The use of commercial off-the-shelf (COTS) drones has been exponential growth, whether for leisure or professional purposes. In addition to the beneficial applications, they recently raised security threats for critic...
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In practical applications of cooperative navigation algorithms based on Kalman filtering, noise is often colored noise, which does not meet the requirement of Gaussian white noise for Kalman ***, an algorithm is propo...
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Over the last several decades, fuel cells, or FCs, have garnered a lot of attention in the automobile sector due to their simplicity of use, quiet operation, exceptional performance, and modular architecture. In this ...
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Machine learning (ML) is significantly transforming and modernizing urban areas by enhancing service quality across various sectors such as transportation, security, robotics, healthcare, energy, and finance."Eve...
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Traffic congestion greatly reduces efficiency and mobility in urban settings. Due to their reliance on set signal periods, traditional traffic signalization systems are unable to adequately handle the dynamic nature o...
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ISBN:
(纸本)9798350348798;9798350348804
Traffic congestion greatly reduces efficiency and mobility in urban settings. Due to their reliance on set signal periods, traditional traffic signalization systems are unable to adequately handle the dynamic nature of road traffic. This study presents a novel adaptive traffic signaling system that makes use of the Quality of Service (QoS) methodology, which is commonly used in computer network traffic management. Using a "traffic of interest" number to priorities roads, this technology dynamically modifies the duration of green lights to reflect current traffic circumstances. In order to ensure timely and effective traffic management, important factors such queue length, vehicle count, travel speed, and the presence of Emergency Vehicles (EmVs) are integrated into the system. EmV prioritization is a unique feature of the system that improves its functionality. According to preliminary findings (or simulations), there is a great deal of promise for easing traffic congestion and enhancing flow. The results of this study could completely change urban traffic management by providing a scalable and effective answer to a common urban problem.
Polymer exchange membrane (PEM) fuel cell technology is promoted as a zero-emission alternative for transportation. Nevertheless, the challenge of extending the lifespan of fuel cell components persists as a significa...
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ISBN:
(纸本)9798350317671;9798350317664
Polymer exchange membrane (PEM) fuel cell technology is promoted as a zero-emission alternative for transportation. Nevertheless, the challenge of extending the lifespan of fuel cell components persists as a significant obstacle, particularly in the context of transportation applications. This challenge can be better addressed by optimal control of operating conditions. Advancing optimal control strategies to prolong fuel cell lifespan requires a precise degradation model capable of accurately forecasting performance declines in real-world operating conditions. In this study, we introduce an innovative modeling framework comprising a multiphysics model and a fuel cell degradation model. The latter covers the degradation of the catalyst layer and the membrane, which are two critical components of PEM fuel cells. In the model, the catalyst degradation considers various factors that influence the electrochemical surface area, while the membrane degradation characterizes the evolution of the remaining membrane thickness. Meanwhile, the multiphysics model discerns the internal states of the fuel cells, which are crucial for evaluating degradation trends, and continuously updates the fuel cells' performance based on feedback from the degradation model. The coupling between these two models allows for the prediction of multiple degradation processes, including the losses attributed to each component under diverse operating conditions. The model was validated using experimental data from accelerated stress tests.
Due to the current labor shortage in fruit picking, the utilization of robots for harvesting has become crucial in addressing this issue. This paper presents two key models, an apple image recognition model and an app...
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Serial peripheral interface, a term originally coined by Motorola in the 1980s, serves as a protocol facilitating the communication of serial synchronous data between a master device, often a microcontroller, and vari...
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This paper investigates the secure consensus control problem for nonlinear multi-agent systems (MASs) under de-ception attacks. The main characteristic of the proposed secure consensus control method is its ability to...
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Modular multilevel converters (MMCs) are predominant in novel high and medium power applications, such as renewable energy generation and high-voltage direct-current transmission. This hardware offers better performan...
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ISBN:
(数字)9781665473385
ISBN:
(纸本)9781665473385
Modular multilevel converters (MMCs) are predominant in novel high and medium power applications, such as renewable energy generation and high-voltage direct-current transmission. This hardware offers better performance than other voltage-source-converters due to its higher efficiency, modular design and lower harmonic content. To achieve the expected results, it is essential to coordinate the actions of all the MMC modules using balancing control methods. Different from the previous solutions, this paper proposes a consensus control approach using a leader-follower topology to solve the balancing control problem for MMCs. The proposed control method guarantees asymptotic convergence of all modules to a consensus state, allows a distributed implementation and increases the robustness against module failures. Simulation results using Matlab show the advantages of the developed method.
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