Academic literature on the topic 'Digital twin applications'
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Journal articles on the topic "Digital twin applications"
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Maddahi, Yaser, and Siqi Chen. "Applications of Digital Twins in the Healthcare Industry: Case Review of an IoT-Enabled Remote Technology in Dentistry." Virtual Worlds 1, no. 1 (September 2, 2022): 20–41. http://dx.doi.org/10.3390/virtualworlds1010003.
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Industries are increasing their adoption of digital twins for their unprecedented ability to control physical entities and help manage complex systems by integrating multiple technologies. Recently, the dental industry has seen several technological advancements, but it is uncertain if dental institutions are making an effort to adopt digital twins in their education. In this work, we employ a mixed-method approach to investigate the added value of digital twins for remote learning in the dental industry. We examine the extent of digital twin adoption by dental institutions for remote education, shed light on the concepts and benefits it brings, and provide an application-based roadmap for more extended adoption. We report a review of digital twins in the healthcare industry, followed by identifying use cases and comparing them with use cases in other disciplines. We compare reported benefits, the extent of research, and the level of digital twin adoption by industries. We distill the digital twin characteristics that can add value to the dental industry from the examined digital twin applications in remote learning and other disciplines. Then, inspired by digital twin applications in different fields, we propose a roadmap for digital twins in remote education for dental institutes, consisting of examples of growing complexity. We conclude this paper by identifying the distinctive characteristics of dental digital twins for remote learning.
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Henrichs, Elia, Tanja Noack, Ana María Pinzon Piedrahita, María Alejandra Salem, Johnathan Stolz, and Christian Krupitzer. "Can a Byte Improve Our Bite? An Analysis of Digital Twins in the Food Industry." Sensors 22, no. 1 (December 24, 2021): 115. http://dx.doi.org/10.3390/s22010115.
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The food industry faces many challenges, including the need to feed a growing population, food loss and waste, and inefficient production systems. To cope with those challenges, digital twins that create a digital representation of physical entities by integrating real-time and real-world data seem to be a promising approach. This paper aims to provide an overview of digital twin applications in the food industry and analyze their challenges and potentials. Therefore, a literature review is executed to examine digital twin applications in the food supply chain. The applications found are classified according to a taxonomy and key elements to implement digital twins are identified. Further, the challenges and potentials of digital twin applications in the food industry are discussed. The survey revealed that the application of digital twins mainly targets the production (agriculture) or the food processing stage. Nearly all applications are used for monitoring and many for prediction. However, only a small amount focuses on the integration in systems for autonomous control or providing recommendations to humans. The main challenges of implementing digital twins are combining multidisciplinary knowledge and providing enough data. Nevertheless, digital twins provide huge potentials, e.g., in determining food quality, traceability, or designing personalized foods.
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Usländer, Thomas, Michael Baumann, Stefan Boschert, Roland Rosen, Olaf Sauer, Ljiljana Stojanovic, and Jan Christoph Wehrstedt. "Symbiotic Evolution of Digital Twin Systems and Dataspaces." Automation 3, no. 3 (August 1, 2022): 378–99. http://dx.doi.org/10.3390/automation3030020.
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This paper proposes to combine the concept of digital twins with the concept of dataspaces to fulfill the original expectation that a digital twin is a comprehensive virtual representation of physical assets. Based upon a terminological and conceptual discussion of digital twins and dataspaces, this paper claims that a systemic approach towards digital twin Systems is required. The key conceptual approach consists of a Reference Model for Digital Twin Systems (DTS-RM) and a hypothesis regarding a symbiotic evolution. The DTS-RM distinguishes between a digital twin back-end platform comprising the access and management of comprehensive digital twin instances and digital twin-related services, and digital twin front-end services that are tailored to the demands of applications and users. The main purpose of the back-end platform is to decouple the digital twin’s generation and management from the usage of the digital twin for applications.
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Su, Shuaiming, Ray Y. Zhong, and Yishuo Jiang. "Digital twin and its applications in the construction industry: A state-of-art systematic review." Digital Twin 2 (October 12, 2022): 15. http://dx.doi.org/10.12688/digitaltwin.17664.1.
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The construction industry has a great impact on social and economic development because of its wide coverage and a large number of stakeholders involved. It is precisely owing to its large volume that technological innovation of the construction industry is relatively slow. The birth and rapid development of digital twins brings more hope to the construction industry. This paper summarizes the current development of digital twin and its applications in construction industry. First, the concepts and applications of digital twin are analyzed. Then, the research on digital twins in the construction industry in the past five years is reviewed. The main research directions and key technologies are pointed out in the end. This paper could guide related practitioners to clearly grasp the research application status of digital twin in the construction industry. It could also help to find suitable research directions.
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Madubuike, Obinna C., Chimay J. Anumba, and Rana Khallaf. "A review of digital twin applications in construction." Journal of Information Technology in Construction 27 (February 23, 2022): 145–72. http://dx.doi.org/10.36680/j.itcon.2022.008.
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The emergence of digital twin technology presents tremendous opportunities for several industry sectors. A digital twin is defined as the virtual representation of a physical asset that collects and sends real-time information. A digital twin collects data from the physical asset in real-time and uses this data to create a virtual model of the physical object. Its functionality depends on the bi-directional coordination of data between the physical and virtual models. This is likened to cyber-physical systems, which seek to provide bi-directional coordination between the physical and virtual worlds. While digital twins have found applications in the various industrial sectors such as aerospace, manufacturing, and industrial engineering, their applications in the construction industry are relatively limited. Although some level of progress has been made in the construction industry with the application of a digital twin, it still lags in other sectors. Virtual models of constructed facilities are developed and used to plan and construct the actual facility, with changes in the physical facility being automatically reflected in the virtual model based on real-time data and vice-versa. The digital twin shows promising possibilities in the design, construction, operation, and maintenance of a facility. This paper reviews the development and implementation of digital twin technology in the construction industry and compares its use with other industries while assessing the benefits of DT to the construction industry. A systematic literature review including a thematic analysis was employed to address the purpose of this study. Limitations associated with the existing and emerging applications are also identified. It concludes by highlighting the importance of DT applications in the construction sector.
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Wu, Qingcai, Yunsheng Mao, Jianxun Chen, and Chong Wang. "Application Research of Digital Twin-Driven Ship Intelligent Manufacturing System: Pipe Machining Production Line." Journal of Marine Science and Engineering 9, no. 3 (March 19, 2021): 338. http://dx.doi.org/10.3390/jmse9030338.
