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Journal articles on the topic 'Simulink Simscape'
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1
Szabłowski, Stanisław. "Modelowanie fizyczne układów mechatronicznych w środowisku SIMULINK-SIMSCAPE." Dydaktyka Informatyki 12 (2017): 218–23. http://dx.doi.org/10.15584/di.2017.12.26.
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Szántó, András, and Sándor Hajdu. "Járművek menetdinamikai szimulációja Matlab/Simulink környezetben." International Journal of Engineering and Management Sciences 3, no. 2 (2018): 36–41. http://dx.doi.org/10.21791/ijems.2018.2.8.
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A következőkben járművek menetdinamikai szimulációjának a lehetőségeivel foglalkozunk. Az egyszerű kétkerék-modelltől kezdve, a valós futóművel rendelkező jármű tetszőleges útfelület mentén történő mozgásának a szimulációját mutatjuk be. A MATLAB, Simulink, valamint a Simscape nagyon jól használható eszközöket biztosít az előbb említett célok eléréséhez. Az így kapott járműmodell gyakorlati felhasználásának a hasznába is betekintést nyerünk, hiszen a szimuláció során ismert adatok birtokában gyakorlatilag bármilyen szabályozó algoritmus szimulációjára lehetőségünk van: a cikkben egy egyszerű ABS szabályozás kerül bemutatásra.
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Crenganis, Mihai, Alexandru Barsan, Melania Tera, and Anca Chicea. "Dynamic analysis of a five degree of freedom robotic arm using MATLAB-Simulink Simscape." MATEC Web of Conferences 343 (2021): 08004. http://dx.doi.org/10.1051/matecconf/202134308004.
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In this paper, a dynamic analysis for a 5 degree of freedom (DOF) robotic arm with serial topology is presented. The dynamic model of the robot is based on importing a tri-dimensional CAD model of the robot into Simulink®-Simscape™-Multibody™. The dynamic model of the robot in Simscape is a necessary and important step in development of the mechanical structure of the robot. The correct choice of the electric motors is made according to the resistant joint torques determined by running the dynamic analysis. One can import complete CAD assemblies, including all masses, inertias, joints, constraints, and tri-dimensional geometries, into the model block. The first step for executing a dynamic analysis is to resolve the Inverse Kinematics (IK) problem for the redundant robot. The proposed method for solving the inverse kinematic problem for this type of structure is based on a geometric approach and validated afterwards using SimScape Multibody. Solving the inverse kinematics problem is a mandatory step in the dynamic analysis of the robot, this is required to drive the robot on certain user-imposed trajectories. The dynamic model of the serial robot is necessary for the simulation of motion, analysis of the robot’s structure and design of optimal control algorithms.
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Sun, Jun, Bin Bin Qian, Xian Jun Qin, and Yuan Huang. "Modeling and Simulation of Kollmorgen Motor Movement Control System Based on SimScape." Applied Mechanics and Materials 713-715 (January 2015): 872–75. http://dx.doi.org/10.4028/www.scientific.net/amm.713-715.872.
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To verify and analyze the dynamics model of servomotor and improve the efficiency of modeling and analysis, we research system of modeling and simulation on kollmorgen AKM41H servomotor in SimScape. According to the driving principle and mathematical model of DC servomotor, Simulink combined with SimScape and Solidworks part will conduct Control system simulation and analysis. By analyzing the frequency curve, we know that dynamics model of Kollmorgen servomotor is accurate. Semi-physical simulation based on SimScape, the angle of motor shaft can be fast and accurate to get the prespecified value. Parameters of feedback control system are selected reasonably, adjust the motor shaft’s speed so that it reduces to zero band. Research shows that SimScape combined with Solidworks take semi-physical simulation experiment. It can support simulation that is different complex engineering project. Compared with the traditional simulation model is more practical and analysis and modeling is more efficiency.
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Baghdadi, Mohamed, Elmostafa Elwarraki, Naoual Mijlad, and Imane Ait Ayad. "SIMSCAPE Electrical Modelling of the IGBT with Parameter Optimization Using Genetic Algorithm." Journal of Electrical and Computer Engineering 2021 (May 4, 2021): 1–11. http://dx.doi.org/10.1155/2021/6665384.
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The concept introduced by MathWorks in the Simscape product is the link representation between the SIMSCAPE library components that correspond to physical connections transmitting power. In this paper, a power insulated-gate bipolar transistor (IGBT) model using MATLAB graphical software is reproduced. An electrical IGBT behavior model using the Simscape Electronics library components is developed and analyzed. This model is parameterized using the constructor datasheet to ensure a good representation of the dynamic and static IGBT behaviors. An extraction and optimization studies of the IGBT model parameters using a stochastic algorithm implemented in Matlab are presented. The proposed method is based on the Genetic Algorithm (GA) to perfectly extract and optimize the model parameters using the mathematical model circuit equations and the provided datasheet characteristics. A simulation in the Matlab/Simulink environment and a comparison with the experimental results for an IGBT device example are carried out to demonstrate the proposed model accuracy.
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Rahman, Mohd Azizi Abdul, and Makoto Mizukawa. "Model-Based Development and Simulation for Robotic Systems with SysML, Simulink and Simscape Profiles." International Journal of Advanced Robotic Systems 10, no. 2 (2013): 112. http://dx.doi.org/10.5772/55533.
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Shao, Nian, Shuguang Zhang, and Hui Liang. "Model-based safety analysis of a control system using Simulink and Simscape extended models." MATEC Web of Conferences 139 (2017): 00219. http://dx.doi.org/10.1051/matecconf/201713900219.
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Alkamachi, Ahmed. "Integrated SolidWorks and Simscape platform for the design and control of an inverted pendulum system." Journal of Electrical Engineering 71, no. 2 (2020): 122–26. http://dx.doi.org/10.2478/jee-2020-0018.
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AbstractA single inverted pendulum on a cart (SIPC) is designed and modeled physically using SolidWorks. The model is then exported to the Simulink environment to form a Simscape model for simulation and test purposes. This type of modeling uses a physical grid tactic to model mechanical structures. It requires connection of the physical elements with physical signal converter to define the implicit system dynamics to be modeled. The integration between the SolidWorks and Simscape eliminates the need of deriving the mathematical model and provides a platform for the rapid controller design for the system. State feedback control scheme is proposed, designed, and tuned aiming to maintain the pendulum in the upright place while tracking the desired cart position. Several simulation cases are studied to prove the controller abilities. In order to examine the controller robustness, disturbance rejection and noise attenuation capabilities are also discovered.
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Liao, Hong Bo, Shi Xun Fan, Mo Hei, and Da Peng Fan. "Research on Modeling and Simulation Analysis of Direct Drive System in Simulink and Simscape Environment." Key Engineering Materials 579-580 (September 2013): 699–705. http://dx.doi.org/10.4028/www.scientific.net/kem.579-580.699.
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In order to verify and analysis the theory model of direct drive system, the methods of computer-aided modeling and simulation analysis in Simulink and Simscape environment were presented. Based on the theory model of direct drive system, simulation models were constructed in two kinds of different environment, the model building and analysis process were detail introduced, the simulation results were compared and experiment verification. The simulation and experiment results showed that the relative error of time domain response of simulation results under two kinds of environment is within 4%, the relative error of frequency domain response is within 4.5%. Comparing simulation results under Simulink environment with the real test results, the relative error of time domain response is within 20%, and the relative error of frequency domain response is within 15%. The consistence and correctness of the two methods are verified, the proposed methods can also be applied to modeling and simulation analysis of others Mechatronic servo system.
