2019 Research, Invention, and Innovation Congress (RI2C)最新文献_第3页

Model Based Control of Battery/Supercapacitor Hybrid Source for Modern e-Vehicle 现代电动汽车电池/超级电容器混合电源的模型控制

2019 Research, Invention, and Innovation Congress (RI2C) Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999929

B. Yodwong, P. Mungporn, P. Thounthong, B. Nahid-Mobarakeh, N. Takorabet, D. Guilbert, N. Bizon, P. Kumam, Chaiyut Kaewprapha

引用次数: 1

Investigation of Critical Fault Clearing Time by Applying Different Excitation System Models 应用不同励磁系统模型研究临界故障清除时间

2019 Research, Invention, and Innovation Congress (RI2C) Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999916

Patrik Kastinen, N. Fuengwarodsakul, W. Wangdee

{"title":"Investigation of Critical Fault Clearing Time by Applying Different Excitation System Models","authors":"Patrik Kastinen, N. Fuengwarodsakul, W. Wangdee","doi":"10.1109/RI2C48728.2019.8999916","DOIUrl":"https://doi.org/10.1109/RI2C48728.2019.8999916","url":null,"abstract":"Evaluation of power system stability involves rotor angle stability which is done by determining the Critical Fault Clearing Time (CFCT). That is the maximum time a severe disturbance can be applied without the system losing its stability. Important factors to consider are power angle, moment of inertia of the whole power plant, X/R ratio in the net and which excitation system is being used for the synchronous generator. Prolonging the CFCT by changing reactance in the net or increasing the inertia constant by upgrading the power plant have been proven to be effective but expensive methods. The purpose of this paper is to understand CFCT and how tuning the excitation system can be a cost-effective method to extend it. Tuning in this paper done by monitoring the step responses on three different excitation models. Modelling and calculation are executed in a simulation software where a fault is simulated on one power line with one single 54.5 MW generator. CFCT is then first calculated with standard settings and later with adjusted settings. The rotor angle stability shows minor improvement after the tuning with different results for all three exciters.","PeriodicalId":404700,"journal":{"name":"2019 Research, Invention, and Innovation Congress (RI2C)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127908366","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}

引用次数: 4

Sectoral Spherical Dielectric Lens Antenna on a Reflector for Ku-band Communication ku波段通信反射器上扇形球形介质透镜天线

2019 Research, Invention, and Innovation Congress (RI2C) Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999902

S. Kittiwittayapong, K. Phaebua, T. Lertwiriyaprapa, D. Torrungrueng, H. Chou

{"title":"Sectoral Spherical Dielectric Lens Antenna on a Reflector for Ku-band Communication","authors":"S. Kittiwittayapong, K. Phaebua, T. Lertwiriyaprapa, D. Torrungrueng, H. Chou","doi":"10.1109/RI2C48728.2019.8999902","DOIUrl":"https://doi.org/10.1109/RI2C48728.2019.8999902","url":null,"abstract":"This paper proposes a compact sectoral spherical dielectric lens antenna on a reflector. The weight of the proposed 45-degree sectoral lens is significantly less than the original full spherical lens by a factor of 16. The unidirectional pattern suitable for Ku-band satellite communications, radar and other applications is achieved. Conventionally, a high-gain parabolic reflector antenna is low cost and popular for satellite communications. However, its antenna size is huge and usually installed on the rooftop. Thus, it is unsuited for installation on vehicles, aircrafts, ships and modern buildings. This paper proposes a size and weight reduction technique, where the 45-degree sectoral lens is installed in a corner reflector. A virtual source (image source) technique is employed to create virtual full spherical dielectric lens. The corner reflector increases the effective aperture area resulting in the antenna gain enhancement. It is found that the proposed antenna size is smaller than the conventional parabolic reflector and original full spherical lens with the same electrical performances. Thus, it is well suited for modern communication systems where a high-gain antennas are required.","PeriodicalId":404700,"journal":{"name":"2019 Research, Invention, and Innovation Congress (RI2C)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128574222","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}

引用次数: 2

DC-DC High Conversion Ratio Push-Pull Resonant Converter Based on Voltage Double Rectifier 基于电压双整流器的DC-DC高转换比推挽谐振变换器

2019 Research, Invention, and Innovation Congress (RI2C) Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999959

C. Ekkaravarodome, A. Bilsalam, W. Pattarapongsathit, P. Thounthong

引用次数: 3

Method to Decrease Complexity in Engineering Design and Technical Systems 降低工程设计和技术系统复杂性的方法

2019 Research, Invention, and Innovation Congress (RI2C) Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999947

K. Pimapunsri, Pattarawit Srimuang

引用次数: 0

PM2.5 Prediction based Weather Forecast Information and Missingness Challenges: A Case Study Industrial and Metropolis Areas 基于天气预报信息和缺失挑战的PM2.5预测:以工业和大都市地区为例

2019 Research, Invention, and Innovation Congress (RI2C) Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999941

Puttakul Sakul-Ung, Pitiporn Ruchanawet, Nataporn Thammabunwarit, Amornvit Vatcharaphrueksadee, Chatchawan Triperm, M. Sodanil