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Digital twin has aroused extensive attention of international academia and industry to support future interaction with the physical and virtual world. Although the research and application of digital twin spring up continuously, the concept in the manufacturing domain remains in its infancy. In this context, this paper first reviews the applications of digital twins for intelligent manufacturing. Then it presents an innovative application framework of a digital twin-driven ship intelligent manufacturing system and analyzes its operation mechanism. The application framework of a digital twin-driven ship intelligent manufacturing system mainly includes five parts: the physical layer, model layer, data layer, system layer, and application layer. Finally, key enabling techniques, as well as a case study in a pipe machining production line, are constructed and studied to validate the proposed approach. Meanwhile, system design and implementation, the twin modeling construction, application process, and implementation effect of the pipe machining production line are described in detail to provide a reference for enterprises.
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Sun, Wen, Wenqiang Ma, Yu Zhou, and Yan Zhang. "An Introduction to Digital Twin Standards." GetMobile: Mobile Computing and Communications 26, no. 3 (October 7, 2022): 16–22. http://dx.doi.org/10.1145/3568113.3568119.
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Recently, both academia and industry have shown increasing interest in unlocking the potential applications of digital twin. As an emerging technology, digital twin builds a virtual representation of physical objects and makes predictive strategies. As compared with conventional simulation and modeling technologies, digital twin can ensure the high fidelity of the virtual model through continuous updating and self-learning. The emerging standardization of digital twin facilitates the development of digital twin, and will eventually realize the interconnection of data, models and services between different enterprises or areas. This article overviews the recent progress of digital twin standards, the progress of digital twin network, and the challenges for successfully deploying digital twins.
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Kosacka-Olejnik, Monika, Mariusz Kostrzewski, Magdalena Marczewska, Bogna Mrówczyńska, and Paweł Pawlewski. "How Digital Twin Concept Supports Internal Transport Systems?—Literature Review." Energies 14, no. 16 (August 11, 2021): 4919. http://dx.doi.org/10.3390/en14164919.
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In the Industry 4.0 era, the Digital Twin has become one of the most promising enabling technologies supporting material flow. Although the literature on the Digital Twin is becoming relatively well explored, including a certain number of review papers, the context of the Digital Twins application in internal transport systems has not been investigated so far. This paper thoroughly reviews the research on the Digital Twins applied in internal transport systems concerning major research trends within this research area and identification of future research directions. It provides clarification of various definitions related to the Digital Twin concept, including misconceptions such as a digital shadow, a digital model, and a digital mirror. Additionally, the relationships between terms such as material handling, material flow, and intralogistics in the context of internal transport systems coupled with the Digital Twin are explained. This paper’s contribution to the current state of the art of the Digital Twins is three-fold: (1) recognition of the most influential and high-impact journals, papers, and researchers; (2) identification of the major research trends related to the Digital Twins applications in internal transport systems, and (3) presentation of future research agendas in investigating Digital Twins applied for internal transport systems.
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Kamyabi, Leila, Tek Tjing Lie, and Samaneh Madanian. "Applications of Digital Twins in Power Systems: A Perspective." Transactions on Energy Systems and Engineering Applications 3, no. 2 (November 4, 2022): 1–9. http://dx.doi.org/10.32397/tesea.vol3.n2.484.
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Data science-based digital twin models of renewable energy system technologies developed in a real-time data-rich environment help develop better decisions and predictions than those in the present environment. Based on this real-time analysis of countrywide data, digital twin contributes to effective and reduced cost-based power system control at the localised level. Developing digital twin models from the collection of relevant data is an innovative technology. The challenge is how to leverage all the operational data and analyse the use of data from across transmission and distribution networks to help achieve the objectives. This paper presents an overview of the existing applications of digital twins in power systems.
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Kamel Boulos, Maged N., and Peng Zhang. "Digital Twins: From Personalised Medicine to Precision Public Health." Journal of Personalized Medicine 11, no. 8 (July 29, 2021): 745. http://dx.doi.org/10.3390/jpm11080745.
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A digital twin is a virtual model of a physical entity, with dynamic, bi-directional links between the physical entity and its corresponding twin in the digital domain. Digital twins are increasingly used today in different industry sectors. Applied to medicine and public health, digital twin technology can drive a much-needed radical transformation of traditional electronic health/medical records (focusing on individuals) and their aggregates (covering populations) to make them ready for a new era of precision (and accuracy) medicine and public health. Digital twins enable learning and discovering new knowledge, new hypothesis generation and testing, and in silico experiments and comparisons. They are poised to play a key role in formulating highly personalised treatments and interventions in the future. This paper provides an overview of the technology’s history and main concepts. A number of application examples of digital twins for personalised medicine, public health, and smart healthy cities are presented, followed by a brief discussion of the key technical and other challenges involved in such applications, including ethical issues that arise when digital twins are applied to model humans.
Dissertations / Theses on the topic "Digital twin applications"
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Hattay, Jamel. "Wavelet-based lifting structures and blind source separation : applications to digital in-line holography." Rouen, 2016. http://www.theses.fr/2016ROUES016.
