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Thermoeconomic modeling and artificial neural network-based optimization of a decarbonized combined heat and power plant with hydrogen re-electrification

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International Journal of Hydrogen Energy 2025年 143卷 1318-1329页

作者： Heidarnejad, Parisa Fathi, Parsa Karami, Maryam Department of Mechatronics Engineering Faculty of Mechanical Engineering Yildiz Technical University Istanbul Turkey Department of Mechanical Engineering Faculty of Engineering Kharazmi University Tehran Iran

This study explores the performance of a decarbonized heat and power plant integrated with a hydrogen production and storage system through thermoeconomic modeling. By employing artificial neural network algorithms along with Genetic Algorithm (GA) and Simulated Annealing (SA) methods, the proposed system is optimized for multiple objectives, including exergy efficiency and costs associated with electricity and heating. The findings reveal that at peak power output from the solar panels, the electrolyzer achieves maximum waste heat recovery, approximately 4.33 kW. Simultaneously, the gas engine decreases its power output to 32.62 kW to minimize energy losses. The heat pump steps in to address any thermal power deficiencies when the gas engine cannot fulfill the thermal load demands. During peak demand periods, the heat pump supplies 50.7% of the total heating needs, while 5.8% comes from waste heat recovery from the electrolyzer, and the remaining 43.5% is fulfilled by the gas engine. The GA algorithm identified the optimal system configuration for exergy efficiency, achieving a value of 44.13% and most cost-effective system configuration with an annual product cost of $136,933 from the viewpoint of multi-objective optimization. © 2025 Hydrogen Energy Publications LLC

关键词： Genetic algorithms

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Vibration analysis and control of aircraft landing systems using proposed neural controllers

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Neural Computing and Applications 2024年第21期36卷 13255-13268页

作者： Yıldırım, Şahin Durmuşoğlu, Aslı Department of Mechatronics Engineering Engineering Faculty Erciyes University Kayseri38000 Turkey Department of Mechanical Engineering Engineering Faculty Hakkari University Hakkari30000 Turkey

Nowadays, landing gears used in aircraft are the basic systems that carry the weight of aircraft systems and provide them to move on the ground. During the landing of aircraft, big and sudden vibrations occur as soon as the wheels come into contact with the runway. This situation negatively affects human safety, comfort and also the life of the landing gear system. Therefore, it is important to keep this vibration at permissible levels. This paper presents an improved vibration control method that controls the amplitudes of vibrations of landing systems. This paper presents proposed vibration control method that controls the angular position variables of the landing gear mechanism to control the vibrations occurring during landing. For different runway conditions and 200 km/h landing speed, the angular joint variables of the landing gear mechanism links are controlled using standard controller and a proposed neural controller structure. The simulation results are shown that the proposed neural controllers have better performance at vibration control of landing systems during landing. © The Author(s) 2024.

关键词： Controllers

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A comprehensive experimental analysis of vibration-assisted electrical discharge machining of Bohler K110 steel

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International Journal of Machining and Machinability of Materials 2024年第3期26卷 281-292页

作者： Assem, Mahmoud Samuel, Magdy El-Bahloul, Sara A. Mechatronics Department Faculty of Engineering Horus University Egypt Production and Mechanical Design Engineering Department Faculty of Engineering Mansoura University Egypt Faculty of Engineering New Mansoura University Egypt

