Pub Date : 2024-02-12DOI: 10.3390/inventions9010022
Andreea Mandru, Liliana Rusu, A. Bekhit, F. Pacuraru
In the present study, the added resistance, heave, and pitch of the KRISO Container Ship (KCS) in waves, at both model scale and full scale, are predicted numerically in regular head waves, for four wavelengths and three wave heights. The ISIS-CFD viscous flow solver, implemented in the Fidelity Fine Marine software provided by CADENCE, was employed for the numerical simulations. The spatial discretization was based on the finite volume method using an unstructured grid. The unsteady Reynolds-averaged Navier–Stokes (RANS) equations were solved numerically, with the turbulence modeled by shear stress transport (k-ω) (SST). The free-surface capturing was based on the volume-of-fluid method. The computed solutions were validated through comparisons with towing test data available in the public domain. To predict the uncertainties in the numerical solution, a systematic grid convergence study based on the Richardson extrapolation method was performed for a single wave case on three different grid resolutions. Specific attention was given to the free-surface and wake flow in the propeller plane. The purpose was to compare the numerical results from the model- and full-scale tests to examine the scale’s effect on the ship’s performance in regular head waves. The comparison between the model scale and full scale showed obvious differences, less accentuated for the free-surface topology and clearly observed in terms of boundary layer formation in the propeller’s vicinity.
{"title":"Numerical Study of a Model and Full-Scale Container Ship Sailing in Regular Head Waves","authors":"Andreea Mandru, Liliana Rusu, A. Bekhit, F. Pacuraru","doi":"10.3390/inventions9010022","DOIUrl":"https://doi.org/10.3390/inventions9010022","url":null,"abstract":"In the present study, the added resistance, heave, and pitch of the KRISO Container Ship (KCS) in waves, at both model scale and full scale, are predicted numerically in regular head waves, for four wavelengths and three wave heights. The ISIS-CFD viscous flow solver, implemented in the Fidelity Fine Marine software provided by CADENCE, was employed for the numerical simulations. The spatial discretization was based on the finite volume method using an unstructured grid. The unsteady Reynolds-averaged Navier–Stokes (RANS) equations were solved numerically, with the turbulence modeled by shear stress transport (k-ω) (SST). The free-surface capturing was based on the volume-of-fluid method. The computed solutions were validated through comparisons with towing test data available in the public domain. To predict the uncertainties in the numerical solution, a systematic grid convergence study based on the Richardson extrapolation method was performed for a single wave case on three different grid resolutions. Specific attention was given to the free-surface and wake flow in the propeller plane. The purpose was to compare the numerical results from the model- and full-scale tests to examine the scale’s effect on the ship’s performance in regular head waves. The comparison between the model scale and full scale showed obvious differences, less accentuated for the free-surface topology and clearly observed in terms of boundary layer formation in the propeller’s vicinity.","PeriodicalId":509629,"journal":{"name":"Inventions","volume":"15 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139782207","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 : 2024-02-09DOI: 10.3390/inventions9010021
Heli Helskyaho, Laura Ruotsalainen, Tomi Männistö
Designing a database is a crucial step in providing businesses with high-quality data for decision making. The quality of a data model is the key to the quality of its data. Evaluating the quality of a data model is a complex and time-consuming task. Having suitable metrics for evaluating the quality of a data model is an essential requirement for automating the design process of a data model. While there are metrics available for evaluating data warehouse data models to some degree, there is a distinct lack of metrics specifically designed to assess how well a data model conforms to the rules and best practices of Data Vault 2.0. The quality of a Data Vault 2.0 data model is considered suboptimal if it fails to adhere to these principles. In this paper, we introduce new metrics that can be used for evaluating the quality of a Data Vault 2.0 data model, either manually or automatically. This methodology involves defining a set of metrics based on the best practices of Data Vault 2.0, evaluating five representative data models using both metrics and manual assessments made by a human expert. Finally, a comparative analysis of both evaluations was conducted to validate the consistency of the metrics with the judgments made by a human expert.