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Tomasikova, Maria, Dusan Sojcak, Aleksander Nieoczym, and Frantisek Brumercik. "Experimental Data in Vehicle Modeling." LOGI – Scientific Journal on Transport and Logistics 8, no. 1 (2017): 82–87. http://dx.doi.org/10.1515/logi-2017-0010.
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Abstract This article is about a vehicle model which is created in software Matlab Simscape Driveline. In this model the motor is created like a subsystem by Simulink blocks and input data were measured by single roller dynamometer for cars (SRD). Measured data are the input into the model by Lookup Table block. The vehicle model is made by gear, differential, tire and vehicle body blocks. We studied the forces on tires, the vehicle velocity and the slip.
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Popardovský, Vladimír, Peter Bondra, and Lukáš Novotný. "Proposal of unmanned ground vehicle powered by fuel cell." Science & Military 16, no. 1 (2021): 5–13. http://dx.doi.org/10.52651/sam.a.2021.1.5-13.
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The presented article deals with the design of an unmanned ground vehicle (UGV) with electric drive, using a fuel cell as a source of electricity. The introduction describes the principle of the fuel cell, followed by the design of the UGV propulsion system. The UGV design, taking into account specific technical parameters, is processed into a model in the simulation environment MATLAB / Simulink / Simscape. Simulation results are presented in graphical form of selected physical quantities over time.
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Tamburrano, Paolo, Pietro De Palma, Andrew R. Plummer, Elia Distaso, and Riccardo Amirante. "Simulink Modelling For Simulating Intensive Care Mechanical Ventilators." E3S Web of Conferences 197 (2020): 07007. http://dx.doi.org/10.1051/e3sconf/202019707007.
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This paper proposes a modelling approach for simulating mechanical ventilators for intensive care units (ICUs). The shortage of ventilators during the coronavirus disease 2019 (COVID-19) pandemic has focused attention on their design and performance. The proposed modelling approach consists in using the Mathworks® Simulink software tool and the SimScape Fluids (gas) library, so as to use well-established subroutines to simulate all the pneumatic components of typical ventilators for ICUs, such as the pressure reducing valves, pressure relief valves, check valves, tanks, ON\OFF and proportional directional valves, etc. The patient is simulated by setting the values of lung compliance and pressure losses occurring in the trachea. The proposed modelling approach is used in this paper to simulate a pneumatic scheme employed in some commercial ventilators. The model allows a very accurate prediction of fundamental parameters, such as the inspiratory flow rate, the inspiratory pressure, the end-expiratory pressure. Since the software interface is user-friendly, it can easily be used by manufacturers to correctly choose the geometrical and operating parameters of the components during the design stage or to assess different scenarios.
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Usman, Hamisu, S. M. Lawal, and R. S. Shehu. "Behavioral Characteristics of Photovoltaic Cell with Different Irradiation in Matlab/Simuling/Simscape Environment." International Letters of Chemistry, Physics and Astronomy 36 (July 2014): 316–26. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.36.316.
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Photovoltaic technology is one of the fastest growing energy among the different type of renewable energies that are available for electricity generation. This is due to the availability of the natural sun rise, and the non polluted energy that is free from emission of carbon dioxide (CO2). This paper presents a typical modeling of photovoltaic cell under different irradiations level, in order to monitor the behavior of the (Voltage-Current) V-I and (Power-Voltage) P-V characteristics. The simulation of the proposed model was performed in MATLAB/SIMULINK and Simscape environment. Single diode model of the PV system was presented in the mathematical modeling of the proposed system. Simulation results of different I-V and P-V characteristics were also presented.
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Viet, Luong Quoc, and Jai Hyuk Hwang. "A Semi-Active Controller for an Aircraft Landing Gear Equipped with Magnetorheological Damper." Applied Mechanics and Materials 894 (September 2019): 29–33. http://dx.doi.org/10.4028/www.scientific.net/amm.894.29.
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The magnetorheological (MR) damper is the newest approach to replace the traditional passive damper which cannot change their dynamics in response to different operating conditions of the aircraft landing gear. This paper presents the simulation study of a semi-active controller for a landing gear equipped MR damper. Furthermore, a new method combined skyhook control with force control, called hybrid control, is developed to improve the performance of the MR damper landing gear. Finally, the numerical simulation result of the landing gear using SIMSCAPE-Simulink is discussed.
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Kardos, Tamás, and Dénes Nimród Kutasi. "Hybrid modeling and model based control of the four tank process." MACRo 2015 2, no. 1 (2017): 67–78. http://dx.doi.org/10.1515/macro-2017-0008.
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AbstractHybrid systems contain both continuous dynamics and discrete elements, where discrete transitions happen between different continuous operating modes as a consequence of certain events. The notion of modeling these types of systems is discussed in regard to the four tank process, which has hybrid and nonlinear characteristics. This paper describes the modeling of this system in Simscape software and a hybrid model is created as well, with a hybrid controller being built around it that includes finite-state automata and PI controller. Simulations implemented in Matlab Simulink software prove the viability and correctitude of the method presented.
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Hoodorozhkov, Sergey, Andrey Krasilnikov, and Evgeney Zakhlebayev. "Digital simulation of physical processes in vehicles engine power units." SHS Web of Conferences 44 (2018): 00038. http://dx.doi.org/10.1051/shsconf/20184400038.
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This article studies the issues of digital simulation of physical operating processes in vehicles transmission. Simulation of dynamic processes is carried out in power transmissions at the design stage. The procedure for using the digital packages such as MATLab – Simulink and Simscape was considered for the numerical simulation of dynamic processes in mechanical systems based on the example of the theoretical calculation of K-744 tractor transmission dynamics. A digital model of K-744 tractor transmission is constructed, its calculation scheme is given, the initial characteristics are determined. A digital model of the tractor engine was created by means of the Simulink package. A nature of change in tractor engine torqueis determined by it. The calculated analysis of normal transmission frequencies is performed. Forced torsional vibrations are calculated in the tractor change gearbox generated by the vehicle engine operation. The conditions of resonance in the transmission are analyzed. The unfavorable modes of joint operation of the engine and the gearbox are determined for K-744 tractor.
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Kareem, M. W., Khairul Habib, and S. I. Gilani. "Lumped Components Modeling of Double Pass Solar Collector with Porous Matrixes." Applied Mechanics and Materials 465-466 (December 2013): 216–20. http://dx.doi.org/10.4028/www.scientific.net/amm.465-466.216.
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In this report, the modeling and simulation of a double pass solar air absorber was carried out using combination of Simscape and Simulink modeling tools. The solar system air mass flow rate and the porous media were critically investigated by using local weather data of Seri Iskandar, Perak, Malaysia. Optimal inlet air flow rate of 0.034kgm-2s-1 was obtained and one of the packed beds, sandstone extended the thermal transfer period of solar collector system by 1150s which displayed good agreement with the reported model and experimental outcomes. The results obtained have shown that it is a promising alternative tool for solar thermal experimentation modeling.
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Li, Qi, Wen Bin Zhang, Ping Li, Shi Su, Yu Ting Yan, and Yang Yang. "On the Research of Identification Methods for Supercapacitor Model Parameters." Applied Mechanics and Materials 740 (March 2015): 499–502. http://dx.doi.org/10.4028/www.scientific.net/amm.740.499.
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The accuracy of model becomes increasingly demanding in the simulation system with the development of supercapacitor. The traditional methods of parameters identification in supercapacitor modeling are very complicated. This paper presents an easy and new method by the Simulink tool. The experimental data for the identification of the model parameters was obtained through the constant charge-discharge experiments. Then the variable capacitor of the supercapacitor equivalent circuit model was modeled in Simscape Language, so parameters directly got with Parameter estimation in Sumulink. Simulation results were presented and compared experimental data. And the result showed that the new method was not only speeded the identification of parameters, but also improved the modeling precision up to 98%.
