Pub Date : 2021-11-24DOI: 10.1109/urucon53396.2021.9647361
R. Callegari, J. Pissolato, Ricardo A. de Araujo
With the increasing power generation from the wind, safe operation is a constant concern for wind turbine engineering and manufacturers. Within this scenario are crucial studies on lightning strikes protection for generators and wind turbine blades. Thus, this work analyzed the interaction between the electric field generated by lightning strikes and different protection models of wind turbines using computer simulations. Based on the electric field intensity, the results obtained show the performance of four protection models, verifying if lightning is more likely to occur on the blade or its protective device.
{"title":"Analysis of lightning Protection models for Wind Turbine Blades","authors":"R. Callegari, J. Pissolato, Ricardo A. de Araujo","doi":"10.1109/urucon53396.2021.9647361","DOIUrl":"https://doi.org/10.1109/urucon53396.2021.9647361","url":null,"abstract":"With the increasing power generation from the wind, safe operation is a constant concern for wind turbine engineering and manufacturers. Within this scenario are crucial studies on lightning strikes protection for generators and wind turbine blades. Thus, this work analyzed the interaction between the electric field generated by lightning strikes and different protection models of wind turbines using computer simulations. Based on the electric field intensity, the results obtained show the performance of four protection models, verifying if lightning is more likely to occur on the blade or its protective device.","PeriodicalId":337257,"journal":{"name":"2021 IEEE URUCON","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115605756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-24DOI: 10.1109/urucon53396.2021.9647049
Nicolas Rondan, Jimena Fernandez-Palleiro, Romina Salveraglio, M. E. Rodriguez-Rimoldi, Nicolas Ferro, R. Sotelo
This article describes the development of an industrial prototype named Self-Checkout with Image Recognition (SCIR) developed for points of sale (POS) using lightweight convolutional neural networks to solve the problem of image verification. The development was made for a company whose POS product is installed in thousands of cashier machines in department stores, supermarkets, pharmacies and similar in Latin America. This development is intended to complement the existing self-service technology based on verification by weight of products with verification by image recognition. This optimization enhances the purchasing process through a better experience for the client. Simultaneously, the amount of fraud suffered by the retailer decreases when a client scans an article and then carries one of equal weight, but higher price. The system has the advantage of being easily integrated into an existing product. Its physical dimensions are like the self-checkouts that are in operation. The prototype recognizes 10 different products, and its precision value per class is greater than 96% in all cases while the recall value stays over 79% for each product.
{"title":"Self-Checkout System Prototype for Point-of-Sale using Image Recognition with Deep Neural Networks","authors":"Nicolas Rondan, Jimena Fernandez-Palleiro, Romina Salveraglio, M. E. Rodriguez-Rimoldi, Nicolas Ferro, R. Sotelo","doi":"10.1109/urucon53396.2021.9647049","DOIUrl":"https://doi.org/10.1109/urucon53396.2021.9647049","url":null,"abstract":"This article describes the development of an industrial prototype named Self-Checkout with Image Recognition (SCIR) developed for points of sale (POS) using lightweight convolutional neural networks to solve the problem of image verification. The development was made for a company whose POS product is installed in thousands of cashier machines in department stores, supermarkets, pharmacies and similar in Latin America. This development is intended to complement the existing self-service technology based on verification by weight of products with verification by image recognition. This optimization enhances the purchasing process through a better experience for the client. Simultaneously, the amount of fraud suffered by the retailer decreases when a client scans an article and then carries one of equal weight, but higher price. The system has the advantage of being easily integrated into an existing product. Its physical dimensions are like the self-checkouts that are in operation. The prototype recognizes 10 different products, and its precision value per class is greater than 96% in all cases while the recall value stays over 79% for each product.","PeriodicalId":337257,"journal":{"name":"2021 IEEE URUCON","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125378486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-24DOI: 10.1109/urucon53396.2021.9647113
J. Pesente, P. Galassi, L. Rodrigues, F. Santos, G. Justino
This work describes the dynamic equivalent model of the interconnected Paraguayan-Argentinean Power System. This model was developed for testing protective and controlling devices in a hardware-in-the-loop simulation to ensure system safety and enable the protection of power systems' interconnection. The equivalent was computed using the concepts of generators' coherency, radial-equivalent-independent network reduction, and frequency response equivalency for the aggregation of controllers. The equivalent model presented a significant reduction of the number of elements, having a compelling impact on the computational burden. The equivalent model had presented good results regarding the compatibility to the main complete power system model desirable features, such as stability results, as presented for small-signal stability analysis and large disturbances simulations.