设计数据库是为企业决策提供高质量数据的关键一步。数据模型的质量是数据质量的关键。评估数据模型的质量是一项复杂而耗时的任务。要实现数据模型设计过程的自动化，就必须有合适的指标来评估数据模型的质量。虽然在某种程度上有用于评估数据仓库数据模型的指标，但明显缺乏专门用于评估数据模型符合 Data Vault 2.0 规则和最佳实践的程度的指标。如果 Data Vault 2.0 数据模型未能遵守这些原则，那么它的质量就会被认为是次优的。本文介绍了可用于手动或自动评估 Data Vault 2.0 数据模型质量的新指标。这种方法包括根据 Data Vault 2.0 的最佳实践定义一套衡量标准，使用衡量标准和人工专家的手动评估对五个具有代表性的数据模型进行评估。最后，对这两种评估进行比较分析，以验证度量标准与人类专家判断的一致性。
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Pub Date : 2024-02-09DOI: 10.3390/inventions9010021
Heli Helskyaho, Laura Ruotsalainen, Tomi Männistö
Designing a database is a crucial step in providing businesses with high-quality data for decision making. The quality of a data model is the key to the quality of its data. Evaluating the quality of a data model is a complex and time-consuming task. Having suitable metrics for evaluating the quality of a data model is an essential requirement for automating the design process of a data model. While there are metrics available for evaluating data warehouse data models to some degree, there is a distinct lack of metrics specifically designed to assess how well a data model conforms to the rules and best practices of Data Vault 2.0. The quality of a Data Vault 2.0 data model is considered suboptimal if it fails to adhere to these principles. In this paper, we introduce new metrics that can be used for evaluating the quality of a Data Vault 2.0 data model, either manually or automatically. This methodology involves defining a set of metrics based on the best practices of Data Vault 2.0, evaluating five representative data models using both metrics and manual assessments made by a human expert. Finally, a comparative analysis of both evaluations was conducted to validate the consistency of the metrics with the judgments made by a human expert.
设计数据库是为企业决策提供高质量数据的关键一步。数据模型的质量是数据质量的关键。评估数据模型的质量是一项复杂而耗时的任务。要实现数据模型设计过程的自动化，就必须有合适的指标来评估数据模型的质量。虽然在某种程度上有用于评估数据仓库数据模型的指标，但明显缺乏专门用于评估数据模型符合 Data Vault 2.0 规则和最佳实践的程度的指标。如果 Data Vault 2.0 数据模型未能遵守这些原则，那么它的质量就会被认为是次优的。本文介绍了可用于手动或自动评估 Data Vault 2.0 数据模型质量的新指标。这种方法包括根据 Data Vault 2.0 的最佳实践定义一套衡量标准，使用衡量标准和人工专家的手动评估对五个具有代表性的数据模型进行评估。最后，对这两种评估进行比较分析，以验证度量标准与人类专家判断的一致性。
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Pub Date : 2024-02-05DOI: 10.3390/inventions9010020
Laurențiu-Florin Constantinoiu, António Tavares, Rui Miguel Cândido, Eugen Rusu
Shallow water bathymetry is a topic of significant interest in various fields, including civil construction, port monitoring, and military operations. This study presents several methods for assessing shallow water bathymetry using maritime uncrewed systems (MUSs) integrated with advanced and innovative sensors such as Light Detection and Ranging (LiDAR) and multibeam echosounder (MBES). Furthermore, this study comprehensively describes satellite-derived bathymetry (SDB) techniques within the same geographical area. Each technique is thoroughly outlined with respect to its implementation and resultant data, followed by an analytical comparison encompassing their accuracy, precision, rapidness, and operational efficiency. The accuracy and precision of the methods were evaluated using a bathymetric reference survey conducted with traditional means, prior to the MUS survey and with cross-comparisons between all the approaches. In each assessment of the survey methodologies, a comprehensive evaluation is conducted, explaining both the advantages and limitations for each approach, thereby enabling an inclusive understanding for the reader regarding the efficacy and applicability of these methods. The experiments were conducted as part of the Robotic Experimentation and Prototyping using Maritime Unmanned Systems 23 (REPMUS23) multinational exercise, which was part of the Rapid Environmental Assessment (REA) experimentations.
