer control, and for preparation of all necessary hardware elements for remote operation via Internet. Used equipment, rationale behind, characteristics and possibilities of the current status of the setup is discussed in detail.

Scientific Technical Review, 2019

This paper studies the closed-loop control of an electromagnetic vibratory feeder (EVF). Two diff... more This paper studies the closed-loop control of an electromagnetic vibratory feeder (EVF). Two different linear design procedures have been employed: a conventional proportional-integral-derivative (PID) controller, and a model predictive control (MPC) controller. All derived results have been validated by computer simulation of a nonlinear mathematical model of the system. The results have proved that both controllers achieve a good tracking of the desired output in a selected operating point. In comparison to the PID controller, the MPC controller is more sensitive to disturbances in the form of changes in the mass of material being transported

Automatika ‒ Journal for Control, Measurement, Electronics, Computing and Communications, 2012

Original scientific paper This paper presents the results of modeling, simulation and experimenta... more Original scientific paper This paper presents the results of modeling, simulation and experimental research of the bulk material flow on the electromagnetic vibratory feeder (EVF). The model of the EVF was implemented in Simulink/Matlab and verified in the experimental research. It has been experimentally confirmed that the bulk material flow rate has its maximal value as far as excitation frequency is equal to the EVF mechanical resonant frequency. For certain bulk material flow rate, average value of excitation coil current of EVF has minimal value when named frequencies are equal. In addition to modeling of the EVF, the main contribution of this paper is implementation of flow control algorithm of bulk material on EVF, experimental verification of the adopted model and defines parameters that enable the selection of energy-efficient operating point of the EVF.

Advances in Intelligent Systems and Computing, 2016

This paper describes the development of a remote laboratory at the University of Kragujevac, with... more This paper describes the development of a remote laboratory at the University of Kragujevac, with examples on testing robot SLAM algorithms. The laboratory is built with the scope of engineering education, but it can be also used by scientist and developers for quick testing of SLAM, maze solving or similar algorithms on real robots. The main goal is to build a remote lab whose price is as low as possible, while still having the necessary functionality, allowing users to access it at any time, and to be sustainable and maintainable for a long period of time.

In this paper we will present the development and implementation of automation, regulation and me... more In this paper we will present the development and implementation of automation, regulation and measurement of heating energy consumption in the University auditorium, which could be used for training and education in different engineering fields (civil engineering, control engineering, process engineering and software engineering). Using a real remotely controlled system, educators are able to demonstrate the real-world principles of thermodynamics, fluid mechanics, and controls as well as to compare data from real systems and from models and software simulations. The presented system is in use at the Faculty of Mechanical Engineering in Kragujevac.

Proceedings of the Fourth …

DESIGN OF A STATIONARY ASYMMETRIC SOLAR CONCENTRATOR FOR HEAT AND ELECTRICITY PRODUCTION Milorad ... more DESIGN OF A STATIONARY ASYMMETRIC SOLAR CONCENTRATOR FOR HEAT AND ELECTRICITY PRODUCTION Milorad Bojić1 , Dobrivoje Ćatić2 , Milan Matijević3 , Ivan Miletić4 , Velimir Stefanović5 1,2,3,4 Faculty of Mechanical Engineering at Kraagujevac, Sestre ...

Online Engineering & Internet of Things, 2017

Servo drives are used in a wide range of industrial applications including metal cutting, packagi... more Servo drives are used in a wide range of industrial applications including metal cutting, packaging, textiles, web-handling, automated assembly and printing. Servomotors in a typical industrial environment are linked to their end effectuators by transmission mechanisms having a finite stiffness. The elastically coupled two-mass motor/load system introduces finite zeros and the pair of conjugate complex poles in the transfer function of the system plant and, thus, brings up the problem of mechanical resonance. The resonance phenomenon may provoke weakly damped oscillations of the link. Vibration suppression and disturbance rejection in torsional systems are important issue in a high performance motion control. For experimental verification of mentioned phenomena at Faculty of Engineering at University of Kragujevac is developed a laboratory model of coupled electrical drives. The paper describes development and potential use of this laboratory model for engineering education and training. This experimental setup is very expensive according to Serbian standards and unique at Faculty of Engineering. In order to enable wider access to the laboratory model, and exemplary teaching/learning materials concerning with the laboratory model, the laboratory model is integrated in WEB laboratory.