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Ce projet de thèse expose des méthodes de traitement, dans le domaine des ondelettes, pour résoudre certains problèmes liés à la mise en oeuvre de l’holographie numérique dans l’axe. Ce developpement utilise des outils de la théorie de l’information et des divers moyens de traitement du signal tels que la séparation aveugle de sources (SAS). Cette technique est exploitée, ici, pour améliorer l’efficacité de l’holographie numérique, tels que la suppression de l’image jumelle, l’estimation de l’indice de réfraction, le codage et la transmission temps réel des hologrammes. Tout d’abord, nous donnons une brève introduction à la configuration dans l’axe de l’holographie numérique telle qu’elle est mise en oeuvre à l’UMR 6614 CORIA: l'explication de l’étape d’enregistrement ainsi que les différentes approches de restitution des hologrammes utilisés dans cette thèse. Ensuite, nous présentons un état de l’art des méthodes permettant de résoudre les deux principaux obstacles rencontrés dans la reconstruction des hologrammes numériques: l’étape de mise au point et la suppression de l’image jumelle. Ensuite, nous expliquons méticuleusement l’outil basé sur la transformée d’ondelettes, pour assurer une décomposition multi résolution de l’image, qui permet la séparation aveugle des images mélangées par un produit de convolution. Notre proposition consiste à utiliser la 2ème génération de la transformée en ondelettes d’une manière adaptative appelée aussi Schéma de lifting en quinconce Adaptif (SLQA). Cette décomposition est couplée à un algorithme de séparation appropriée pour former les trois étapes suivantes : les images d’entrées, mélangées par convolution, sont décomposées par SLQA pour former un arbre d’ondelettes. Ensuite, on applique l’algorithme de séparation sur le noeud le plus parcimonieux, généralement à la résolution la plus élevée, et enfin les images séparées sont reconstruites à l’aide de l’inverse de SLQA. Cet outil est appliqué pour résoudre plusieurs problèmes liés à des applications d’holographie numérique dans l’axe. Dans ce contexte, deux méthodes sont proposées. La première méthode, utilisant l’entropie globale, est développée pour rechercher de manière automatique le meilleur plan de mise au point des images holographiques. La deuxième méthode sert à supprimer l’image jumelle qui accompagne l’image restituée. Cette dernière se base sur la décomposition SLQA avec un algorithme de séparation statistique qui utilise la fameuse technique Analyse en Composantes Indépendantes (ACI). Vu que le formalisme d’un produit de convolution est retenu dans l’étape de formation de l’hologramme, l’outil SLQA et ACI assurent parfaitement la tâche de déconvolution. Les résultats expérimentaux confirment bien que nos deux méthodes proposées sont capables d’estimer le meilleur plan de mise au point et d’éliminer l’effet de l’image jumelle dans l’image restituée. Puis, nous proposons d’estimer l’épaisseur d’un anneau dans une image restituée d’un hologramme contenant la diffraction d’une bulle de vapeur stable dans une gouttelette d’un liquide. La dernière partie met en oeuvre le nouveau concept de Télé-Holographie. Il s’agit de mettre en place un échange de flux interactif entre la chambre d’enregistrement des hologrammes in-situ et un laboratoire distant au sein duquel s’effectue le traitement numérique de ces hologrammes. Pour atteindre cet objectif, nous proposons de réaliser une compression sans perte des hologrammes numériques par transformée en ondelettes. Pour la phase de la transmission progressive, selon la capacité du canal de transmission, nous proposons une manière efficace pour le codage de l’arbre des zéros des coefficients emboités obtenu par la transformée d’ondelette en quinconce (SLQA). Ce codeur nous permet une réduction considérable du débit binaire lors de la transmission des hologrammes. Les premiers tests effectués sur des hologrammes réels, enregistrés au sein du laboratoire CORIA, montrent une amélioration significative des taux de compression totale et de la taille de l’hologramme compresséThe present thesis is meant to develop specific processes, in the realm of wavelets domain, for certain digital holography applications. We mainly use the so-called blind source separation (BSS) techniques to solve numerous digital holography problems, namely, the twin image suppression, real time coding and transmission of holograms. Firstly, we give a brief introduction to in-line configuration of digital holography in flow measurements: the recording step explanation and the study of two reconstruction approaches that have been used during this thesis. Then, we emphasize the two well known obstacles of digital holograms reconstruction, namely, the determination of the best focus plane and the twin image removal. Secondly, we propose a meticulous scrutiny of the tool, based on the Blind Source Separation (BSS), enhanced by a multiscale decomposition algorithm, which enables the blind separation of convolutively mixed images. The suggested algorithm uses a wavelet-based transformer, called Adaptive Quincunx Lifting Scheme (AQLS), coupled with an appropriate unmixing algorithm. The resulting deconvolution process is made up of three steps. In the first step, the convolutively mixed images are decomposed by AQLS. Then, separation algorithm is applied to the most relevant component to unmix the transformed images. The unmixed images are, thereafter, reconstructed using the inverse of the AQLS transform. In a subsequent part, we adopt the blind source separation technique in the wavelet field domain to solve several problems related to digital holography. In this context, we present two main contributions for digital in-line hologram processing. The first contribution consists in an entropy-based method to retrieve the best focus plane, a crucial issue in digital hologram reconstruction. The second contribution consists in a new approach to remove a common unwanted artifact in holography called the twin image. The latter contribution is based on the blind source separation technique, and the resulting algorithm is made up of two steps: an Adaptive Quincunx Lifting Scheme (AQLS) based on the wavelet packet transform and a statistical unmixing algorithm based on Independent Component Analysis (ICA) tool. The role of the AQLS is to maximize the sparseness of the input holograms. Since the convolutive formalism is retained in digital in-line holography, BSS-based tool is extended and coupled with wavelet-based AQLS to fulfill the deconvolution task. Experimental results confirm that convolutive blind source separation is able to discard the unwanted twin image from digital in-line holograms. The last of this part consists in measuring the thickness of a ring. This ring is obtained from an improved reconstructed image of an hologram containing a vapor bubble created by thermal coupling between a laser pulse and nanoparticles in a droplet of a liquid. The last part introduces the Tele-Holography concept. Once the image of the object is perfectly reconstructed, the next objective is to code and transmit the reconstructed image for an interactive flow of exchange between a given laboratory, where the holograms are recorded, and a distant partner research. We propose the tele-holography process that involves the wavelet transform tool for lossless compression and transmission of digital holograms. The concept of tele-holography is motivated by the fact that the digital holograms are considered as a 2D image yielding the depth information of 3D objects. Besides, we propose a quincunx embedded zero-tree wavelet coder (QEZW) for scalable transmission. Owing to the transmission channel capacity, it reduces drastically the bit rate of the holography transmission flow. A flurry of experimental results carried out on real digital holograms show that the proposed lossless compression process yields a significant improvement in compression ratio and total compressed size. These experimentations reveal the capacities of the proposed coder in terms of real bitrate for progressive transmission
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Guillot, Matthieu. "Le problème du plus court chemin stochastique et ses variantes : fondements et applications à l'optimisation de stratégie dans le sport." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALM024.