{"title":"Innovative Maritime Uncrewed Systems and Satellite Solutions for Shallow Water Bathymetric Assessment","authors":"Laurențiu-Florin Constantinoiu, António Tavares, Rui Miguel Cândido, Eugen Rusu","doi":"10.3390/inventions9010020","DOIUrl":"https://doi.org/10.3390/inventions9010020","url":null,"abstract":"Shallow water bathymetry is a topic of significant interest in various fields, including civil construction, port monitoring, and military operations. This study presents several methods for assessing shallow water bathymetry using maritime uncrewed systems (MUSs) integrated with advanced and innovative sensors such as Light Detection and Ranging (LiDAR) and multibeam echosounder (MBES). Furthermore, this study comprehensively describes satellite-derived bathymetry (SDB) techniques within the same geographical area. Each technique is thoroughly outlined with respect to its implementation and resultant data, followed by an analytical comparison encompassing their accuracy, precision, rapidness, and operational efficiency. The accuracy and precision of the methods were evaluated using a bathymetric reference survey conducted with traditional means, prior to the MUS survey and with cross-comparisons between all the approaches. In each assessment of the survey methodologies, a comprehensive evaluation is conducted, explaining both the advantages and limitations for each approach, thereby enabling an inclusive understanding for the reader regarding the efficacy and applicability of these methods. The experiments were conducted as part of the Robotic Experimentation and Prototyping using Maritime Unmanned Systems 23 (REPMUS23) multinational exercise, which was part of the Rapid Environmental Assessment (REA) experimentations.","PeriodicalId":509629,"journal":{"name":"Inventions","volume":"21 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139802580","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 : 2024-02-05DOI: 10.3390/inventions9010020
Laurențiu-Florin Constantinoiu, António Tavares, Rui Miguel Cândido, Eugen Rusu
Shallow water bathymetry is a topic of significant interest in various fields, including civil construction, port monitoring, and military operations. This study presents several methods for assessing shallow water bathymetry using maritime uncrewed systems (MUSs) integrated with advanced and innovative sensors such as Light Detection and Ranging (LiDAR) and multibeam echosounder (MBES). Furthermore, this study comprehensively describes satellite-derived bathymetry (SDB) techniques within the same geographical area. Each technique is thoroughly outlined with respect to its implementation and resultant data, followed by an analytical comparison encompassing their accuracy, precision, rapidness, and operational efficiency. The accuracy and precision of the methods were evaluated using a bathymetric reference survey conducted with traditional means, prior to the MUS survey and with cross-comparisons between all the approaches. In each assessment of the survey methodologies, a comprehensive evaluation is conducted, explaining both the advantages and limitations for each approach, thereby enabling an inclusive understanding for the reader regarding the efficacy and applicability of these methods. The experiments were conducted as part of the Robotic Experimentation and Prototyping using Maritime Unmanned Systems 23 (REPMUS23) multinational exercise, which was part of the Rapid Environmental Assessment (REA) experimentations.