Vibrations assisted electrical discharge machining (V-EDM) has emerged as a potent machining methodology capable of surmounting the inherent strength or hardness limitations encountered in the processing of diverse materials. Despite the well-recognised versatility of EDM, its pervasive utilisation has been impeded by constraints pertaining to lower material removal rate (MRR) and protracted machining time (MT). This study addresses this prevailing industrial challenge by endeavouring to augment the efficiency of EDM through the strategic incorporation of vibrations into the machining of Bohler K110 Steel. The investigation conducted herein systematically explores the ramifications of applying vibrations to both the dielectric fluid (DF) and the WP. The empirical findings unequivocally establish that the integration of vibrations engenders a substantial enhancement in MRR. Moreover, an elevated vibration frequency (VF) emerges as a particularly efficacious parameter, manifesting a noteworthy escalation in MRR and, consequently, a commensurate reduction in MT. Concurrently, this innovative approach exerts a discernible influence on surface roughness (SR), thereby underscoring a comprehensive amelioration in the overall quality of machining outcomes. This experimental validation substantiates the viability and practicality of V-EDM, thereby offering a promising avenue for addressing the efficiency constraints historically associated with conventional EDM methodologies. Copyright © 2024 Inderscience Enterprises Ltd.

关键词： Dielectric liquids

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Vibration-assisted electrical discharge machining of Bohler K110 steel: an industrial application and optimisation

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International Journal of Machining and Machinability of Materials 2024年第3-4期25卷 432-442页

Vibration-assisted electrical discharge machining is an influential machining technique that offers the ability to effectively machine various materials, regardless of their strength or hardness. However, the inherent limitations of electrical discharge machining (EDM), such as the lower material removal rate (MRR) and increased machining time (MT), restrict its widespread applications. To address these challenges and enhance the efficiency of the EDM process, this research proposes the integration of vibration with EDM for machining Bohler K110 steel, a material frequently encountered in industrial settings. The study investigates the influence of vibration by applying it solely to the dielectric fluid (DF) and solely to the workpiece (WP), as well as simultaneously to both WP and DF. The findings demonstrate that the introduction of vibration into the EDM process significantly improves the MRR. Moreover, increasing the vibration frequency results in a higher MRR, consequently reducing the overall MT. The proposed technique showcases its efficacy through the simultaneous application of vibration to both the WP and DF, employing a vibration frequency of 80 Hz. Copyright © 2023 Inderscience Enterprises Ltd.

关键词： Industrial research

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Motion planning system for unmanned aerial vehicles in dynamic three-dimensional space: a machine learning approach

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Neural Computing and Applications 2025年第5期37卷 3733-3757页

作者： Garibeh, Mohammad H. Al-Dahidi, Sameer Hayajneh, Mohammad Jaradat, Mohammad A. Alshorman, Ahmad Department of Mechatronics Engineering German Jordanian University Amman Jordan Mechanical and Maintenance Engineering Department German Jordanian University Amman Jordan Department of Mechatronics Engineering Faculty of Engineering The Hashemite University Zarqa Jordan Mechanical Engineering Department American University of Sharjah Sharjah United Arab Emirates Mechanical Engineering Department Jordan University of Science and Technology Irbid Jordan

Unmanned aerial vehicles (UAVs) have been highly enhanced in the last decade, targeting the deployment of UAV technology in different new applications in many fields. However, the motion control of the UAV during autonomous flight is still under development, especially in unstructured or dynamic environments. This paper presents an intelligent motion control framework using artificial potential field neural networks (APF-NNs) for UAVs in dynamic 3D environments. This approach is developed using potential field models for repulsive and attractive forces. Using the control commands of the APF-NN intelligent system, the UAV changes its planner position and altitude simultaneously to perform the path planning task. In other methods, the UAV only changes its planner positions for path planning task. The presented work is validated using simulations and field experiments. The proposed approach is outperforming existing fuzzy logic and classical potential field-based methods with a 75% and 86% reduction in computational time, 22% and 35% increase in inside success rate, 1.5% and 14.7% increase in the speed and 6.2% and 11% reduction in total traveled distance, respectively. © The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature 2024.

