Articles

• Electric Vehicle Modeling and Simulation of Volkswagen Crafter with 2.0 TDI CR Diesel Engine: VW Vehicle 2020 Based PMSM Propulsion

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  Aminu Babangida

  Péter Tamás Szemes

  Views:

  342

  The Internal Combustion Engine (ICE) used by conventional vehicles is one of the major causes of environmental global warming and air pollutions. However, the emission of toxic gases is harmful to the living. Electric propulsion has been developed in modern electric vehicles to replace the ICE.

  The research is aimed at using both Simulink and SIMSCAPE toolboxes in a MATLAB to model the vehicle. This research proposes a Volkswagen (VW) crafter with a 2.0 diesel TDI CR engine, manufactured in 2020. An electric power train, a rear-wheel driven, based on Permanent Magnet Synchronous Motor (PMSM) was designed to replace the front-wheel driven, diesel engine of the VW conventional vehicle.

  In this research, a Nissan leaf battery of a nominal voltage of 360 V, 24 kWh capacity was modeled to serve as the energy source of the overall system. A New European Drive Cycle (NEDC) was used in this research. Another test input such as a ramp was also used to test the vehicle under different road conditions. However, a Proportional Integral (PI) controller was developed to control both the speed of the vehicle and that of the synchronous motor. Different drive cycles were used to test the vehicle. The vehicle demonstrated good tracking capability with each type of test. In addition, this research found out that there is approximately about 19% more benefit in terms of fuel economy of electric vehicles than the conventional vehicles.

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• Benefits of Cyber-Physical Systems Modeling and Simulation with LabView

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  Csaba Szász

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  160

  Cyber-physical systems (CPSs) as part of the Industry 4.0 strategy, represents one of the most challenging research topic for engineers. It’s well known that CPSs integrate at highest level digital technology (computation, control and networking) into physical objects. However, by incorporating various heterogeneous subsystems with different energy levels and functionalities, both analogue and digital signals management, as well as a large scale of communication and information technologies, their modeling and simulation becomes a difficult engineering task. In the past years a huge number of research papers has been dedicated to identify and develop modeling techniques and simulation toolkits being able to handle CPSs complexity. Following these trends, this paper is focused to research and evidence issues linked with the LabView graphically oriented programming technology utilization for CPSs modelling and simulation purposes. Both advantages and shortcomings of this very special technology are studied in order to design and implement a viable software framework being able to model and simulate various CPS structures. As a concrete example, a specific CPS configuration consist of six computer-based mechatronic systems that constitute a laboratory-prototype manufacturing plant has been chosen for LabView-based modeling and simulation. Various virtual instrument-type models of this setup has been conceived and proposed for real-time simulation. It has been concluded then that the application of LabView technology lead to interesting and useful results. The paper specially highlights the benefits and versatility of LabView utilization for complex CPSs modeling and simulation purposes.

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• The Trivial Servomotor and Servo Control System Expressions

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  Csaba Szász

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  141

  In electrical engineering the technical terms “servomotor” and “servo control system” are used since long decades ago. They are generally accepted and wide-range used denominations worldwide in scientific papers, books, advertisements and other publications. In other words, the above two terms become somewhat self-understanding incontestable parts of our technical language. However, this paper emphasizes the idea to discuss the exact and real meaning of these two terms. This because often it happens that in scientific publications there is no made clear difference between the terms “motor” or “servomotor”, respectively “control system” or “servo control system” and that may be a real source of misunderstandings or confusions. For this reason, in first step a thorough overview of the available international scientific literature is presented in the paper in order to evidence the context and conditions in that are used the discussed scientific expressions. Then a careful analysis from technical point of view is unfolded to bring arguments to strengthen the endeavor that a clear difference should be made between the terms “motor” and “servomotor”, respectively “control system” and “servo control system” in demanding technical discussions, as well as in scientific publications. Not at least, there is proposed an original definition of the two discussed terms, reflecting a point of view that may contribute to better understanding and utilization in scientific debates and publications.

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• Performing Canny Edge Detection Using NI LabVIEW Software Environment

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  Zalan Tamas Geresi

  Syeda Adila Afghan

  Péter Tamás Szemes

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  143

  Performing image acquisition and processing can require a high amount of computational resource. In this article, I am discussing the application of Canny Edge Detection algorithm to a live webcam image real-time using NI’s software environment.

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• Analysis of A Tilting Table with Parallel Kinematics

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  István Tüske

  György Hegedűs

  Views:

  130

  This paper presents a workpiece moving unit with parallel kinematics, where its kinematic model is described. Based on the Chebyshev-Grübler-Kutzbach mobility equation the mobility properties of the mechanism are examined. Using the modified Chebyshev-Grübler-Kutzbach criterion the number of degrees of freedom of the workpiece tilting table is determined, after this the screw theory will be presented. As the Chebyshev-Grübler-Kutzbach criterion does not take into account the geometrical characteristics of the examined structure, using the screw theory the workpiece tilting unit will be reanalysed, to take geometrical characteristics into account in determining the degrees of freedom of the structure. Finally, the results of the two theories will be compared in the study of the given kinematic model.

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• Determination of the Calibration Equation for FBG Temperature Sensors

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  Ovidiu Gheorghe Moldovan

  Alin Octavian Moldovan

  Radu Catalin Tarca

  Dan Craciun

  Views:

  153

  This paper presents a brief introduction to FBG sensor technology and its applications. Then the procedure for determining the sensor calibration equations is presented. These equations are determined for each individual sensor and are necessary to perform the trans-oceanographic measurement of the FBG sensor's wavelength variation in the measured parameter.

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