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Pub Date : 2024-02-01DOI: 10.3390/inventions9010019
Shubin Zhang, Y. Jiang
This paper presents a membrane electrode assembly (MEA) with a double-catalytic layered structure to improve the performance of the micro direct methanol fuel cell. The inner and outer parts of the double-catalytic layer comprise an unsupported and carbon-supported catalyst, respectively. A two-dimensional two-phase model of mass transport and electrochemical reaction is established and simulated to analyze the superiority of the double-catalytic layered structure. Simulation results show that this structure has a more uniform current density distribution and less over-potential across the catalyst layer. Methanol crossover is also reduced. Experimental results confirm that the MEA with the double-catalytic layered structure exhibits better performance than the traditional MEA. The adoption of a gas diffusion electrode as the outer catalytic layer and a catalyst-coated membrane as the inner layer of the double-catalytic layered structure can further improve the performance of the MEA. Both simulation and experimental results show the existence of an optimum number of metal loadings of the inner and outer parts of the double-catalytic layer.
本文介绍了一种具有双催化层结构的膜电极组件（MEA），以提高微型直接甲醇燃料电池的性能。双催化层的内层和外层分别由无支撑催化剂和碳支撑催化剂组成。建立并模拟了质量传输和电化学反应的二维两相模型，以分析双催化层结构的优越性。模拟结果表明，这种结构的电流密度分布更均匀，跨催化剂层的过电位更小。甲醇交叉也有所减少。实验结果证实，采用双催化分层结构的 MEA 比传统 MEA 表现出更好的性能。采用气体扩散电极作为外催化层，催化剂涂层膜作为双催化分层结构的内层，可以进一步提高 MEA 的性能。模拟和实验结果都表明，双催化层的内层和外层存在最佳的金属负载量。
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Pub Date : 2024-02-01DOI: 10.3390/inventions9010019
Shubin Zhang, Y. Jiang
This paper presents a membrane electrode assembly (MEA) with a double-catalytic layered structure to improve the performance of the micro direct methanol fuel cell. The inner and outer parts of the double-catalytic layer comprise an unsupported and carbon-supported catalyst, respectively. A two-dimensional two-phase model of mass transport and electrochemical reaction is established and simulated to analyze the superiority of the double-catalytic layered structure. Simulation results show that this structure has a more uniform current density distribution and less over-potential across the catalyst layer. Methanol crossover is also reduced. Experimental results confirm that the MEA with the double-catalytic layered structure exhibits better performance than the traditional MEA. The adoption of a gas diffusion electrode as the outer catalytic layer and a catalyst-coated membrane as the inner layer of the double-catalytic layered structure can further improve the performance of the MEA. Both simulation and experimental results show the existence of an optimum number of metal loadings of the inner and outer parts of the double-catalytic layer.
本文介绍了一种具有双催化层结构的膜电极组件（MEA），以提高微型直接甲醇燃料电池的性能。双催化层的内层和外层分别由无支撑催化剂和碳支撑催化剂组成。建立并模拟了质量传输和电化学反应的二维两相模型，以分析双催化层结构的优越性。模拟结果表明，这种结构的电流密度分布更均匀，跨催化剂层的过电位更小。甲醇交叉也有所减少。实验结果证实，采用双催化分层结构的 MEA 比传统 MEA 表现出更好的性能。采用气体扩散电极作为外催化层，催化剂涂层膜作为双催化分层结构的内层，可以进一步提高 MEA 的性能。模拟和实验结果都表明，双催化层的内层和外层存在最佳的金属负载量。
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Pub Date : 2024-01-26DOI: 10.3390/inventions9010018
Peter Makolo, R. Zamora, Uvini Perera, T. Lie
Increasing the replacement of conventional synchronous machines by non-synchronous renewable machines reduces the conventional synchronous generator (SG) inertia in the modern network. Synthetic inertia (SI) control topologies to provide frequency support are becoming a new frequency control tactic in new networks. However, the participation of SI in the market of RES-rich networks to provide instant frequency support when required proposes an increase in the overall marginal operation cost of contemporary networks. Consequently, depreciation of operation costs by optimizing the required SI in the network is inevitable. Therefore, this paper proposes a flexible SI optimization method. The algorithm developed in the proposed method minimizes the operation cost of the network by giving flexible SI at a given SG inertia and different sizes of contingency events. The proposed method uses Box’s evolutionary optimizer with a self-tuning capability of the SI control parameters. The proposed method is validated using the modified New England 39-bus network. The results show that provided SIs support the available SG inertia to reduce the RoCoF values and maintain them within acceptable limits to increase the network’s resilience.