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Un parcours de golf est composé de dix-huit trous. Sur chaque trou, le problème du golfeur est de déplacer la balle d'un point de départ prédéfini jusqu'au drapeau en un minimum de coups. Sous certaines hypothèses, ce problème peut se modéliser comme un problème de plus court chemin stochastique (PCCS). Le problème du PCCS est un processus de Markov particulier dans lequel un agent évolue dynamiquement dans un ensemble fini d'états. En chaque état, l'agent choisis une action, induisant un coût, qui le mène en un autre état en suivant une distribution de probabilité connue. Il existe également un état `puits' particulier dans lequel, une fois atteint, on reste avec une probabilité un et un coût de zéro. Le but de l'agent est, depuis un état initial, d'atteindre l'état puits en un coût moyen minimal. Dans un premier chapitre, nous étudions de manière théorique le problème du PCCS. Après avoir redéfini un cadre d'étude dans lequel nous avons affaibli les hypothèses d'existence d'une solution optimale, nous avons prouvé que les algorithmes classiques de résolution convergent dans ce nouveau cadre. Nous avons également défini un nouvel algorithme de résolution basé sur l'algorithme primal-dual. Dans le deuxième chapitre, nous détaillons la modélisation du problème d'optimisation de stratégies au golf en un problème de PCCS. Grâce à la base de données Shotlink, nous définissons des `clones numériques' de joueurs que nous pouvons faire jouer artificiellement sur différents parcours de golf afin de prédire les scores des joueurs. Nous avons appliqué ce modèle à deux compétitions : le master d'Augusta en 2017 et la Ryder Cup en 2018. Dans un troisième et dernier chapitre, nous étudions l'extension naturelle à deux joueurs du problème du PCCS : les jeux de plus courts chemins stochastiques. Nous étudions particulièrement les formulations programmation linéaire de ces jeux et de deux cas particuliers de ceux-ciA golf course consists of eighteen holes. On each hole, the golfer has to move the ball from the tee to the flag in a minimum number of shots. Under some assumptions, the golfer's problem can be modeled as a stochastic shortest path problem (SSP). SSP problem is a special case of Markov Decision Processes in which an agent evolves dynamically in a finite set of states. In each state, the agent chooses an action that leads him to another state following a known probability distribution. This action induces a cost. There exists a `sink node' in which the agent, once in it, stays with probability one and a cost zero. The goal of the agent is to reach the sink node with a minimum expected cost. In the first chapter, we study the SSP problem theoretically. We define a new framework in which the assumptions needed for the existence of an optimal policy are weakened. We prove that the most famous algorithm still converge in this setting. We also define a new algorithm to solve exactly the problem based on the primal-dual algorithm. In the second chapter we detail the golfer's problem model as a SSP. Thanks to the Shotlink database, we create `numerical clones' of players and simulate theses clones on different golf course in order to predict professional golfer's scores. We apply our model on two competitions: the master of Augusta in 2017 and the Ryder Cup in 2018. In the third chapter, we study the 2-player natural extension of SSP problem: the stochastic shortest path games. We study two special cases, and in particular linear programming formulation of these games
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Norlin, Olivia, Lotta Rydin, Matilda Maxwell, Good Linnéa Gauffin, Maija Persson, and Viktor Öhrner. "Digital Twin of a diagnostic system : A proposal of a Digital Twin framework for the Transportable Culture Cabinet, with levels of application possibilities and its challenges." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-412088.
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The Digital Twin (DT) is a concept that is gaining more and more attention. A DT is a virtualversion of a physical product, which can be used in monitoring and developing said physical product.In this report we have discussed how a DT of a Transportable Culture Cabinet (TCC) could beimplemented, and its framework. The TCC is being developed at Q-linea and will be used for culturingblood samples for faster diagnosis of sepsis. A DT of a TCC could be used to monitor the statusof the sample and the physical product itself. Data from the TCC could also be used by the DTto detect and predict failures of the TCC such as malfunctioning batteries. The TCC can also bereferred to as a physical twin and will exist in the physical space, while the DT will exist in thevirtual space. An information processing layer (IPL) will connect the physical space and the virtualspace. A Digital Twin can either be a Digital Twin Prototype (DTP), a Digital Twin Environment(DTE), a Digital Twin Instance (DTI), or a Digital Twin Aggregate (DTA), which is an aggregationof all the DTIs. In this paper, we have solely focused on DTIs and DTAs. The Digital Twin ofthe Transportable culture cabinet will be a DTI, and by aggregating all the existing DTIs, or allDTIs belonging to the same hospital, a DTA will be created. Both DTIs and DTAs can be appliedwith different levels of complexity. Hence, we have proposed three levels of complexity of DTIs and DTAs. There are challenges of using a DT for a TCC. The user interface have to be user friendly forstaff that have little IT knowledge. Another challenge is the synchronisation between the TCC and DT.Since the TCC is mobile, a stable internet connection cannot be guaranteed. The TCC should thereforebe able to store the most important data.
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BLOMKVIST, YLVA, and LOENBOM LEO ULLEMAR. "Improving supply chain visibility within logistics by implementing a Digital Twin : A case study at Scania Logistics." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279054.
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As organisations adapt to the rigorous demands set by global markets, the supply chains that constitute their logistics networks become increasingly complex. This often has a detrimental effect on the supply chain visibility within the organisation, which may in turn have a negative impact on the core business of the organisation. This paper aims to determine how organisations can benefit in terms of improving their logistical supply chain visibility by implementing a Digital Twin — an all-encompassing virtual representation of the physical assets that constitute the logistics system. Furthermore, challenges related to implementation and the necessary steps to overcome these challenges were examined. The results of the study are that Digital Twins may prove beneficial to organisations in terms of improving metrics of analytics, diagnostics, predictions and descriptions of physical assets. However, these benefits come with notable challenges — managing implementation and maintenance costs, ensuring proper information modelling, adopting new technology and leading the organisation through the changes that an implementation would entail. In conclusion, a Digital Twin is a powerful tool suitable for organisations where the benefits outweigh the challenges of the initial implementation. Therefore, careful consideration must be taken to ensure that the investment is worthwhile. Further research is required to determine the most efficient way of introducing a Digital Twin to a logistical supply chain.I takt med att organisationer anpassar sig till de hårda krav som ställs av den globala marknaden ökar också komplexiteten i deras logistiknätverk. Detta har ofta en negativ effekt på synligheten inom logistikkedjan i organisationen, vilken i sin tur kan ha en negativ påverkan på organisationens kärnverksamhet. Målet med denna studie är att utröna de fördelar som organisationer kan uppnå vad gäller att förbättra synligheten inom deras logistikkedjor genom att implementera en Digital Tvilling — en allomfattande virtuell representation av de fysiska tillgångar som utgör logistikkedjan. Resultaten av studien är att Digitala Tvillingar kan vara gynnsamma för organisationer när det gäller att förbättra analys, diagnostik, prognoser och beskrivningar av fysiska tillgångar. Implementationen medför dock utmaningar — hantering av implementations- och driftskostnader, utformning av informationsmodellering, anammandet av ny teknik och ledarskap genom förändringsarbetet som en implementering skulle innebära. Sammanfattningsvis är en Digital Tvilling ett verktyg som lämpar sig för organisationer där fördelarna överväger de utmaningar som tillkommer med implementationen. Därmed bör beslutet om en eventuell implementation endast ske efter noggrant övervägande. Vidare forskning behöver genomföras för att utröna den mest effektiva metoden för att introducera en Digital Tvilling till en logistikkedja.
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De, Pellegrini Martin. "Mobile-based 3D modeling : An indepth evaluation for the application to maintenance and supervision." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298024.