{"title":"A Dynamic Equivalent Model for testing the Paraguayan-Argentinean Interconnected Power System devices using Hardware-In-the-Loop simulation","authors":"J. Pesente, P. Galassi, L. Rodrigues, F. Santos, G. Justino","doi":"10.1109/urucon53396.2021.9647113","DOIUrl":"https://doi.org/10.1109/urucon53396.2021.9647113","url":null,"abstract":"This work describes the dynamic equivalent model of the interconnected Paraguayan-Argentinean Power System. This model was developed for testing protective and controlling devices in a hardware-in-the-loop simulation to ensure system safety and enable the protection of power systems' interconnection. The equivalent was computed using the concepts of generators' coherency, radial-equivalent-independent network reduction, and frequency response equivalency for the aggregation of controllers. The equivalent model presented a significant reduction of the number of elements, having a compelling impact on the computational burden. The equivalent model had presented good results regarding the compatibility to the main complete power system model desirable features, such as stability results, as presented for small-signal stability analysis and large disturbances simulations.","PeriodicalId":337257,"journal":{"name":"2021 IEEE URUCON","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129659222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-24DOI: 10.1109/urucon53396.2021.9647223
E. Cornalino, Vanina Camacho, D. Vallejo, Gabriela Gaggero, Valentina Groposo
Massive incorporation of wind and solar energy into the Uruguayan electrical system, makes forecasting in general, and in particular that of Electricity Demand, an essential tool for programming the optimal short-term operation. In addition to allowing the scheduling of use of energy resources on a weekly basis, the precision of the hourly power forecasts is a key tool for forecasting the power balance and determining the flexible resources that will be necessary to maintain the system equilibrium in the following hours. This work briefly describes the developed model, details the last improvements made and shows some quality indicators obtained for the last version. Finally, the calibration methodology which was recently improved and is under testing period is also described.
{"title":"Probabilistic Modeling for the Uruguayan electrical load: present capacity and current improvements","authors":"E. Cornalino, Vanina Camacho, D. Vallejo, Gabriela Gaggero, Valentina Groposo","doi":"10.1109/urucon53396.2021.9647223","DOIUrl":"https://doi.org/10.1109/urucon53396.2021.9647223","url":null,"abstract":"Massive incorporation of wind and solar energy into the Uruguayan electrical system, makes forecasting in general, and in particular that of Electricity Demand, an essential tool for programming the optimal short-term operation. In addition to allowing the scheduling of use of energy resources on a weekly basis, the precision of the hourly power forecasts is a key tool for forecasting the power balance and determining the flexible resources that will be necessary to maintain the system equilibrium in the following hours. This work briefly describes the developed model, details the last improvements made and shows some quality indicators obtained for the last version. Finally, the calibration methodology which was recently improved and is under testing period is also described.","PeriodicalId":337257,"journal":{"name":"2021 IEEE URUCON","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129719024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-24DOI: 10.1109/urucon53396.2021.9647337
Javier Alvaro Rivera Suaña, Jorge Javier Mendoza Montoya, Omar Castillo Alarcon, Ernesto A. Navarro
This paper presents the analysis and design of a microwave amplifier for Software-Defined Radio (SDR) applications. The amplifier is implemented using the Heterojunction Bipolar Transistor technology (HBT-MMG3014NT1), designed to have the maximum transducer gain by applying distributed matching circuit elements. The amplifier is designed by using the open-source software QucsStudio (Quite Universal Circuit Simulator), with a resonance frequency design at 1.9 GHz. Then it is fabricated on a commercial FR4 substrate. The measurement results have been shown that the proposed amplifier design achieves 10.4 dB of gain at 1.9 GHz, and it has an acceptable broadband frequency response from 1.06 GHz up to 1.96 GHz with a 10 dB of attenuation. The amplifier has been tested with a primary amplitude modulation using the SDR HackRF one device.