在现代电网中，非同步可再生能源机器对传统同步机器的替代越来越多，从而降低了传统同步发电机（SG）的惯性。提供频率支持的合成惯性（SI）控制拓扑正在成为新网络中新的频率控制策略。然而，由于合成惯性（SI）参与了富含可再生能源的电网市场，可在需要时提供即时频率支持，因此会增加现代电网的整体边际运行成本。因此，通过优化网络中所需的 SI 来降低运营成本是不可避免的。因此，本文提出了一种灵活的 SI 优化方法。在给定的 SG 惯性和不同规模的突发事件条件下，该方法所开发的算法通过给出灵活的 SI，最大限度地降低了网络的运营成本。所提出的方法使用了具有自调整 SI 控制参数能力的 Box 进化优化器。利用修改后的新英格兰 39 总线网络对提出的方法进行了验证。结果表明，所提供的 SI 支持可用的 SG 惯性，以降低 RoCoF 值，并将其保持在可接受的范围内，从而提高网络的恢复能力。
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Pub Date : 2024-01-19DOI: 10.3390/inventions9010016
R. Mirea, G. Cican
The research experimentally examines the viability of biodiesel obtained from pork fat (BP) as a sustainable aviation fuel (SAF) when mixed with kerosene (Ke)—Jet-A aviation fuel + 5% Aeroshell 500 oil. Various blends of biodiesel and kerosene (10, 20, and 30% vol. of BP added in Ke) were subjected to testing in an aviation micro turbo-engine under different operational states: idle, cruise, and maximum power. During the tests, monitoring of engine parameters such as burning temperature, fuel consumption, and thrust force was conducted. The study also encompassed the calculation of crucial performance indicators like burning efficiency, thermal efficiency, and specific consumption for all fuel blends under maximum power conditions. Combustion temperatures ahead of the turbines rise with an increase in biodiesel concentration, particularly in the idle regime, without compromising engine integrity. However, for regimes 2 and 3, the temperature in front of the turbine decreases with rising biodiesel concentration, accompanied by an increase in fuel flow rate. This phenomenon is reflected in the elevated specific consumption. Notably, for regime 3, there is a noticeable rise in specific consumption, starting from S = 0.0264 kg/Nh when the turbo-engine operates solely with Ke, to S = 0.0266 kg/Nh for Ke + 10% BP, S = 0.0269 kg/Nh for Ke + 20% BP, and S = 0.0275 kg/Nh for Ke + 30% BP. Physical–chemical properties of the blends, encompassing density, viscosity, flash point, and calorific power, were determined. Furthermore, elemental analysis and FTIR were used for chemical composition determination. The amount of CO2 produced during the stoichiometric combustion reaction with air showed variations. Initially, when using only Ke, it amounted to 3.12 kg per kilogram of fuel. Upon adding 10% BP, this value decreased to 3.09 kg, further reducing to 3.05 kg with 20% BP. The lowest value was observed with 30% BP, reaching 3.04 kg. Experimental assessments were performed on the Jet Cat P80® micro-turbo-engine, covering aspects such as starting procedures, sudden acceleration, sudden deceleration, and emissions of pollutants (NOx, CO, and SO2) during several engine operational phases. The outcomes reveal that the examined fuel blends exhibited stable engine performance across all tested conditions. This indicates that these blends hold promise as sustainable aviation fuels for micro turbo-engines, presenting benefits in terms of diminished pollution and a more ecologically sound raw material base for fuel production.