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Indoor environment modeling has become a relevant topic in several applications fields including Augmented, Virtual and Mixed Reality. Furthermore, with the Digital Transformation, many industries have moved toward this technology trying to generate detailed models of an environment allowing the viewers to navigate through it or mapping surfaces to insert virtual elements in a real scene. Therefore, this Thesis project has been conducted with the purpose to review well- established deterministic methods for 3D scene reconstruction and researching the state- of- the- art, such as machine learning- based approaches, and a possible implementation on mobile devices. Initially, we focused on the well- established methods such as Structure from Motion (SfM) that use photogrammetry to estimate camera poses and depth using only RGB images. Lastly, the research has been centered on the most innovative methods that make use of machine learning to predict depth maps and camera poses from a video stream. Most of the methods reviewed are completely unsupervised and are based on a combination of two subnetwork, the disparity network (DispNet) for the depth estimation and pose network (PoseNet) for camera pose estimation. Despite the fact that the results in outdoor application show high quality depth map and and reliable odometry, there are still some limitations for the deployment of this technology in indoor environment. Overall, the results are promising.Modellering av inomhusmiljö har blivit ett relevant ämne inom flera applikationsområden, inklusive Augmented, Virtual och Mixed Reality. Dessutom, med den digitala transformationen, har många branscher gått mot denna teknik som försöker generera detaljerade modeller av en miljö som gör det möjligt för tittarna att navigera genom den eller kartlägga ytor för att infoga virtuella element i en riktig scen. Därför har detta avhandlingsprojekt genomförts med syftet att granska väletablerade deterministiska metoder för 3Dscenrekonstruktion och undersöka det senaste inom teknik, såsom maskininlärningsbaserade metoder och en möjlig implementering på mobil. Inledningsvis fokuserade vi på de väletablerade metoderna som Structure From Motion (SfM) som använder fotogrammetri för att uppskatta kameraställningar och djup med endast RGBbilder. Slutligen har forskningen varit inriktad på de mest innovativa metoderna som använder maskininlärning för att förutsäga djupkartor och kameraposer från en videoström. De flesta av de granskade metoderna är helt utan tillsyn och baseras på en kombination av två undernätverk, skillnadsnätverket (DispNet) för djupuppskattning och posenätverk (PoseNet) för kameraposestimering. Trots att resultaten i utomhusanvändning visar djupkarta av hög kvalitet och tillförlitlig vägmätning, finns det fortfarande vissa begränsningar för användningen av denna teknik i inomhusmiljön, men ändå är resultaten lovande.
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Petitdemange, Eva. "SAMUFLUX : une démarche outillée de diagnostic et d'amélioration à base de doubles numériques : application aux centres d'appels d'urgence de trois SAMU." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2020. http://www.theses.fr/2020EMAC0012.
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L’engorgement des structures d’urgence médicale est une réalité à laquelle les SAMU (Service d’Aide Médicale Urgente) n’échappent pas (5 à 15% d’augmentation des appels par an). De récents événements comme la pandémie de Covid-19 montrent les limites du système actuel pour faire face aux situations de crise. Le renfort en moyens humains ne peut être la seule solution face à ce constat et il devient incontournable de construire de nouveaux modèles organisationnels tout en visant une qualité de service permettant de répondre à 99% des appels entrants en moins de 60 secondes. Toutefois, ces modèles doivent prendre en compte la grande hétérogénéité des SAMU et de leur fonctionnement. A la lumière de ces constats, le travail de recherche présenté dans ce manuscrit a pour but d'évaluer l'efficacité organisationnelle et la résilience des SAMU dans la prise en charge des flux d'appels téléphoniques d'urgence pour faire face au quotidien et aux situations de crise. Cette évaluation nous permet de proposer et de tester de nouveaux schémas organisationnels afin de faire des préconisations adaptées aux particularités des centres d'appels d'urgence. Dans une première partie, nous proposons une méthodologie outillée pour le diagnostic et l'amélioration des centres d'appels d'urgence. Elle se décompose en deux grands volets : l'étude des données issues des centres d'appel d'urgence puis la conception et l'utilisation d'un double numérique. Pour chaque étape de cette méthodologie, nous proposons un outil associé. Dans une seconde partie, nous appliquons le premier volet de la méthodologie aux données de nos SAMU partenaires. Il s'agit d'être capable d'extraire de l'information et des connaissances des données de téléphonies ainsi que des processus métiers pour le traitement des appels d'urgence. La connaissance ainsi extraite permet de concevoir un double numérique qui soit proche du comportement réel des SAMU. Enfin dans une troisième partie, nous utilisons la matière produite précédemment pour modéliser et paramétrer un double numérique déployé sur un moteur de simulation à événements discret. Il nous permet de tester plusieurs scénarios en jouant sur différentes organisations de gestion de l'appel. Grâce à cela, nous faisons des préconisations sur les types d'organisations à adopter afin d'améliorer les performances des centres d'appelThe demand for emergency medical services has been significant and increasing over the last decade. In a constrained medico-economic context, the maintenance of operational capacities represents a strategic strake in front of the risk of congestion and insufficient accessibility for the population. Recent events such as the COVID-19 pandemic show the limits of the current system to face crisis situations. Reinforcement in human resources cannot be the only solution in front of this observation and it becomes unavoidable to build new organizational models while aiming at a quality of service allowing to answer 99% of the incoming calls in less than 60 seconds (90% in 15s and 99% in 30s MARCUS report and HAS recommendation October 2020). However, these models must take into account the great heterogeneity of EMS and their operation. In the light of these findings, the research work presented in this manuscript aims to evaluate the organizational effiectiveness and resilience of EMS in managing the flow of emergency telephone calls to deal with daily life and crisis situations. This evaluation allows us to propose and test new organizational schemes in order to make recommendations adpated to the particularities of emergency call centers. In a first part, we propose a methodology equipped for the diagnosis and improvement of emergency call centers. It can be broken down into two main parts: the study of data from emergency call centers, and then the design and use of a dual digital system. For each step of this methodology, we propose an associated tool. In a second part, we apply the first part of the methodology to our partner EMS data. The aim is to be able to extract information and knowledge from the telephony data as well as from the business processes for handling emergency calls. The knowledge thus extracted makes it possible to design a digital duplicate that is close to the real behavior of the EMS. Finally, in a third part, we use the material produced previously to model and parameterize a digital duplicate deployed on a discrete event simulation engine. It allows us to test several scenarios by playing on different call management organizations. Thanks to this, we make recommendations on the types of organizations to adopt in order to improve the performance of call centers
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WU, CING-DE, and 吳清德. "A High-Efficiency Twin-Bus Digital Dimming Technique for LED Lighting Applications." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/96014913057916687180.
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碩士國立臺灣科技大學
電子工程系
100
This thesis aims to study the driving and dimming circuits by using the digital control for high-brightness LED lamps. Conventional LED driver consists of a power factor corrector and a DC/DC converter to achieve high power factor and good current regulation. This thesis studies a single-stage flyback PFC converter to reduce the component count and raise the conversion efficiency. A twin-bus dimming circuit is also developed to reduce the switch stresses. The operation principles and design considerations of the studied LED driver are analyzed and discussed. A laboratory prototype is designed and tested to verify the feasibility. According the experimental verifications, the overall conversion efficiency can be effectively improved. And digital dimming function is also fulfilled.