{"title":"Using Open-Source Software QucsStudio to Design a Microwave Amplifier for SDR Applications","authors":"Javier Alvaro Rivera Suaña, Jorge Javier Mendoza Montoya, Omar Castillo Alarcon, Ernesto A. Navarro","doi":"10.1109/urucon53396.2021.9647337","DOIUrl":"https://doi.org/10.1109/urucon53396.2021.9647337","url":null,"abstract":"This paper presents the analysis and design of a microwave amplifier for Software-Defined Radio (SDR) applications. The amplifier is implemented using the Heterojunction Bipolar Transistor technology (HBT-MMG3014NT1), designed to have the maximum transducer gain by applying distributed matching circuit elements. The amplifier is designed by using the open-source software QucsStudio (Quite Universal Circuit Simulator), with a resonance frequency design at 1.9 GHz. Then it is fabricated on a commercial FR4 substrate. The measurement results have been shown that the proposed amplifier design achieves 10.4 dB of gain at 1.9 GHz, and it has an acceptable broadband frequency response from 1.06 GHz up to 1.96 GHz with a 10 dB of attenuation. The amplifier has been tested with a primary amplitude modulation using the SDR HackRF one device.","PeriodicalId":337257,"journal":{"name":"2021 IEEE URUCON","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121113700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-24DOI: 10.1109/urucon53396.2021.9647045
J. N. Bueno, L. Marcos, Kaio D. T. Rocha, M. Terra
We provide a solution for the longitudinal control problem of heavy-duty vehicles when there is no information about the actual gear engaged by the automatic gearbox. The vehicle is modeled as a discrete-time Markov jump linear system based on a previous experimental identification procedure. The engaging of each gear corresponds to the operation modes in a Markov chain. We augment the longitudinal model, such that the information about the actual mode becomes an uncertain term. It is then possible to define an optimization problem whose solution yields a specific mode-independent regulator framework. Simulation results show that the obtained state feedback gain stabilizes the closed-loop system in spite of unobserved operation modes and adequately tracks the reference trajectories of states.
{"title":"Longitudinal Control of an Autonomous Truck With Unobserved Gears","authors":"J. N. Bueno, L. Marcos, Kaio D. T. Rocha, M. Terra","doi":"10.1109/urucon53396.2021.9647045","DOIUrl":"https://doi.org/10.1109/urucon53396.2021.9647045","url":null,"abstract":"We provide a solution for the longitudinal control problem of heavy-duty vehicles when there is no information about the actual gear engaged by the automatic gearbox. The vehicle is modeled as a discrete-time Markov jump linear system based on a previous experimental identification procedure. The engaging of each gear corresponds to the operation modes in a Markov chain. We augment the longitudinal model, such that the information about the actual mode becomes an uncertain term. It is then possible to define an optimization problem whose solution yields a specific mode-independent regulator framework. Simulation results show that the obtained state feedback gain stabilizes the closed-loop system in spite of unobserved operation modes and adequately tracks the reference trajectories of states.","PeriodicalId":337257,"journal":{"name":"2021 IEEE URUCON","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126514526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-24DOI: 10.1109/urucon53396.2021.9647197
Victor Ticllacuri, Jose Cornejo, Niels Castrejon, Aurora B. Diaz, K. Hinostroza, Devjoy Dev, Yen-kai Chen, P. Palacios, Walter Castillo, Mariela Vargas, Jorge A. Cornejo-Aguilar, J. Montalván, A. Roman-Gonzalez
Space travel is one of humanity's most fantastic aspirations. However, space is the most dangerous environment due to extreme conditions. Reduced-gravity generates disuse muscle atrophy and impaired blood circulation in lower limbs. Therefore, this paper proposes a new biomedical soft robotic system to improve muscle development and promote blood circulation by applying energetically efficient mechanical stimulation to the soft tissues of the astronaut's lower limb and, additionally, to monitor their performance by cotton-based carbon nanotubes biosensors. The computational mechanical simulations performed show a maximum increase in energy optimisation of 89% and a maximum safety factor of 2.75. These preliminary results suggest an increase in the efficiency and safety of the soft robotic device.