该研究通过实验检验了从猪肉脂肪（BP）中提取的生物柴油与煤油（Ke）--Jet-A 航空燃料 + 5% Aeroshell 500 油混合后作为可持续航空燃料（SAF）的可行性。在航空微型涡轮增压发动机中对生物柴油和煤油的各种混合物（在煤油中添加 10、20 和 30% 体积的生物柴油）进行了不同工作状态下的测试：怠速、巡航和最大功率。测试期间，对燃烧温度、燃料消耗和推力等发动机参数进行了监测。研究还包括计算在最大功率条件下所有混合燃料的燃烧效率、热效率和比消耗等关键性能指标。涡轮前的燃烧温度随着生物柴油浓度的增加而升高，尤其是在怠速工况下，但不会影响发动机的完整性。然而，在工况 2 和 3 中，涡轮前的温度会随着生物柴油浓度的增加而降低，同时燃料流量也会增加。这一现象反映在比消耗量的增加上。值得注意的是，在制度 3 中，比消耗量明显上升，从涡轮发动机仅使用 Ke 时的 S = 0.0264 kg/Nh，到 Ke + 10% BP 时的 S = 0.0266 kg/Nh，Ke + 20% BP 时的 S = 0.0269 kg/Nh，以及 Ke + 30% BP 时的 S = 0.0275 kg/Nh。测定了混合物的物理化学特性，包括密度、粘度、闪点和热量。此外，还利用元素分析和傅立叶变换红外光谱测定了化学成分。在与空气进行化学合成燃烧反应过程中产生的二氧化碳量出现了变化。最初，只使用 Ke 时，每公斤燃料产生 3.12 公斤二氧化碳。添加 10% 的 BP 后，该值降至 3.09 千克，添加 20% 的 BP 后进一步降至 3.05 千克。30% BP 的最低值为 3.04 千克。在 Jet Cat P80® 微型涡轮增压发动机上进行了实验评估，评估内容包括起动程序、突然加速、突然减速以及发动机在多个运行阶段的污染物排放（氮氧化物、一氧化碳和二氧化硫）。结果表明，所研究的混合燃料在所有测试条件下都表现出稳定的发动机性能。这表明，这些混合燃料有望成为微型涡轮发动机的可持续航空燃料，从而减少污染，并为燃料生产提供更环保的原材料。
{"title":"Lab Scale Investigation of Gaseous Emissions, Performance and Stability of an Aviation Turbo-Engine While Running on Biodiesel Based Sustainable Aviation Fuel","authors":"R. Mirea, G. Cican","doi":"10.3390/inventions9010016","DOIUrl":"https://doi.org/10.3390/inventions9010016","url":null,"abstract":"The research experimentally examines the viability of biodiesel obtained from pork fat (BP) as a sustainable aviation fuel (SAF) when mixed with kerosene (Ke)—Jet-A aviation fuel + 5% Aeroshell 500 oil. Various blends of biodiesel and kerosene (10, 20, and 30% vol. of BP added in Ke) were subjected to testing in an aviation micro turbo-engine under different operational states: idle, cruise, and maximum power. During the tests, monitoring of engine parameters such as burning temperature, fuel consumption, and thrust force was conducted. The study also encompassed the calculation of crucial performance indicators like burning efficiency, thermal efficiency, and specific consumption for all fuel blends under maximum power conditions. Combustion temperatures ahead of the turbines rise with an increase in biodiesel concentration, particularly in the idle regime, without compromising engine integrity. However, for regimes 2 and 3, the temperature in front of the turbine decreases with rising biodiesel concentration, accompanied by an increase in fuel flow rate. This phenomenon is reflected in the elevated specific consumption. Notably, for regime 3, there is a noticeable rise in specific consumption, starting from S = 0.0264 kg/Nh when the turbo-engine operates solely with Ke, to S = 0.0266 kg/Nh for Ke + 10% BP, S = 0.0269 kg/Nh for Ke + 20% BP, and S = 0.0275 kg/Nh for Ke + 30% BP. Physical–chemical properties of the blends, encompassing density, viscosity, flash point, and calorific power, were determined. Furthermore, elemental analysis and FTIR were used for chemical composition determination. The amount of CO2 produced during the stoichiometric combustion reaction with air showed variations. Initially, when using only Ke, it amounted to 3.12 kg per kilogram of fuel. Upon adding 10% BP, this value decreased to 3.09 kg, further reducing to 3.05 kg with 20% BP. The lowest value was observed with 30% BP, reaching 3.04 kg. Experimental assessments were performed on the Jet Cat P80® micro-turbo-engine, covering aspects such as starting procedures, sudden acceleration, sudden deceleration, and emissions of pollutants (NOx, CO, and SO2) during several engine operational phases. The outcomes reveal that the examined fuel blends exhibited stable engine performance across all tested conditions. This indicates that these blends hold promise as sustainable aviation fuels for micro turbo-engines, presenting benefits in terms of diminished pollution and a more ecologically sound raw material base for fuel production.","PeriodicalId":509629,"journal":{"name":"Inventions","volume":"87 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139612964","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 : 2024-01-19DOI: 10.3390/inventions9010017