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SULISTYAWATI, NUR, FAHMIZAL FAHMIZAL, and IOTA NATHASYA. "Kendali Kecepatan Motor DC dengan Buck Converter menggunakan Full State Feedback-Pole Placement." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 9, no. 2 (2021): 415. http://dx.doi.org/10.26760/elkomika.v9i2.415.
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ABSTRAKMakalah ini menyajikan penjelasan tentang penerepan full state feedback menggunakan metode pole placement pada sistem buck converter dengan Motor DC. Penambahan komponen buck converter diharapkan dapat membantu menaikkan nilai efisiensi sistem dan memperpanjang umur komponen switch yang digunakan. Namun terkadang sistem ini masih memerlukan kendali untuk dapat memaksimalkan perfoma sistem baik dari segi rising time, settling time maupun error steady state dari sistem. Simulasi kendali full state feedback menggunakan pole placement disimulasikan dengan pemodelan buck converter dan motor DC menggunakan Simscape dan Simulink pada Matlab. Dari hasil simulasi diperoleh bahwa kendali pole placement mampu menghasilkan kondisi rising time 1.4508s, settling time 2.5729s sedangkan kendali LQR lebih lambat 0.9524s untuk rising time dan 4.3603s untuk settling time saat diuji dengan sinyal step. Selain itu, penambahan pre compensator (Nbar) telah membuat sistem mampu mencapai nilai referensi yang diharapkan (error steady state menuju nol).Kata kunci: Motor DC, Buck Converter, Pole Placement. ABSTRACTThis paper presents an explanation of the advanced full state feedback using the pole placement method in a buck converter system with a DC motor. The addition of buck converter components is expected to help increase the value of system efficiency and extend the life of the switch components used. However, sometimes this system still requires control to be able to maximize system performance in terms of both the rising time, the settling time and the steady state error of the system. Full state feedback control simulation using pole placement is simulated by modeling the buck converter and DC motor using Simscape and Simulink in Matlab. The simulation results show that the pole placement control is capable of producing a rising time of 1.4508s, settling time of 2.5729s, while LQR control is 0.9524s slower for rising time and 4.3603s for settling time when tested with step signals. In addition, the addition of a pre compensator (Nbar) has made the system able to reach the expected reference value (steady state error goes to zero).Keywords: DC Motor, Buck Converter, Pole Placement.
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Sami, Saif Sabah, Zeyad Assi Obaid, Mazin T. Muhssin, and Ali N. Hussain. "Detailed modelling and simulation of different DC motor types for research and educational purposes." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 2 (2021): 703. http://dx.doi.org/10.11591/ijpeds.v12.i2.pp703-714.
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The devastating impact of Covid-19 pandemic accelerated the shift to e-learning in the higher education. Particularly in the electrical machines courses, that often include laboratory experiments. However, no detailed models of DC motors, developed in MATLAB/Simulink, were reported in literature. Hence, in this paper, a virtual laboratory consist of models of DC motors was built for the first time. The proposed models are easy to use and modify, and allow all machines’ parameters to be altered for students to replicate easily to support and enhance the learning process of electrical machines courses. Consequently, the developed models are effective tools for educational and research purposes. Dynamic models of DC motors were developed using MATLAB/Simulink, namely separately excited, permanent magnet, shunt-connected and series-connected DC motors. Two different approaches for modelling were proposed, the block diagram representation and Simscape based models. The two modelling methods were validated against the built-in DC machine model. The proposed models are easy to use and modify, and allow all machines’ parameters to be altered for monitoring and comparison purposes. Consequently, the developed models are effective tools for research and educational purposes.
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Ilie, Constantin Ovidiu, Octavian Alexa, Ion Lespezeanu, Marin Marinescu, and Dănuț Grosu. "Modeling the Work of a Torque Converter during the Getaway Process of a Vehicle." Applied Mechanics and Materials 823 (January 2016): 253–58. http://dx.doi.org/10.4028/www.scientific.net/amm.823.253.
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The paper aims at issuing of a virtual simulation model that would be able to assess the actual working modes of a torque converter, both hydraulically and mechanically. To estimating the dynamic behavior we used the assessing equations of the converter’s performance coefficients. The rotational inertial phenomena due to the transient regimes during the getaway phase are also considered. The modeling process assumed the use of the pre-defined structures of the Simulink-Matlab and Simscape-Matlab modules. The virtual model of the torque converter was fed with the experimentally determined, performance parameters as input. The input also consisted of the inertia moments of the converter’s components. Eventually, by interrogating the simulation model, we’ve got and plotted the time histories of the converter’s impeller and turbine angular velocities during the vehicle’s getaway process.
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Duan, Qichang, Mingxuan Mao, Pan Duan, and Bei Hu. "An intelligent algorithm for maximum power point tracking in photovoltaic system under partial shading conditions." Transactions of the Institute of Measurement and Control 39, no. 2 (2016): 244–56. http://dx.doi.org/10.1177/0142331215606514.
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In a photovoltaic (PV) system, maximum power point tracking (MPPT) under partial shading (PS) conditions is a challenging task due to the presence of multiple peaks in the power voltage characteristics. This paper puts forward a novel artificial fish-swarm algorithm (FSA), which is optimized by particle swarm optimization with extended memory (PSOEM-FSA). In this algorithm, both the velocity inertia factor and the memory and learning capacity of PSOEM are introduced into the FSA. To validate the effectiveness of the novel algorithm, the PV system along with the proposed MPPT algorithm was simulated using Matlab/Simulink Simscape tool box. The simulation results show that the proposed approach is effective in MPPT under PS conditions and has a more stable performance when compared with the traditional methods in convergence speed and searching precision.
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Tamburrano, Paolo, Elia Distaso, Andrew R. Plummer, Francesco Sciatti, Pietro De Palma, and Riccardo Amirante. "Direct Drive Servovalves Actuated by Amplified Piezo-Stacks: Assessment through a Detailed Numerical Analysis." Actuators 10, no. 7 (2021): 156. http://dx.doi.org/10.3390/act10070156.
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This paper presents a feasibility study using commercially available amplified piezo-stacks for the direct actuation of four-way three-position (4/3) direct drive servovalves. The prospect of using amplified piezo-stacks in place of linear force motors is very attractive by virtue of their fast response speed and low weight. Piezo-stacks equipped with mechanical amplification systems can give levels of displacement suitable for this application. A very effective amplification system has recently been produced by some manufacturers and is based on a temperature-independent diamond structure. This paper details simulations of a 4/3 servovalve directly actuated by such a piezoelectric actuator with a diamond structure. To this end, well-established equations, implemented in Simulink by means of the libraries of Simscape Fluids, are used. The proposed architecture shows simplicity of construction; in addition, very good step response speed and frequency response are predicted by the simulations.
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Labidi, Z. R., H. Schulte, and A. Mami. "A Model-Based Approach of DC-DC Converters Dedicated to Controller Design Applications for Photovoltaic Generators." Engineering, Technology & Applied Science Research 9, no. 4 (2019): 4371–76. http://dx.doi.org/10.48084/etasr.2829.
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In this paper, a model-based approach of DC-DC converters dedicated to controller design applications for photovoltaic generators is introduced. The paper provides a mathematic averaging model, based on the state space method for DC-DC converters that is used as an adaptation level in photovoltaic generators. This modeling allows the dynamics of the system to be described by presenting a reliable model to be used for oriented controller design. The two most needed topologies of DC-DC converters are proposed, buck and buck-boost, and an overview of integral state feedback controller design using a model-based approach for a boost converter connected to a photovoltaic generator described in our previous published work is provided. The model-based conception of both converter types is analyzed for optimal use in control-oriented design. The validation of each model is demonstrated by comparative curves represented by a detailed plant model using simscape devices available and implemented in Simulink/Matlab.