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Afzal, Muhammad. "BIM 7D: research on applications for operations & maintenance." Master's thesis, 2021. http://hdl.handle.net/1822/76166.
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Dissertação de mestrado em European Master in Building Information ModellingThroughout the project life cycle in the built environment, the extensive employment of Building Information Modelling (BIM) and the very recent advancements of other digital technologies have provided various new insights and decision-making capabilities. As a result, a large amount of data must be conveyed, altered, coordinated, and exchanged across multiple stakeholders throughout the construction process. The potential of cost management, facility maintenance to the information sharing and monitoring of the built asset put in an environment has led to the concept of a greater level of detailing of the built asset model emerging in recent years. The digitization/computerization of various phases and processes of built environments is growing to have a broad influence on how architecture, engineering, and construction (AEC) sector’s projects are planned, developed, and managed, as a result of the development of huge data in projects. The intersection of digital technologies and smart systems, along with data systems, has lately been identified as one of the most innovative and cutting-edge technological breakthroughs in the built environment. Although the integration of digital technology into the AEC industry’s practices has proven benefits throughout the lifecycle of the built asset and this incorporation has the potential to transform the construction industry, however, there exist still challenges in its intelligent implementation. For instance, one of the major problems is its precise and efficient employment for required outcomes that confirms the solid need for an intuitive framework. Therefore, the present dissertation is influentially aimed at developing a systematic guide document for the efficient implementation of digital twin technology in the built environment. A step-by-step guide framework (termed as Digital Twin Execution Plan – DTxP) is prepared that follows the workflows and information exchange requirements in order to effectively employ digitalization in the available built environment projects. A thorough literature review is carried out to collect the relevant scientific information and different codes of practice were also consulted to make sure the alignment of the developed framework with the regional and international standards. Industry practitioners were also consulted in order to get feedback on the real-life industry practices and how digitalization can really be implemented while solving the existing problems. The developed framework document reflects a comprehensive set of information on when, how, and who is responsible for what task(s) when a higher amount of productivity is required in a built environment project that is employing digital twin technology. Although the guide document is targeted to employ the digitalization in reinforced concrete bridge structure for its structural performance analysis, fatigue assessment, traffic monitoring, and ground stability, among others, the developed framework could be extended by the industry professionals working in BIM to control the information throughout the built asset’s life cycle. Besides, the development document could serve as a benchmark or a template document to follow when efficient employment of the digital twin technology into the built environment practices is needed.
Ao longo do ciclo de vida de uma construção, a ampla adoção de Building Information Modeling (BIM) e o recente advento de outras tecnologias digitais forneceram várias novas perspetivas e recursos para a tomada de decisão. Como resultado, uma grande quantidade de dados deve ser transmitida, alterada, coordenada e trocada entre as várias partes interessadas ao longo do processo de construção. A digitalização/informatização de várias fases e processos de uma construção está a crescer em direção a uma ampla influência em como os projetos do setor de arquitetura, engenharia e construção e operados pelo proprietário (AECO) são planeados, desenvolvidos e geridos, como resultado do desenvolvimento de enormes dados em projetos. A interseção das tecnologias digitais e sistemas inteligentes, juntamente com os sistemas de dados, foi recentemente identificada como um dos avanços tecnológicos mais inovadores e de ponta no ambiente construído. Embora a integração da tecnologia digital nas práticas da indústria de AEC tenha benefícios comprovados ao longo do ciclo de vida do ativo construído e esta incorporação tenha o potencial de transformar a indústria da construção ainda existem desafios na sua implementação inteligente. Por exemplo, um dos principais problemas é a sua utilização de forma precisa e eficiente para os resultados exigidos, o que confirma a necessidade sólida de uma estrutura intuitiva. Portanto, a presente dissertação tem como objetivo desenvolver um documento guia sistemático para a implementação eficiente da tecnologia digital twin no ambiente construído. É elaborado um guia passo a passo (denominado Digital Twin Execution Plan - DTxP) que segue os fluxos de trabalho e os requisitos de troca de informações para empregar efetivamente a digitalização nos projetos de ambiente construído disponíveis. Para esse efeito, é realizada uma revisão exaustiva da literatura para coletar as informações científicas relevantes. Diferentes códigos de prática foram também consultados para garantir o alinhamento da estrutura desenvolvida com regulamentação local. Profissionais da indústria também foram consultados para obter feedback das práticas da indústria da vida real e como a digitalização pode realmente ser implementada enquanto se resolve os problemas existentes. O documento de estrutura desenvolvido reflete um conjunto abrangente de informações sobre quando, como e quem é responsável por quais tarefas quando uma quantidade maior de produtividade é necessária em um projeto de ambiente construído que está empregando tecnologia digital dupla. Embora o documento-guia tenha como objetivo empregar a digitalização em estruturas de pontes de betão armado para efeitos de análise de desempenho estrutural, avaliação de fadiga, monitorização de tráfego e estabilidade do solo, entre outros, a estrutura desenvolvida pode ser estendida pelos profissionais da indústria que trabalham em BIM para controlar o informações ao longo do ciclo de vida do ativo construído.
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Chen, Chun-An, and 陳俊安. "Research on Application of Digital Twin to Activity-Based Costing System - A Case Study of Company Sale’s Development." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/994gxn.
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碩士國立臺灣科技大學
高階科研EMRD
107
The case company discussed in this study is a semiconductor design company. The case company's sales development currently does not have any method, effectively control the management of sales expenses and resource allocation, lacks accurate sales cost information, and lacks of understanding the reason behind the cost happen. The use of sales expenses is mainly based on personal experience, which allocates and adjusts its sales expenses and applies to the overall customer. Therefore, it is impossible to clearly grasp the profit combination of all the cost of sales and the customer category, and it is difficult to verify the adjustment of the sales strategy and the profitability of the case company. According to the operation characteristics of the case company sales business, this study introduces the theory and execution steps of the Activity-Based Costing system, establishes a clear calculation of the attribution of operation costs, and solves the problem that the current sales resources and customer costs are not clearly defined. Through the Digital Twin technology, the virtual avatar of the customer's attributes is established, which explains the sales cost structure after the analysis by Activity-Based Costing system, and explains the reasons behind the cost of sales for the customer. The research results of this case study can be used as an important reference for companies with similar operational modalities in formulating sales resource allocation decisions and sales strategies.
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Chou, Yu-Chi, and 周毓祺. "Research on Application of Digital Twin to The Design Communication of Virtual Collaborative Team - A Case Study of Cell phone Design Issues." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/535gf7.