关键词： Unmanned aerial vehicles (UAV)

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Simulation and experimental investigation of hydro-pneumatic energy harvesting suspension system

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International Journal of Vehicle Noise and Vibration 2023年第1-2期19卷 32-54页

作者： Awad, Magdy Naeem El-Arabi, M.E. Rabbo, Saber A. Sokar, Mohamed I.B. Department of Mechanical Engineering Mechatronics Engineering Arab Academy for Science Technology and Maritime Transport Smart Village Campus Giza Egypt Mechatronics Engineering Department Canadian International College 5th Settlement Cairo Egypt Department of Design and Production Engineering Faculty of Engineering Cairo University Cairo Egypt Department of Mechanical Engineering Faculty of Engineering at Shoubra Benha University Egypt Department of Mechanical Engineering Mechatronics Engineering Faculty of Engineering at Shoubra Benha University Egypt

This article describes a promising hydro-pneumatic regenerative suspension system (HPEHS) that converts the linear oscillation of the suspension system into rotational motion via a hydraulic rectifier to maintain a unidirectional rotational motion of a hydraulic motor connected to an electric generator to generate electricity. The simulation model using the block diagram-oriented environment of MATLAB-Simulink has been created based on the governing equations to investigate the behaviour of the system and validate it. The effect of the sprung mass and the accumulator on the system performance and harvested power of the HPEHS system was investigated. It is found that the motor speed and harvested power increase with increasing sprung mass while the displacement of the sprung mass reduces. The existence of the accumulator in the system minimises the fluctuation in system pressure causing more stability to the suspension system. The average power of the regenerative suspension system is approximately 7.5 W. © 2023 Inderscience Enterprises Ltd.

关键词： Energy harvesting

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MODELLING AND ANALYSIS OF SELECTED ISSUES OF THE DYNAMICS OF A LAND ROBOT PLATFORM

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Archives of Transport 2024年第4期72卷 23-41页

作者： Dziopa, Zbigniew Zuska, Andrzej Więckowski, Dariusz Faculty of Mechatronics and Mechanical Engineering Kielce University of Technology Kielce Poland Institute of Vehicles and Construction Machinery Engineering Faculty of Automotive and Construction Machinery Engineering Warsaw University of Technology Warsaw Poland

The research object is a land robot designed to perform special tasks. One of the robot's elements is a six-wheeled platform with independent suspension. The platform allows the robot to move on land and overcome obstacles. Any equipment enabling the robot to perform planned tasks can be mounted on it. If the implementation of the mission requires the platform to move in uneven terrain, external forces are generated resulting from the platform's wheels overcoming uneven road surfaces. Disturbances occurring in the system may negatively affect the measuring and actuating devices mounted on the platform. Actuator devices may also cause additional excitations. This may lead to disruptions in the process of the land robot carrying out its intended work. The aim of the work is to analyse selected dynamics issues with particular emphasis on the modal analysis of the land robot platform and, on this basis, to check the correctness of its design. In order to carry out the tasks set, a physical and mathematical model of the platform was developed. The energy method was used to derive the analytical relationships, which requires the determination of the kinetic energy, the potential energy, the dissipative Rayleigh function and external non-potential forces. A modal analysis was carried out to determine the dynamic parameters of the system and its susceptibility to the generated excitations was determined. The considerations carried out allow for the design of a structure that improves comfort for the actuating devices. Thanks to the developed model, it is possible to select the values and distribution of system parameters in such a way as to exclude the phenomenon of beating and resonance. In the general case, the robot's basic motion is coupled to the disturbances generated in the system. That's why the considerations carried out in this paper are so important, which enable the development of robot platform dynamics that minimize the impacts on the robot's realized fundamen

关键词： Kinetic energy

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Decentralized Mobile Target Tracking Using Consensus-Based Estimation with Nearly-Constant-Velocity Modeling 12

Decentralized Mobile Target Tracking Using Consensus-Based E...