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Mao, Mingxuan, Qichang Duan, Pan Duan, and Bei Hu. "Comprehensive improvement of artificial fish swarm algorithm for global MPPT in PV system under partial shading conditions." Transactions of the Institute of Measurement and Control 40, no. 7 (2017): 2178–99. http://dx.doi.org/10.1177/0142331217697374.
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Due to the non-linear characteristics I–V of the photovoltaic (PV) curve, the tracking of the maximum power point (MPP) under partial shading (PS) conditions can sometimes be a challenging task. This paper presents a modified artificial fish swarm algorithm (AFSA) for MPP tracking (MPPT) in PV modules under PS. In this algorithm, the AFSA optimized by particle swarm optimization (PSO) algorithm with extended memory (PSOEM-FSA) is improved by hybridizing it with adaptive visual and step, and the resulting algorithm is a comprehensive improvement on the AFSA (abbreviated as CIAFSA). Combining the searching capabilities of the PSOEM-FSA and the self-learning ability of adaptive visual and step for AFSA, CIAFSA is developed. To validate the effectiveness of this novel MPPT technique, the PV system along with the proposed MPPT algorithm is simulated using the Matlab/Simulink Simscape toolbox. Results show that the proposed approach is more effective in MPPT in PV systems under PS conditions when compared with other methods in searching precision.
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Muhammed, Alhelou, and Alexander Gavrilov. "Managing the handling–comfort contradiction of a quarter-car system using Kalman filter." Transactions of the Institute of Measurement and Control 43, no. 10 (2021): 2292–306. http://dx.doi.org/10.1177/0142331221994951.
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This article introduces a new approach to manage the “handling–comfort” contradiction of a vehicle suspension system. The idea is based on determining a specific time constant that reflects the percentage of suspension damping. This time constant is defined using the measurement of the sprung mass acceleration and the suspension deflection. A distinction is made between the control unit design for a semi-active suspension system and the control unit design for an active suspension system. The semi-active design is based on two sensors and a Kalman filter (KF), while the active design is based on three sensors and a dual-estimation KF. For active suspension, a third sensor was added to measure the acceleration of the unsprung mass. Simulation is carried out in Simulink and Simscape environments. The results of the proposed approach were compared with the results achieved by the hybrid-hook system. Simulation results showed a better efficiency of the proposed approach in driving safety during a “comfort” situation.
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Enany, T. A., W. I. Wahba, and M. A. Moustafa Hassan. "A Remote and Sensorless Stator Winding Temperature Estimation Method for Thermal Protection for Induction Motor." International Journal of System Dynamics Applications 3, no. 3 (2014): 53–72. http://dx.doi.org/10.4018/ijsda.2014070103.
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Three-phase induction motors are the “workhorses” of industry; they are the most widely used electrical machine; because of its simple structure and high reliability. This paper proposes a new technique to model the stator winding of the induction motor in Matlab Simulink® software. This simulation of the induction motor would have the thermal behavior of its stator winding; to study the induction motor temperature estimation using motor parameter-based method. The modified model is used to validate a remote and Sensorless stator winding temperature estimation technique; therefore a thermal protection is obtained for soft-starter-connected to induction motors. The soft-starter is used to inject a DC signal in the induction motor terminal voltage and current. The stator winding resistance/temperature is estimated from DC signal injection by changing the gate drive signals of the Thyristor in the soft starter. The level of the injected DC signal is adjusted by the value of the delay angle. The accuracy of stator winding temperature estimation increased with the increase of DC signal level; however the pulsation of the output torque increased also. The thermal behavior is simulated utilizing a thermal resistor block from the Matlab Simscape™ software. It is used to replace the fixed resistor value of the induction motor model in the Matlab Simulink. The thermal monitoring scheme has been validated from the simulation results of a 7.5 kW induction motor under various loading conditions.
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Jusoh, Mohd Afifi, Mohd Zamri Ibrahim, Muhamad Zalani Daud, Zulkifli Mohd Yusop, and Aliashim Albani. "An Estimation of Hydraulic Power Take-off Unit Parameters for Wave Energy Converter Device Using Non-Evolutionary NLPQL and Evolutionary GA Approaches." Energies 14, no. 1 (2020): 79. http://dx.doi.org/10.3390/en14010079.
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This study is concerned with the application of two major kinds of optimisation algorithms on the hydraulic power take-off (HPTO) model for the wave energy converters (WECs). In general, the HPTO unit’s performance depends on the configuration of its parameters such as hydraulic cylinder size, hydraulic accumulator capacity and pre-charge pressure and hydraulic motor displacement. Conventionally, the optimal parameters of the HPTO unit need to be manually estimated by repeating setting the parameters’ values during the simulation process. However, such an estimation method can easily be exposed to human error and would subsequently result in an inaccurate selection of HPTO parameters for WECs. Therefore, an effective approach of using the non-evolutionary Non-Linear Programming by Quadratic Lagrangian (NLPQL) and evolutionary Genetic Algorithm (GA) algorithms for determining the optimal HPTO parameters was explored in the present study. A simulation–optimisation of the HPTO model was performed in the MATLAB/Simulink environment. A complete WECs model was built using Simscape Fluids toolbox in MATLAB/Simulink. The actual specifications of hydraulic components from the manufacturer were used during the simulation study. The simulation results showed that the performance of optimal HPTO units optimised by NLPQL and GA approaches have significantly improved up to 96% and 97%, respectively, in regular wave conditions. The results also showed that both optimal HPTO units were capable of generating electricity up to 62% and 77%, respectively, of their rated capacity in irregular wave circumstances.
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Miniguano, Henry, Andrés Barrado, Cristina Fernández, Pablo Zumel, and Antonio Lázaro. "A General Parameter Identification Procedure Used for the Comparative Study of Supercapacitors Models." Energies 12, no. 9 (2019): 1776. http://dx.doi.org/10.3390/en12091776.
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Supercapacitors with characteristics such as high power density, long cycling life, fast charge, and discharge response are used in different applications like hybrid and electric vehicles, grid integration of renewable energies, or medical equipment. The parametric identification and the supercapacitor model selection are two complex processes, which have a critical impact on the system design process. This paper shows a comparison of the six commonly used supercapacitor models, as well as a general and straightforward identification parameter procedure based on Simulink or Simscape and the Optimization Toolbox of Matlab®. The proposed procedure allows for estimating the different parameters of every model using a different identification current profile. Once the parameters have been obtained, the performance of each supercapacitor model is evaluated through two current profiles applied to hybrid electric vehicles, the urban driving cycle (ECE-15 or UDC) and the hybrid pulse power characterization (HPPC). The experimental results show that the model accuracy depends on the identification profile, as well as the robustness of each supercapacitor model. Finally, some model and identification current profile recommendations are detailed.
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Loreto, Gerardo. "Enseñanza de la teoria de control lineal utilizando simulaciones y plataformas de sistemas aero-propulsados." Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 7, no. 14 (2020): 89–97. http://dx.doi.org/10.29057/icbi.v7i14.4976.