Full textAbstract:
碩士國立臺灣科技大學
高階科研EMRD
107
This study aims to implement Digital Twain concept to improve the communication of product design and development communication of ODM (Original Design Manufacturing). To accurately communication and control digital information from the physical world will be the key to the development of future products. This paper clarifies the communication problems caused by the differences in geography, time difference, language, and technical cognition during the product design and development stage, and the bottlenecks that may be encountered in the future as the motive. In this regard, the concept of digital twins is studied as a medium, and base on Virtual Team to improve communication during product development. This study is based on the virtual team model established by Jessica Lipnack and Jeffrey Stamps. From the research, it is found that the communication problem of the development team stems from the correctness and immediacy of the information, which affects the effectiveness of the virtual team and also impacts the degree of trust between the team members, which indirectly influence on the overall performance and cost. Through the Digital Twin concept experiment, the management model influences the manufacturing management process and the human-machine/human-person communication mode subtly, which show positively improve decision making efficiency. Further, the loading of information collection and transmission is minimized, so that the professionals can focus on the problem-solving ideas, and making it easy for managers to make the decision, which results from the higher satisfaction of information quality.
Books on the topic "Digital twin applications"
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Pal, Surjya Kanta, Debasish Mishra, Arpan Pal, Samik Dutta, Debashish Chakravarty, and Srikanta Pal. Digital Twin – Fundamental Concepts to Applications in Advanced Manufacturing. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-81815-9.
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Lv, Zhihan, and Elena Fersman, eds. Digital Twins: Basics and Applications. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-11401-4.
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Patil, Bhushan, and Manisha Vohra. Digital Twin Technology: Fundamentals and Applications. Wiley & Sons, Limited, John, 2022.
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Patil, Bhushan, and Manisha Vohra. Digital Twin Technology: Fundamentals and Applications. Wiley & Sons, Incorporated, John, 2022.
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Patil, Bhushan, and Manisha Vohra. Digital Twin Technology: Fundamentals and Applications. Wiley & Sons, Incorporated, John, 2022.
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Vohra, Manisha. Digital Twin Technology: Fundamentals and Applications. Wiley & Sons, Incorporated, John, 2022.
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Pal, Arpan, Surjya Kanta Pal, Debasish Mishra, Samik Dutta, and Debashish Chakravarty. Digital Twin - Fundamental Concepts to Applications in Advanced Manufacturing. Springer International Publishing AG, 2021.
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Pal, Arpan, Surjya Kanta Pal, Debasish Mishra, Samik Dutta, and Debashish Chakravarty. Digital Twin - Fundamental Concepts to Applications in Advanced Manufacturing. Springer International Publishing AG, 2022.
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Masrour, Tawfik, Anass Cherrafi, and Ibtissam El Hassani. Artificial Intelligence and Industrial Applications: Artificial Intelligence Techniques for Cyber-Physical, Digital Twin Systems and Engineering Applications. Springer International Publishing AG, 2020.
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Digital Twins: Basics and Applications. Springer International Publishing AG, 2022.
Find full textBook chapters on the topic "Digital twin applications"
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Ergün, Merve Melis, Ayşegül Kocabay, Yıldız Merve Yesilcimen, and Merve Turanli Parlaktuna. "Digital Twin and Its Applications." In Industry 4.0, 151–70. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2012-7_7.
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Mo, Fan, Jack C. Chaplin, David Sanderson, Hamood Ur Rehman, Fabio Marco Monetti, Antonio Maffei, and Svetan Ratchev. "A Framework for Manufacturing System Reconfiguration Based on Artificial Intelligence and Digital Twin." In Lecture Notes in Mechanical Engineering, 361–73. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-18326-3_35.
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AbstractThe application of digital twins and artificial intelligence to manufacturing has shown potential in improving system resilience, responsiveness, and productivity. Traditional digital twin approaches are generally applied to single, static systems to enhance a specific process. This paper proposes a framework that applies digital twins and artificial intelligence to manufacturing system reconfiguration, i.e., the layout, process parameters, and operation time of multiple assets, to enable system decision making based on varying demands from the customer or market. A digital twin environment has been developed to simulate the manufacturing process with multiple industrial robots performing various tasks. A data pipeline is built in the digital twin with an API (application programming interface) to enable the integration of artificial intelligence. Artificial intelligence methods are used to optimise the digital twin environment and improve system decision-making. Finally, a multi-agent program approach shows the communication and negotiation status between different agents to determine the optimal configuration for a manufacturing system to solve varying problems. Compared with previous research, this framework combines distributed intelligence, artificial intelligence for decision making, and production line optimisation that can be widely applied in modern reactive manufacturing applications.
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Petrova-Antonova, Dessislava, and Sylvia Ilieva. "Digital Twin Modeling of Smart Cities." In Human Interaction, Emerging Technologies and Future Applications III, 384–90. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-55307-4_58.
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Adamou, Adamou Amadou, and Chakib Alaoui. "Towards the Implementation of a Digital Twin for Induction Motors." In Digital Technologies and Applications, 513–23. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-01942-5_51.
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Wankhede, Vishal Ashok, Rohit Agrawal, and S. Vinodh. "Digital Twin–Based Smart Manufacturing—Concept and Applications." In Smart Manufacturing Technologies for Industry 4.0, 31–36. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003186670-4.
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Zhang, Qi, Xiaomei Zhang, Wenjun Xu, Aiming Liu, Zude Zhou, and Duc Truong Pham. "Modeling of Digital Twin Workshop Based on Perception Data." In Intelligent Robotics and Applications, 3–14. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-65298-6_1.
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Matei, Alexandru, Nicolae-Adrian Ţocu, Constantin-Bălă Zamfirescu, Arpad Gellert, and Mihai Neghină. "Engineering a Digital Twin for Manual Assembling." In Leveraging Applications of Formal Methods, Verification and Validation: Tools and Trends, 140–52. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-83723-5_10.
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Lázaro, Oscar, Jesús Alonso, Roxana-Maria Holom, Katharina Rafetseder, Stefanie Kritzinger, Fernando Ubis, Gerald Fritz, et al. "Model-Based Engineering and Semantic Interoperability for Trusted Digital Twins Big Data Connection Across the Product Lifecycle." In Technologies and Applications for Big Data Value, 399–429. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-78307-5_18.