{"title":"Design of Biomedical Soft Robotic Device for Lower Limbs Mechanical Muscle Rehabilitation and Electrochemical Monitoring under Reduced-Gravity Space Environment","authors":"Victor Ticllacuri, Jose Cornejo, Niels Castrejon, Aurora B. Diaz, K. Hinostroza, Devjoy Dev, Yen-kai Chen, P. Palacios, Walter Castillo, Mariela Vargas, Jorge A. Cornejo-Aguilar, J. Montalván, A. Roman-Gonzalez","doi":"10.1109/urucon53396.2021.9647197","DOIUrl":"https://doi.org/10.1109/urucon53396.2021.9647197","url":null,"abstract":"Space travel is one of humanity's most fantastic aspirations. However, space is the most dangerous environment due to extreme conditions. Reduced-gravity generates disuse muscle atrophy and impaired blood circulation in lower limbs. Therefore, this paper proposes a new biomedical soft robotic system to improve muscle development and promote blood circulation by applying energetically efficient mechanical stimulation to the soft tissues of the astronaut's lower limb and, additionally, to monitor their performance by cotton-based carbon nanotubes biosensors. The computational mechanical simulations performed show a maximum increase in energy optimisation of 89% and a maximum safety factor of 2.75. These preliminary results suggest an increase in the efficiency and safety of the soft robotic device.","PeriodicalId":337257,"journal":{"name":"2021 IEEE URUCON","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127744355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-24DOI: 10.1109/urucon53396.2021.9647394
R. Sotelo, Laura Gatti, Martin Machin, Maximiliano Stock, Ignacio Méndez, Joaquín Fernández-Ojeda, Diego Gibert, Juan-Diego Orihuela
This paper presents a solution of the problem of determining the optimal configuration of maximizing the loading of cargo vehicles –subject to appropriate constraints – using quantum algorithms that was proposed at the Airbus Quantum Computing Challenge. Two constrains are considered: Maximum Volume available, and Maximum possible Weight. The solution uses the Variational Quantum Eigensolver and extends a previous proposal to solve the knapsack problem enlarging the Hamiltonian employed. The solution developed was implemented in IBM Qiskit environment.
{"title":"Determination of the optimal distribution for loading cargo vehicles using the IBM Qiskit VQE algorithm","authors":"R. Sotelo, Laura Gatti, Martin Machin, Maximiliano Stock, Ignacio Méndez, Joaquín Fernández-Ojeda, Diego Gibert, Juan-Diego Orihuela","doi":"10.1109/urucon53396.2021.9647394","DOIUrl":"https://doi.org/10.1109/urucon53396.2021.9647394","url":null,"abstract":"This paper presents a solution of the problem of determining the optimal configuration of maximizing the loading of cargo vehicles –subject to appropriate constraints – using quantum algorithms that was proposed at the Airbus Quantum Computing Challenge. Two constrains are considered: Maximum Volume available, and Maximum possible Weight. The solution uses the Variational Quantum Eigensolver and extends a previous proposal to solve the knapsack problem enlarging the Hamiltonian employed. The solution developed was implemented in IBM Qiskit environment.","PeriodicalId":337257,"journal":{"name":"2021 IEEE URUCON","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122371959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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