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El uso de simulaciones como se ha demostrado en diferentes trabajos reportados en la literatura especializada resulta un excelente complemento en la enseñanza tradicional de la teoría de control lineal a nivel ingeniería que se basa en explicaciones orales y sesiones de solución de ejercicios. Sin embargo, la mayoría asume que el conocimiento adquirido mediante simulaciones puede ser transferido a un contexto real por los estudiantes. En el presente trabajo, se desarrolla una metodología de enseñanza que cubre sesiones de simulación basadas en una plataforma desarrollada a partir de la librería de Simscape Multibody™ de Matlab/Simulink® y sesiones de aplicación que permiten validar que los estudiantes pueden transferir los conocimientos adquiridos utilizando plataformas denominadas aero-propulsadas que hacen uso de sistemas de hélice y motor como actuadores, aplicadas para cubrir el tema correspondiente a la síntesis de controladores y que cubre tópicos como el modelado, identificación y sintonización de controladores que son los principales temas que se cubren en un curso introductorio sobre la teoría de control de sistemas lineales para ingenierías como Mecatrónica y Electrónica
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Khan, Muhammad, Ali Kazim, Ghulam Uddin, et al. "Thermoelectric waste heat recovery of an automotive IC engine using (Na, K) co-doped polycrystalline tin selenide (SnSe)." Thermal Science, no. 00 (2020): 300. http://dx.doi.org/10.2298/tsci200620300k.
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Recent developments in converting the thermal energy of exhaust gasses of automobiles into electric power directly, require an extensive simulation and design of appropriate thermoelectric generation system. This work aims to create a physical model of engine exhaust system using Simscape language to simulate waste heat recovery from the exhaust gasses using (Na, K) co-doped polycrystalline tin selenide (SnSe) thermoelectric material. This particular material exhibits a high Seebeck coefficient and extremely low lattice thermal conductivity in power generation because of phonons scattering by the rattlers (Na, K atoms) and Nano-structuring. In the MATLAB/Simulink environment, a transient simulation is done for the recovery of waste heat from a 1.5 liters engine using these specific material-based thermoelectric modules. According to the results obtained, at the temperature gradient of 285 K across its sides, electrical power of 10.4 watts with a conversion efficiency of almost 5 percent is produced from one module. The total system output power was 477 watts at the exhaust gas inlet temperature of 900 K to the octagonal heat exchanger on which the modules are mounted.
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Salamone, Sara, Basilio Lenzo, Giovanni Lutzemberger, Francesco Bucchi, and Luca Sani. "On the Investigation of Energy Efficient Torque Distribution Strategies through a Comprehensive Powertrain Model." Sustainability 13, no. 8 (2021): 4549. http://dx.doi.org/10.3390/su13084549.
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In electric vehicles with multiple motors, the torque at each wheel can be controlled independently, offering significant opportunities for enhancing vehicle dynamics behaviour and system efficiency. This paper investigates energy efficient torque distribution strategies for improving the operational efficiency of electric vehicles with multiple motors. The proposed strategies are based on the minimisation of power losses, considering the powertrain efficiency characteristics, and are easily implementable in real-time. A longitudinal dynamics vehicle model is developed in Simulink/Simscape environment, including energy models for the electrical machines, the converter, and the energy storage system. The energy efficient torque distribution strategies are compared with simple distribution schemes under different standardised driving cycles. The effect of the different strategies on the powertrain elements, such as the electric machine and the energy storage system, are analysed. Simulation results show that the optimal torque distribution strategies provide a reduction in energy consumption of up to 5.5% for the case-study vehicle compared to simple distribution strategies, also benefiting the battery state of charge.
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Gonzalez, Fabio Alfonso, M. E. Afanador Cristancho, and E. F. Niño López. "Modelamiento y simulación de un quadrotor mediante la integración de Simulink y SolidWorks." MASKAY 9, no. 1 (2018): 15. http://dx.doi.org/10.24133/maskay.v9i1.1043.
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El propósito de este trabajo fue el de realizar el modelo dinámico de un vehículo aéreo no tripulado (VANT) tipo quadrotor, que simule el comportamiento real del mismo, de tal manera que el quadrotor pueda realizar sus movimientos básicos con el mínimo error posible. Para realizar dicho modelo matemático se consideró al quadrotor como un cuerpo rígido de seis grados de libertad en donde el sistema es dividido en coordenadas traslacionales y rotacionales al manejar una técnica para la modelación, mediante las ecuaciones de Euler-Lagrange, y así obtener la función de transferencia, expresada en las plantas del modelo dinámico que describe el comportamiento del quadrotor. La dinámica rotacional del VANT fue definida por los principales momentos de inercia, los cuales fueron hallados en el centro de masa del vehículo, dichos momentos fueron estimados a través del software de entorno CAD Solidworks. Para ello, el quadrotor se ensambló allí con el mínimo de partes posibles y luego el diseño se exportó a Simulink para complementar los resultados de la simulación con una animación en 3D del movimiento. Al diseño de la estructura se le implementó una estrategia de control que estabiliza las plantas ya descritas y se corroboró el funcionamiento del sistema al aplicar al mismo, perturbaciones externas como lo son las ráfagas de viento y masas variables que puedan producir inestabilidad durante el vuelo, logrando que ante este tipo de señales el sistema reaccione de forma controlada. En los resultados se observó que la simulación de una ráfaga de viento en donde el VANT cambio su posición en los ejes de desplazamiento horizontal, este mismo logró llegar nuevamente a su posición de referencia en menos de doce (12) segundos. Lo anterior constituye una importante aplicación de la dinámica rotacional del Vehículo Aéreo No Tripulado, al utilizar Simulink y la librería Simscape Multibody en conjunto con Solidworks, lográndose una herramienta de gran interés y por ende un aporte significativo para el estudio de los VANT, dando posibilidad del uso de una herramienta práctica para el diseño de quadrotores, enfocados en diferentes aplicaciones, tales como la agricultura de precisión.
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Baran, Janusz, and Andrzej Jąderko. "An MPPT Control of a PMSG-Based WECS with Disturbance Compensation and Wind Speed Estimation." Energies 13, no. 23 (2020): 6344. http://dx.doi.org/10.3390/en13236344.
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The paper presents simulation research on a variable structure control scheme of a small variable-speed fixed-pitch wind energy conversion system (WECS) with a three-phase permanent magnet synchronous generator (PMSG) in variable wind conditions. The WECS is connected to a power grid through two back-to-back voltage source converters (VSCs) with a DC link. The presented control algorithm is based on feedforward compensation of the wind turbine aerodynamic torque estimated using a linear disturbance observer (DOB). The torque estimate is employed to determine the effective wind speed, required for setting the reference angular speed, using numerical zero search of a nonlinear function. The simulation model, built in the Matlab/Simulink environment using the Simscape Electrical toolbox, includes the field-oriented control of the PMSG via the machine VSC, performed by cascaded angular velocity and current/torque PI controllers, as well as synchronization with the grid and the reactive power control via the grid VSC. The presented results are focused on the performance of the proposed control in the maximum power point tracking (MPPT) operating region of the WECS for various wind speed profiles.
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Chen, Chih Keng, Tri Vien Vu, Chih Wei Hung, and Chih Jer Lin. "Modeling and Simulation Study of a Series Hydraulic Hybrid Vehicle." Applied Mechanics and Materials 284-287 (January 2013): 834–38. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.834.
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As a branch of the Hydraulic Hybrid Vehicle (HHV) technology, Series Hydraulic Hybrid Vehicle (SHHV) has been an important research object of institutions and automotive manufacturers all over the world. With the flexibility of engine management and regenerative braking characteristics SHHV is expected to be a short-term solution to develop a higher efficiency, cleaner, and safer transportation. In this work, the function and parameter determination of key components for SHHV are discussed. Based on the analytical analysis, the suitable set of component parameters is selected. The model of SHHV is implemented via Simulink/MATLAB mostly based on SimScape toolbox. The proposed model can be used as a development tool to quickly simulate the real hybrid system when it allows applying different parameter sets and in various conditions. The performance of the system is evaluated through some specific cases and the capability of braking energy recovery of the system is also investigated. Simulation results indicate that for a 2.5 ton truck case, more than 86% of braking energy can be captured and more than 72% of that energy can be returned to the kinetic energy of vehicle motion.