{"title":"PM2.5 Prediction based Weather Forecast Information and Missingness Challenges: A Case Study Industrial and Metropolis Areas","authors":"Puttakul Sakul-Ung, Pitiporn Ruchanawet, Nataporn Thammabunwarit, Amornvit Vatcharaphrueksadee, Chatchawan Triperm, M. Sodanil","doi":"10.1109/RI2C48728.2019.8999941","DOIUrl":"https://doi.org/10.1109/RI2C48728.2019.8999941","url":null,"abstract":"Air Quality Index (AQI) is one of the indicators used to identify risks associated with the air pollution that impact daily living. Recently, Thailand is one of the countries facing air quality problems with an increasing level of fine particulate matter (PM2.5) which has become a negative trend in the news and social media. The collected air quality information from sources are limited since they consist of missing data. Further study and research regarding missing data are required to obtain preventive and corrective actions. This paper has collected historical data from world weather online application programming interface to analyze the correlation between the various factors. The intuitive imputation algorithm called “Iterative Imputation based on Missingness Pattern Analysis (II-MPA),” using weather forecast data as a correlated factor to PM2.5 to impute the missing historical data. The comparison results show significant improvement in both imputation and prediction with the RMSE of 4.0 when using an unbiased dataset. This provides an alternative and fundamental concept for dealing with missing air quality data and is also a reachable predictive model for PM2.5 without using complex scientific data.","PeriodicalId":404700,"journal":{"name":"2019 Research, Invention, and Innovation Congress (RI2C)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128033715","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}

引用次数: 2

Fuzzy Analytic Hierarchy Process (AHP)-based Criteria Analysis for 3D Printer Selection in Additive Manufacturing 基于模糊层次分析法(AHP)的增材制造3D打印机选择准则分析

2019 Research, Invention, and Innovation Congress (RI2C) Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999950

Peerapat Khamhong, Chokechai Yingviwatanapong, K. Ransikarbum

{"title":"Fuzzy Analytic Hierarchy Process (AHP)-based Criteria Analysis for 3D Printer Selection in Additive Manufacturing","authors":"Peerapat Khamhong, Chokechai Yingviwatanapong, K. Ransikarbum","doi":"10.1109/RI2C48728.2019.8999950","DOIUrl":"https://doi.org/10.1109/RI2C48728.2019.8999950","url":null,"abstract":"Additive Manufacturing (AM) or 3 Dimensional Printing (3DP) has globally gained popularity from using digital technology in various applications. However, process planning for 3DP is challenged by different materials, technologies, and printer sizes, which impact efficient and effective use of 3DP. In this study, we evaluate the factors/criteria that are related to selecting the best alternative of 3D printers by analyzing two types of decision makers, which are 1) 3DP technical experts and 2) 3DP users. Next, we employ Fuzzy Analytic Hierarchy Process (Fuzzy AHP) to analyze criteria weights for 3D printer selection-related factors. In particular, factors concerning 3D printed product, 3D printer characteristics, and material properties are considered in this evaluation with a number of associated sub-factors. The initial results show that the most essential factor for both types of decision makers is product factor, followed by material, and printer, respectively. Group decision analysis shows relative weights to be 0.534 (53.4 %) for product factor, 0.301 (30.1 %) for material factor, and 0.175 (17.5%) for printer factor, respectively.","PeriodicalId":404700,"journal":{"name":"2019 Research, Invention, and Innovation Congress (RI2C)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128123414","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}

引用次数: 21

Passivity-Based Approach for Overhead Crane Anti-Sway Controller Design 基于被动的桥式起重机防摇摆控制器设计方法

2019 Research, Invention, and Innovation Congress (RI2C) Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999961

Jidapa Doktian, Witthawas Pongyart, P. Vanichchanunt

引用次数: 6

Understanding Key Enablers of Cloud Computing Adoption and Acceptance Over Time 随着时间的推移，理解云计算采用和接受的关键因素

2019 Research, Invention, and Innovation Congress (RI2C) Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999888

Nalinpat Porrawatpreyakorn, Siranee Nuchitprasitchai, Kanchana Viriyapant, Sakchai Tangprasert, Ajchareeya Chaipunyathat

{"title":"Understanding Key Enablers of Cloud Computing Adoption and Acceptance Over Time","authors":"Nalinpat Porrawatpreyakorn, Siranee Nuchitprasitchai, Kanchana Viriyapant, Sakchai Tangprasert, Ajchareeya Chaipunyathat","doi":"10.1109/RI2C48728.2019.8999888","DOIUrl":"https://doi.org/10.1109/RI2C48728.2019.8999888","url":null,"abstract":"Cloud computing has been increasingly implemented in various industries due to its benefits, e.g., more cost effectiveness, improved mobility and manageability, and enhanced content sharing. In Thailand, the current national Information and Communications Technology (ICT) master plan focuses to move into the era of digital economy effectively with cloud computing. However, many concerns, e.g., data security have been raised considerably in Thai cloud-based environments. To gain more understandings, this research aims to provide insights into key enablers of cloud computing adoption and acceptance and to compare identified key enablers with two different time periods. A systematic literature review and questionnaire-based surveys were performed. The review result from 46 original papers reveal 12 key enablers influencing cloud computing adoption and acceptance. These enablers were then ensured in the Thai government context by collecting data from 274 respondents during July - October 2017 and 216 practitioners during May - July 2019. The data were analyzed by stepwise multiple linear regressions. The findings indicate that two enablers (i.e., clear cloud usage policy and appropriate plan) continuously had significant correlations with cloud adoption; while three enablers (i.e., clear cloud usage policy, appropriate plan, and cost effectiveness) constantly had significant correlations with cloud acceptance, in both 2017 and 2019.","PeriodicalId":404700,"journal":{"name":"2019 Research, Invention, and Innovation Congress (RI2C)","volume":"60 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114023773","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}

引用次数: 0

Improvement of Transmission Measuring for The Robotic Wireless Control 机器人无线控制中传输测量的改进

2019 Research, Invention, and Innovation Congress (RI2C) Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999946

S. Dentri, Adisak Romputtal, B. Luadang

引用次数: 0