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AbstractWith the rising complexity of modern products and a trend from single products to Systems of Systems (SoS) where the produced system consists of multiple subsystems and the integration of multiple domains is a mandatory step, new approaches for development are demanded. This chapter explores how Model-Based Systems Engineering (MBSE) can benefit from big data technologies to implement smarter engineering processes. The chapter presents the Boost 4.0 Testbed that demonstrates how digital twin continuity and digital thread can be realized from service engineering, production, product performance, to behavior monitoring. The Boost 4.0 testbed demonstrates the technical feasibility of an interconnected operation of digital twin design, ZDM subtractive manufacturing, IoT product monitoring, and spare part 3D printing services. It shows how the IDSA reference model for data sovereignty, blockchain technologies, and FIWARE open-source technology can be jointly used for breaking silos, providing a seamless and controlled exchange of data across digital twins based on open international standards (ProStep, QIF), allowing companies to dramatically improve cost, quality, timeliness, and business results.
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Xia, Bingsen, Yuanchun Tang, Zhimin He, and WenQin Lin. "Research on Digital Twin Modeling for Virtual Power Plant." In Advances in Wireless Communications and Applications, 139–46. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3486-5_17.
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Alekseev, Anton P., Vladislav V. Efremov, Vyacheslav V. Potekhin, Yanan Zhao, and Hongwang Du. "Digital Twin Analytic Predictive Applications in Cyber-Physical Systems." In Cyber-Physical Systems and Control, 368–77. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-34983-7_35.
Full textConference papers on the topic "Digital twin applications"
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Haryono, I. S., A. L. Saw, S. W. Lee, and Lewis C. K. Wong. "Digital Twin for Geotechnical Engineering Applications." In The HKIE Geotechnical Division 41st Annual Seminar. AIJR Publisher, 2022. http://dx.doi.org/10.21467/proceedings.126.7.
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Engineers have been motivated to push boundaries and find better tools for a more efficient design process and innovative solutions in construction industry. Digital engineering is the synergistic application of electronic and software technologies. The ultimate goal is to produce digital twins which are digital replicas of real and potential physical assets. With the rise of Building Information Modelling (BIM), digital twin in geotechnical engineering focuses more on the data management. However, the inherent information in digital models can be further exploited for optimizing engineering works. In this paper, this process is illustrated from the viewpoint of geotechnical works. Examples on the use of digital twin to design complex deep excavation and earthwork projects in difficult ground conditions are presented. The geotechnical design process was streamlined and the estimated time saving was up to 50% compared with a traditional design method relying on 2D cross sections.
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Cheng, Zhiqing. "Human digital twin with applications." In Proceedings of the 7th International Digital Human Modeling Symposium (DHM 2022) and Iowa Virtual Human Summit 2022 -. University of Iowa Libraries Publishing, 2022. http://dx.doi.org/10.17077/dhm.31783.
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Johansen, Sigrid S., and Amir R. Nejad. "On Digital Twin Condition Monitoring Approach for Drivetrains in Marine Applications." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95152.
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Abstract A digital twin is a virtual representation of a system containing all information available on site. This paper presents condition monitoring of drivetrains in marine power transmission systems through digital twin approach. A literature review regarding current operations concerning maintenance approaches in todays practices are covered. State-of-the-art fault detection in drivetrains is discussed, founded in condition monitoring, data-based schemes and model-based approaches, and the digital twin approach is introduced. It is debated that a model-based approach utilizing a digital twin could be recommended for fault detection of drivetrains. By employing a digital twin, fault detection would be extended to relatively highly diagnostic and predictive maintenance programme, and operation and maintenance costs could be reduced. A holistic model system approach is considered, and methodologies of digital twin design are covered. A physical-based model rather than a data based model is considered, however there are no clear answer whereas which type is beneficial. That case is mostly answered by the amount of data available. Designing the model introduces several pitfalls depending on the relevant system, and the advantages, disadvantages and appropriate applications are discussed. For a drivetrain it is found that multi-body simulation is advised for the creation of a digital twin model. A digital twin of a simple drivetrain test rig is made, and different modelling approaches were implemented to investigate levels of accuracy. Reference values were derived empirically by attaching sensors to the drivetrain during operation in the test rig. Modelling with a low fidelity model showed high accuracy, however it would lack several modules required for it to be called a digital twin. The higher fidelity model showed that finding the stiffness parameter proves challenging, due to high stiffness sensitivity as the experimental modelling demonstrates. Two industries that could have significant benefits from implementing digital twins are discussed; the offshore wind industry and shipping. Both have valuable assets, with reliability sensitive systems and high costs of downtime and maintenance. Regarding the shipping industry an industrial case study is done. Area of extra focus is operations of Ro-Ro (roll on-roll off) vessels. The vessels in the case study are managed by Wilhelmsen Ship Management and a discussion of the implementation of digital twins in this sector is comprised in this article.
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Xia, Luyao, Jianfeng Lu, and Hao Zhang. "Research on Construction Method of Digital Twin Workshop Based on Digital Twin Engine." In 2020 IEEE International Conference on Advances in Electrical Engineering and Computer Applications (AEECA). IEEE, 2020. http://dx.doi.org/10.1109/aeeca49918.2020.9213649.
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Podskarbi, Mat, and David J. Knezevic. "Digital Twin for Operations - Present Applications and Future Digital Thread." In Offshore Technology Conference. Offshore Technology Conference, 2020. http://dx.doi.org/10.4043/30553-ms.
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Rasubala, Vanessa Chriszella, and Hendra Tjahyadi. "Digital Twin Roles in Public Healthcare." In 2022 1st International Conference on Technology Innovation and Its Applications (ICTIIA). IEEE, 2022. http://dx.doi.org/10.1109/ictiia54654.2022.9935973.
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McElhinney, C., B. M. Hennelly, L. Ahrenberg, and T. J. Naughton. "Removing the twin image in digital holography by segmented filtering of in-focus twin image." In Optical Engineering + Applications, edited by Abdul A. S. Awwal, Khan M. Iftekharuddin, and Bahram Javidi. SPIE, 2008. http://dx.doi.org/10.1117/12.795894.
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Jiang, Jade, Michael Tobia, Robert Lawther, Dominic Branchaud, and Tomasz Bednarz. "Double Vision: Digital Twin applications within Extended Reality." In SIGGRAPH '20: Special Interest Group on Computer Graphics and Interactive Techniques Conference. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3388529.3407313.
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Martinez-Velazquez, Roberto, Rogelio Gamez, and Abdulmotaleb El Saddik. "Cardio Twin: A Digital Twin of the human heart running on the edge." In 2019 IEEE International Symposium on Medical Measurements and Applications (MeMeA). IEEE, 2019. http://dx.doi.org/10.1109/memea.2019.8802162.
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V, Prarthana, Lavanya P, Namana J. Jain, Nagaditya L P, Nagavishnu H, and Bhargavi K. "Digital Twin Technology: A Bird Eye View." In 2021 Third International Conference on Inventive Research in Computing Applications (ICIRCA). IEEE, 2021. http://dx.doi.org/10.1109/icirca51532.2021.9545020.
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