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Jusoh, Mohd Afifi, Zulkifli Mohd Yusop, Aliashim Albani, Muhamad Zalani Daud, and Mohd Zamri Ibrahim. "Investigations of Hydraulic Power Take-Off Unit Parameters Effects on the Performance of the WAB-WECs in the Different Irregular Sea States." Journal of Marine Science and Engineering 9, no. 8 (2021): 897. http://dx.doi.org/10.3390/jmse9080897.
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Hydraulic power take-off (HPTO) is considered to be one of the most effective power take-off schemes for wave energy conversion systems (WECs). The HPTO unit can be constructed using standard hydraulic components that are readily available from the hydraulic industry market. However, the construction and operation of the HPTO unit are more complex rather than other types of power take-off, as many components parameters need to be considered during the optimization. Generator damping, hydraulic motor displacement, hydraulic cylinder and accumulator size are among the important parameters that influence the HPTO performance in generating usable electricity. Therefore, the influence of these parameters on the amount of generated electrical power from the HPTO unit was investigated in the present study. A simulation study was conducted using MATLAB/Simulink software, in which a complete model of WECs was developed using the Simscape fluids toolbox. During the simulation, each parameters study of the HPTO unit were separately manipulated to investigate its effects on the WECs performance in five different sea states. Finally, the simulated result of the effect of HPTO parameters on the amount of generated electrical power from the HPTO unit in different sea states is given and discussed.
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Vajpayee, Vineet, Elif Top, and Victor M. Becerra. "Analysis of Transient Interactions between a PWR Nuclear Power Plant and a Faulted Electricity Grid." Energies 14, no. 6 (2021): 1573. http://dx.doi.org/10.3390/en14061573.
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This paper presents the transient stability analysis of a pressurised water-type nuclear power plant following faults and disturbances affecting the electricity grid to which it is connected. The modelled nuclear plant consists of various integrated subsystems, such as core neutronics and thermal-hydraulics, piping and plenum, pressuriser, steam generator, turbine, governor, and dynamics shaft, in addition to the turbine-speed controller. The nonlinear nuclear power plant model is linearised at the operating point to acquire a linear model for controller design. The turbine-speed control loop effectively enacts a closed-loop implementation of the nuclear power plant connected to the electric grid. The various transient stability enhancement components such as the power system stabiliser, static var compensator, and static synchronous compensator are employed to test performance during severe contingencies. The interaction between the nuclear power plant, electric grid, and protection system is studied under various scenarios such as single-phase fault, three-phase fault, and permanent load loss. The performance of the nonlinear plant is further observed during load-following operation. The dynamic behaviour of the overall system is analysed using simulations in the MATLAB/Simulink/Simscape environment.
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Carpio, Marco, Roque Saltaren, Julio Viola, Cristian Calderon, and Juan Guerra. "Proposal of a Decoupled Structure of Fuzzy-PID Controllers Applied to the Position Control in a Planar CDPR." Electronics 10, no. 6 (2021): 745. http://dx.doi.org/10.3390/electronics10060745.
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The design of robot systems controlled by cables can be relatively difficult when it is approached from the mathematical model of the mechanism, considering that its approach involves non-linearities associated with different components, such as cables and pulleys. In this work, a simple and practical decoupled control structure proposal that requires practically no mathematical analysis was developed for the position control of a planar cable-driven parallel robot (CDPR). This structure was implemented using non-linear fuzzy PID and classic PID controllers, allowing performance comparisons to be established. For the development of this research, first the structure of the control system was proposed, based on an analysis of the cables involved in the movement of the end-effector (EE) of the robot when they act independently for each axis. Then a tuning of rules was carried out for fuzzy PID controllers, and Ziegler–Nichols tuning was applied to classic PID controllers. Finally, simulations were performed in MATLAB with the Simulink and Simscape tools. The results obtained allowed us to observe the effectiveness of the proposed structure, with noticeably better performance obtained from the fuzzy PID controllers.
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Correia, Diogo, and Adelino Ferreira. "Aircrafts On-Ground Dynamics Models and Simulation Software: State-of-the-Art." Sustainability 13, no. 16 (2021): 9147. http://dx.doi.org/10.3390/su13169147.
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The aircraft is a means of transportation that operates mainly in the air; however, it starts and ends its journey on the ground. Due to the aircraft’s structural complexity, simulation tools are used to understand and to predict its behavior in its movements on the ground. Simulation tools allow adjusting the observation parameters to gather a greater amount of data than real tests and explore interactions of the aircraft and their individual components with external objects such as pavement imperfections. This review aims to collect information on how to simulate the aircraft interaction with traffic-dependent energy harvesting systems. The specifications and framework to be met by a conceptual design are explored. The different configurations for simulating the aircraft configuration result in the selection of the two-mass-spring-damper model. For the components, especially the landing gear, a deployable element for on-ground movements, several existing models capable of translating the tire are also presented, resulting in a selection of point-contact, Fiala and Unified semi-empirical models. It is verified which software can address the proposed simulation, such as GearSim from SDI-Engineering and Matlab/Simulink/Simscape Multibody from MathWorks.
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Srdanovic, Vesna, Oscar Botero Henao, and Sergio Hernando Ruiz. "Modelado e identificación de un sistema electromecánico y diseño del control PID para gobernar inalámbricamente el desplazamiento de un objeto móvil." Revista CINTEX 22, no. 1 (2017): 25–46. http://dx.doi.org/10.33131/24222208.285.
Full textAbstract:
En este artículo estamos presentando el proceso de diseño del control de velocidad para un sistema electromecánico, específicamente para un motor de corriente continua con imán permanente. Los resultados obtenidos son relevantes para el desarrollo del sistema de control de un objeto móvil, con el objetivo de gobernar su movimiento inalámbricamente. La metodología aplicada incluye el modelado matemático, la identificación del motor de corriente continua y el diseño del control de velocidad correspondiente. Se presentó el modelo matemático, según las leyes que describen los sistemas electromecánicos y la estipulación numérica de los parámetros que caracterizan el motor. También se realizó otro método para obtener la función de transferencia del motor, conocido como identificación de un sistema físico, aplicando la técnica experimental y computacional. En el proceso de verificación de las funciones de transferencia y el diseño del sistema de control se utilizó el software de Matlab y sus respectivas herramientas como Simulink, Simscape y SISO Tool. Finalmente los controladores diseñados se usaran para desarrollar un sistema de control de desplazamiento de un objeto móvil, según una trayectoria previamente especificada. Para la comunicación inalámbrica se seleccionó la tecnología ZigBee, los pequeños radio transreceptores denominados módulos XBee, adecuados para comunicación inalámbrica a corto alcance.
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Hoodorozhkov, S. I., and A. А. Krasilnikov. "Numerical simulation of dynamic processes in transmission of vehicle." Izvestia MGTU MAMI 1, no. 1 (2021): 38–45. http://dx.doi.org/10.31992/2074-0530-2021-47-1-38-45.
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The article considers the issues of digital modeling of dynamic processes in the transmissions of vehicles. The purpose of this research was to develop an algorithm for numerical mathematical modeling of dynamic processes in the transmissions of transport vehicles using modern digital software packages. The method includes a systematic approach to the study of dynamic processes during switching, based on modeling the operation of the gearbox together with the internal com-bustion engine (taking into account its dynamic, speed and load characteristics). The order of appli-cation of the MATLab – Simulink, Simscape software for numerical simulation of dynamic pro-cesses is considered. Using the fundamental blocks of these applications, models of physical com-ponents are created: the internal combustion engine, friction clutches, gearboxes, elastic shafts, damping devices, and tractor power transmission control systems. A digital model of the tractor transmission is created, its design scheme is given, and the initial characteristics are set. It was used to simulate dynamic processes in the tractor gearbox. The main attention in this paper is paid to the application of the proposed method for calculating the dynamic processes in the gearbox during gear changes under load with forward and reverse switching, including the simultaneous use of several friction clutches.