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12th RSI International Conference on Robotics and mechatronics, ICRoM 2024

作者： Ghods, Amir Ahmad Doostmohammadian, Mohammadreza Semnan University Faculty of Mechanical Engineering Iran Semnan University Faculty of Mechanical Engineering Mechatronics Department Iran

ISBN: (纸本)9798331529734

Mobile target tracking is crucial in various applications such as surveillance and autonomous navigation. This study presents a decentralized tracking framework utilizing a Consensus-Based Estimation Filter (CBEF) integrated with the Nearly-Constant-Velocity (NCV) model to predict a moving target's state. The framework facilitates agents in a network to collaboratively estimate the target's position by sharing local observations and achieving consensus despite communication constraints and measurement noise. A saturation-based filtering technique is employed to enhance robustness by mitigating the impact of noisy sensor data. Simulation results demonstrate that the proposed method effectively reduces the Mean Squared Estimation Error (MSEE) over time, indicating improved estimation accuracy and reliability. The findings underscore the effectiveness of the CBEF in decentralized environments, highlighting its scalability and resilience in the presence of uncertainties. © 2024 IEEE.

关键词： Consensus-Based Es-timation Filter Decentralized Algorithms Mobile target tracking Nearly-Constant- Velocity model

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COMPARISON BETWEEN DEFROSTING METHODS USING DIFFERENT REFRIGERANTS

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UPB Scientific Bulletin, Series D: mechanical engineering 2024年第2期86卷 79-94页

作者： Douri, Jamal Al Chiriac, Adrian Prisecaru, Tudor Pop, Horatiu Apostol, Valentin Ionita, Claudia Faculty of Mechanical Engineering and Mechatronics-National University of Science and Technology POLITEHNICA Bucharest Romania University of Technology Iraq

In this study, the performance analysis of a refrigeration system operating with different refrigerants was conducted for three defrosting methods (air, electric heating, and hot gas) within an existing refrigeration system in the laboratory of engineering Thermodynamics, Department of Thermotechnics, Engines, Thermal and Refrigerating Equipment, faculty of mechanical and Mechatronic engineering, National University of Science and Technology POLITEHNICA Bucharest, Romania. Thermodynamic analyses were conducted on refrigerants: R290, R134a, R600a, R600, R404A, R32, R1234yf, and R1234ze(E) over a 24-hour period for refrigeration, but also for freezing. The results indicated that the air defrost method demonstrated higher defrosting efficiency for most refrigerants, except for R600 and R600a. In the case of the electric heating method, COP remained low regardless of the refrigerant used. This study observed, for instance, for refrigeration, that the refrigerant R290 has a COP value of 4.873 for air defrosting, 4.463 for resistance defrosting, and 4.815 for hot gas defrosting method. The same hierarchy of COP is observed for all analyzed refrigerants for freezing case, as example being R290 which has a COP value of 2.614 for electric heating defrosting and 2.879 for hot gas defrosting method. © 2024, Politechnica University of Bucharest. All rights reserved.

关键词： Thermal engineering

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Application of Virtual Production to Optimize Industrial Production Units

Application of Virtual Production to Optimize Industrial Pro...

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2024 Advances in Science and engineering Technology International Conferences, ASET 2024

作者： Palankai, Emese Kis, Karoly Arpad Sarvajcz, Kornel University of Debrecen Faculty of Engineering Department of Mechanical Engineering Debrecen Hungary University of Debrecen Mechatronics Faculty of Engineering Department of Electrical Engineering and Mechatronics Debrecen Hungary

ISBN: (纸本)9798350344134

Our research focuses on the optimisation of a production line of a company producing and packaging cleaning products. The academic paper presents the up-scaling of the selected production system and the digital twin to realise it. It comprehensively portrays the malfunctions of the actual production process and discusses in detail the steps and results of constructing a virtual model using the Tecnomatix Plant Simulation modelling environment. Based on the simulation, several recommendations for improvement have been developed for the company in order to achieve a faster and more efficient production proceeding. The suggestions for upgrading the production line were incorporated into the simulation, and the new results were evaluated and compared with the original analyses. In the final chapter, the publication explains the OEE calculation made to support the recommended changes and describes further improvement options. © 2024 IEEE.

关键词： Virtual environments

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