Seolha Kim, J. Baek, Myeongsu Jeong, Jinho Suh, Jaeyoul Lee
The surge in demand for automating seafood processing necessitates the development of robotic processes for transportation, packaging, and classification. South Korean companies are actively constructing diverse robots and grippers for fishcake handling, yet small workshops face spatial constraints. To address this, the study focuses on creating a gripper capable of versatile fishcake handling within compact spaces. The gripper, designed for single-robot use, employs three suction cups, adapting its grip based on fishcake shapes. Small fishcakes are gripped at the center with one suction cup, elongated ones with two cups aligned to the slope, and wider ones with three cups. A testbed with the gripper attached to a robot facilitates fishcake gripping, classification, and automation testing. Fishcake recognition and gripping tests revealed challenges based on shape, width, and material. Despite difficulties, a commendable 100% success rate was achieved for the majority of fishcakes, showcasing the gripper’s effectiveness. Identified improvements include reducing the suction cup diameter and increasing pressure for enhanced gripping and classification in confined spaces. The study demonstrates the successful development of a gripper for versatile fishcake handling, particularly beneficial for small workshops. The identified improvements offer pathways to enhance efficiency in fishcake gripping and classification within limited spaces.
{"title":"Development of Fishcake Gripping and Classification Automation Process Based on Suction Shape Transformation Gripper","authors":"Seolha Kim, J. Baek, Myeongsu Jeong, Jinho Suh, Jaeyoul Lee","doi":"10.3390/inventions9010017","DOIUrl":"https://doi.org/10.3390/inventions9010017","url":null,"abstract":"The surge in demand for automating seafood processing necessitates the development of robotic processes for transportation, packaging, and classification. South Korean companies are actively constructing diverse robots and grippers for fishcake handling, yet small workshops face spatial constraints. To address this, the study focuses on creating a gripper capable of versatile fishcake handling within compact spaces. The gripper, designed for single-robot use, employs three suction cups, adapting its grip based on fishcake shapes. Small fishcakes are gripped at the center with one suction cup, elongated ones with two cups aligned to the slope, and wider ones with three cups. A testbed with the gripper attached to a robot facilitates fishcake gripping, classification, and automation testing. Fishcake recognition and gripping tests revealed challenges based on shape, width, and material. Despite difficulties, a commendable 100% success rate was achieved for the majority of fishcakes, showcasing the gripper’s effectiveness. Identified improvements include reducing the suction cup diameter and increasing pressure for enhanced gripping and classification in confined spaces. The study demonstrates the successful development of a gripper for versatile fishcake handling, particularly beneficial for small workshops. The identified improvements offer pathways to enhance efficiency in fishcake gripping and classification within limited spaces.","PeriodicalId":509629,"journal":{"name":"Inventions","volume":"25 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139613595","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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