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Chen, Po-Tuan, Ping-Hao Pai, Cheng-Jung Yang, and K. David Huang. "Development of Transmission Systems for Parallel Hybrid Electric Vehicles." Applied Sciences 9, no. 8 (2019): 1538. http://dx.doi.org/10.3390/app9081538.
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This study investigated the matching designs between a power integration mechanism (PIM) and transmission system for single-motor parallel hybrid electric vehicles. The optimal matching design may lead to optimal efficiency and performance in parallel hybrid vehicles. The Simulink/Simscape environment is used to model the powertrain system of parallel hybrid electric vehicles, which the characteristics of the PIM, location of the gearbox at the driveline, and design of the gear ratio of a gearbox influenced. The matching design principles for torque-coupled–type PIM (TC-PIM) parameters and the location of the gearbox are based on the speed range of the electric motor and the internal combustion engine. The parameters of the TC-PIM (i.e., k 1 and k 2 ) are based on the k ratio theory. Numerical simulations of an extra-urban driving cycle and acceleration tests reveal that a higher k r a t i o has greater improved power-assist ability under a pre-transmission architecture. For example, a k r a t i o of 1.6 can improve the power-assist ability by 8.5% when compared with a k r a t i o of 1. By using an appropriate gear ratio and k r a t i o , the top speed of a hybrid electric vehicle is enhanced by 9.3%.
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Ibrahim, Ezz, Tarek Elnady, Mohamed Hassan, and Ibrahim Saleh. "Modelling, transient response and hydraulic behaviour of 2DOF stabilization platform." FME Transactions 48, no. 4 (2020): 833–40. http://dx.doi.org/10.5937/fme2004833e.
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The main part of the hydraulic circuit of the hydraulic stabilization platform (HSP) is the electro-hydraulic servo valve (EHSV), which is very expensive due to its manufacturing requirements, so the proper selection for the geometrical configuration of electro hydraulic servo valve (EHSV) and maintaining the system stability are the main goal for establishing HSP. Also improving the performance of (HSP) to achieve the position tracking in two degrees of freedom (2DOF) based on modifying the different parameters of the hydraulic circuit (actuator size - hydraulic servo actuator geometric configuration - different load on the platform) to achieve the best performance. The system offers a proposal for an upper stabilized platform with moving lower base to be used with ships to achieve a stabilization condition for many purposes such as radar. MATLAB Simulink and Simscape-multibody has been used in modeling the system. Changing the different parameters in the program block library input data (orifice area and spool slot width) to achieve best configuration of the system to be stabilized is discussed. The results show that using 0.6 mm² servo valve orifice area and more raises the system pressure and has a bad effect on system stability, also using 4 mm servo valve slot width has more fluctuation in the system pressure in the transient time than using (3, 2 or 1)mm slot width until approaching stable condition but has a better effect on system stability in the running (operation) time.
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Babangida, Aminu, and Péter Tamás Szemes. "Electric Vehicle Modelling and Simulation of a Light Commercial Vehicle Using PMSM Propulsion." Hungarian Journal of Industry and Chemistry 49, no. 1 (2021): 37–46. http://dx.doi.org/10.33927/hjic-2021-06.
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Even though the Internal Combustion Engine (ICE) used in conventional vehicles is one of the major causes of global warming and air pollution, the emission of toxic gases is also harmful to living organisms. Electric propulsion has been developed in modern electric vehicles to replace the ICE.The aim of this research is to use both the Simulink and Simscape toolboxes in MATLAB to model the dynamics of a light commercial vehicle powered by electric propulsion. This research focuses on a Volkswagen Crafter with a diesel propulsion engine manufactured in 2020. A rear-wheel driven electric powertrain based on a Permanent Magnet Synchronous Motor was designed to replace its front-wheel driven diesel engine in an urban environment at low average speeds.In this research, a Nissan Leaf battery with a nominal voltage of 360 V and a capacity of 24 kWh was modelled to serve as the energy source of the electric drivetrain. The New European Driving Cycle was used in this research to evaluate the electric propulsion. Another test input such as a speed ramp was also used to test the vehicle under different road conditions. A Proportional Integral controller was applied to control the speed of both the vehicle and synchronous motor. Different driving cycles were used to test the vehicle. The vehicle demonstrated a good tracking capability in each type of test. In addition, this research determined that the fuel economy of electric vehicles is approximately 19% better than that of conventional vehicles.
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Mukhametgaleeva, T. S., and D. S. Fedosov. "A simplified model of a current transformer for studying relay protection operation in transient conditions." Proceedings of Irkutsk State Technical University 25, no. 4 (2021): 450–62. http://dx.doi.org/10.21285/1814-3520-2021-4-450-462.
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We develop a simplified model of a current transformer based on its current-voltage characteristic. This model is applicable for studying relay protection operation in transient conditions when no high accuracy or consideration of current transformer magnet core hysteresis is required. The model was developed in MATLAB Simulink using elements of the SimPowerSystems and Simscape libraries. The model uses the transformation ratio and current-voltage characteristic obtained during operational tests of a current transformer. Calculation experiments with non-linear resistance found that a currentvoltage characteristic of voltage and current values can be used to model a current transformer, rather than instantaneous values. The following conditions were simulated: for nominal currents in current transformer windings to check the transformation ratio; for opened secondary winding; with current transformer saturation by increasing secondary loading; increasing the primary current ratio and presence of aperiodic current at the start of the transition process. It was found that the developed current transformer model allows for a correct imitation of all the above conditions. To verify the model, secondary current oscillograms were obtained using real current transformers 10 kV at known primary current, which were compared with nominal oscillograms in the model. The discrepancy between the results of calculational and real experiments was no more than 10% in amplitude values, with high-quality matching obtained for current charts in the model and real current transformers. A significant advantage of the developed model is that its setting requires no information on magnet core cross-section, power line length, steel grade, and the number of current transformer winding turns.
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Zeb, Kamran, Muhammad Saqib Nazir, Iftikhar Ahmad, Waqar Uddin, and Hee-Je Kim. "Control of Transformerless Inverter-Based Two-Stage Grid-Connected Photovoltaic System Using Adaptive-PI and Adaptive Sliding Mode Controllers." Energies 14, no. 9 (2021): 2546. http://dx.doi.org/10.3390/en14092546.
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To enhance the move towards a sustainable society, the solar Photovoltaic (PV) industry and its applications are progressing at a rapid rate. However, the associated issues need to be addressed when connecting PV to the grid. Advanced and efficient controllers are required for the DC link to control the second harmonic ripple and current controllers to inject quality active and reactive power to the grid in the grid-connected PV system. In this paper, DC-link voltage, active power, and reactive power are successfully controlled in stationary reference using Adaptive-PI (A-PI) and Adaptive-Sliding Mode Controller (A-SMC) for a 3 kW single-phase two-stage transformerless grid-connected inverter. A Resonant Harmonic Compensator (RHC)-based Proportional Resonant (PR) controller is employed in the current-controlled loop. The magnitude, phase, and frequency information of the grid voltage are provided by Second-Order General Integral (SOGI)-based PLL that has harmonic immunity, fast-tracking accuracy, and a rapid-dynamic response. MATLAB®/Simulink®/Simscape R2017b were used for the test bench implementation. Two scenarios were considered: in the first case, the input PV power feedforward loop was avoided, while in second case, it was included. The feedforward loop of input PV power improved the overall system dynamics. The results show that the designed controller improves both the steady-state and dynamic performance as compared with a proper-regulated PI-controller. The proposed controllers are insensitive to active and reactive power variations, and are robust, stable, faster, and fault tolerant, as compared to controllers from prior studies.
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Tascioni, Roberto, Luca Cioccolanti, Luca Del Zotto, and Emanuele Habib. "Numerical Investigation of Pipelines Modeling in Small-Scale Concentrated Solar Combined Heat and Power Plants." Energies 13, no. 2 (2020): 429. http://dx.doi.org/10.3390/en13020429.
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In this paper four different detailed models of pipelines are proposed and compared to assess the thermal losses in small-scale concentrated solar combined heat and power plants. Indeed, previous numerical analyses carried out by some of the authors have revealed the high impact of pipelines on the performance of these plants because of their thermal inertia. Hence, in this work the proposed models are firstly compared to each other for varying temperature increase and mass flow rate. Such comparison shows that the one-dimensional (1D) longitudinal model is in good agreement with the results of the more detailed two-dimensional (2D) model at any temperature gradient for heat transfer fluid velocities higher than 0.1 m/s whilst the lumped model agrees only at velocities higher than 1 m/s. Then, the 1D longitudinal model is implemented in a quasi-steady-state Simulink model of an innovative microscale concentrated solar combined heat and power plant and its performances evaluated. Compared to the results obtained using the Simscape library model of the tube, the performances of the plant show appreciable discrepancies during the winter season. Indeed, whenever the longitudinal thermal gradient of the fluid inside the pipeline is high (as at part-load conditions in winter season), the lumped model becomes inaccurate with more than 20% of deviation of the thermal losses and 30% of the organic Rankine cycle (ORC) electric energy output with respect to the 1D longitudinal model. Therefore, the analysis proves that an hybrid model able to switch from a 1D longitudinal model to a zero-dimensional (0D) model with delay based on the fluid flow rate is recommended to obtain results accurate enough whilst limiting the computational efforts.
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Pugi, L., R. Conti, A. Rindi, and S. Rossin. "A Thermo-Hydraulic Tool for Automatic Virtual Hazop Evaluation." Metrology and Measurement Systems 21, no. 4 (2014): 631–48. http://dx.doi.org/10.2478/mms-2014-0055.
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Abstract Development of complex lubrication systems in the Oil&Gas industry has reached high levels of competitiveness in terms of requested performances and reliability. In particular, the use of HazOp (acronym of Hazard and Operability) analysis represents a decisive factor to evaluate safety and reliability of plants. The HazOp analysis is a structured and systematic examination of a planned or existing operation in order to identify and evaluate problems that may represent risks to personnel or equipment. In particular, P&ID schemes (acronym of Piping and Instrument Diagram according to regulation in force ISO 14617) are used to evaluate the design of the plant in order to increase its safety and reliability in different operating conditions. The use of a simulation tool can drastically increase speed, efficiency and reliability of the design process. In this work, a tool, called TTH lib (acronym of Transient Thermal Hydraulic Library) for the 1-D simulation of thermal hydraulic plants is presented. The proposed tool is applied to the analysis of safety relevant components of compressor and pumping units, such as lubrication circuits. Opposed to the known commercial products, TTH lib has been customized in order to ease simulation of complex interactions with digital logic components and plant controllers including their sensors and measurement systems. In particular, the proposed tool is optimized for fixed step execution and fast prototyping of Real Time code both for testing and production purposes. TTH lib can be used as a standard SimScape-Simulink library of components optimized and specifically designed in accordance with the P&ID definitions. Finally, an automatic code generation procedure has been developed, so TTH simulation models can be directly assembled from the P&ID schemes and technical documentation including detailed informations of sensor and measurement system.
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Roslan, M. F., Ali Q. Al-Shetwi, M. A. Hannan, P. J. Ker, and A. W. M. Zuhdi. "Particle swarm optimization algorithm-based PI inverter controller for a grid-connected PV system." PLOS ONE 15, no. 12 (2020): e0243581. http://dx.doi.org/10.1371/journal.pone.0243581.
Full textAbstract:
The lack of control in voltage overshoot, transient response, and steady state error are major issues that are frequently encountered in a grid-connected photovoltaic (PV) system, resulting in poor power quality performance and damages to the overall power system. This paper presents the performance of a control strategy for an inverter in a three-phase grid-connected PV system. The system consists of a PV panel, a boost converter, a DC link, an inverter, and a resistor-inductor (RL) filter and is connected to the utility grid through a voltage source inverter. The main objective of the proposed strategy is to improve the power quality performance of the three-phase grid-connected inverter system by optimising the proportional-integral (PI) controller. Such a strategy aims to reduce the DC link input voltage fluctuation, decrease the harmonics, and stabilise the output current, voltage, frequency, and power flow. The particle swarm optimisation (PSO) technique was implemented to tune the PI controller parameters by minimising the error of the voltage regulator and current controller schemes in the inverter system. The system model and control strategies were implemented using MATLAB/Simulink environment (Version 2020A) Simscape-Power system toolbox. Results show that the proposed strategy outperformed other reported research works with total harmonic distortion (THD) at a grid voltage and current of 0.29% and 2.72%, respectively, and a transient response time of 0.1853s. Compared to conventional systems, the PI controller with PSO-based optimization provides less voltage overshoot by 11.1% while reducing the time to reach equilibrium state by 32.6%. The consideration of additional input parameters and the optimization of input parameters were identified to be the two main factors that contribute to the significant improvements in power quality control. Therefore, the proposed strategy effectively enhances the power quality of the utility grid, and such an enhancement contributes to the efficient and smooth integration of the PV system.
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Abdulin, R. R., D. S. Timofeev, A. A. Kravchenko, et al. "Design and Research of a Model of a Pair Active Aircraft Control Sidesticks Operation in MATLAB." Mekhatronika, Avtomatizatsiya, Upravlenie 21, no. 3 (2020): 184–92. http://dx.doi.org/10.17587/mau.21.184-192.
Full textAbstract:
Development of an aircraft active sidestick control is an actual direction in modern flight control systems which allows to increase safety, to improve cabin ergonomics and to reduce the mass and weight of control levers. The article devoted to simulation modeling of a pair active sidesticks based on electromechanical actuators coupled by a frameless kinematic scheme, providing identical dynamic characteristics for the pitch and roll channels. MATLAB, Simulink, Simscape, with SimMechanics and SimPowerSystems libraries was used to create the mathematical model. Parameters such as moments of inertia was count based on the 3D model of the active sidestick. The complex model includes two active sidesticks units, three blocks as the input source ("Autopilot", blocks of the 1st and 2nd pilots), a block that compute a loading characteristic for the manual control mode and a block with logic for switching from automatic to manual mode. The model of each active sidestick unit consists of three main blocks: a regulator, an electric motor with a control system, and a block of mechanics. The regulator block includes a PID regulator and a PWM modulator. The electric motor unit includes a power source, a three-phase bridge inverter, a model of a brushless three-phase electric motor from the SimPowerSystems library and a power switch control unit. The mechanics block includes a planetary gearbox, hinge mechanism, handle, moments of inertia, a position sensor, a torsion rod equal to tension springs which are used in device, a nonlinear speed damper and a torque source unit, depending on the force applied by the pilot. Developed model makes it possible to get static and dynamic characteristics of the actuators, to check control algorithms to simulate operating modes in automatic and manual control, including piloting by both pilots at the same time and the interruption in automatic control mode. Including in model a " hold position block" allowed to simulate situation when in manual control mode the 1st pilot tries to hold the handle in a position that he considers correct, despite the intervention of the 2nd pilot. The simulation results showed that developed device meets specified requirements for the aircraft active sidesticks.