Pub Date : 2019-11-01DOI: 10.1109/ICECIE47765.2019.8974676
M. Bhattacharya, Rounak Datta, R. A. Uthra
Statistical methods are often fitting solutions to prediction and classification problems. Case studies have revealed that premature death is a priority problem in India and has often been rooted to malnutrition and birth-transmitted diseases. Aggregation of such medical and mortality records data helps to reveal important correlations between multiple factors affecting and aggravating the health conditions. The ground of research on the prediction of these diseases based on their severity has helped in opening up scopes of developing robust and swifter alternatives and taking affirmative actions to prevent further deaths. Bayesian methods have been proved to be more accurate in such case of spatial and temporal data points. This research explores the application of Local-Invariant and Independent features on various prolific algorithms like Bayesian Model Averaging, MHMCMC, RJ-MCMC and Bayesian Tail Regression. Further more likelihood estimators are used to predict the parameters and also measure the sampling accuracy. The proposed approach obtains a posterior probability of 91% for the simulated dataset from various regions involving several severity parameters.
{"title":"Comparative Analysis of Bayesian Methods for Estimation of Locally-Invariant Extremes","authors":"M. Bhattacharya, Rounak Datta, R. A. Uthra","doi":"10.1109/ICECIE47765.2019.8974676","DOIUrl":"https://doi.org/10.1109/ICECIE47765.2019.8974676","url":null,"abstract":"Statistical methods are often fitting solutions to prediction and classification problems. Case studies have revealed that premature death is a priority problem in India and has often been rooted to malnutrition and birth-transmitted diseases. Aggregation of such medical and mortality records data helps to reveal important correlations between multiple factors affecting and aggravating the health conditions. The ground of research on the prediction of these diseases based on their severity has helped in opening up scopes of developing robust and swifter alternatives and taking affirmative actions to prevent further deaths. Bayesian methods have been proved to be more accurate in such case of spatial and temporal data points. This research explores the application of Local-Invariant and Independent features on various prolific algorithms like Bayesian Model Averaging, MHMCMC, RJ-MCMC and Bayesian Tail Regression. Further more likelihood estimators are used to predict the parameters and also measure the sampling accuracy. The proposed approach obtains a posterior probability of 91% for the simulated dataset from various regions involving several severity parameters.","PeriodicalId":154051,"journal":{"name":"2019 1st International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126252589","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 : 2019-11-01DOI: 10.1109/ICECIE47765.2019.8974756
Mohamed Zied Chaari, S. Al-Máadeed
The purpose of this work is to present new technology of acquiring energy from the Ultra-wideband (UWB) station and stored in a super-capacitor to charge any electronic device. Many electronic devices operate in critical conditions where it is costly, inaccessible to replace the battery. Examples include sensors of cardiovascular diseases [1][2], aircraft or structural building tracks, oil, and gas platform [3][4]. The research is developing and design a t-shirt it contains a circuit can harvesting the radiofrequency energy around us from many radio station and store this scavenging power in super-capacitor. The evident system of acquiring RF energy is to design spiral antennas are tuned to scavenge RF energy from the ultra-wideband. The device is installed into the jacket, as shown in Figure 1. This device consists of an antenna connected to a small circuit that can collect the harvested signals for charging many electronic devices.
{"title":"Spiral Antenna Mounted on the t-Shirt to Harvested RF Energy","authors":"Mohamed Zied Chaari, S. Al-Máadeed","doi":"10.1109/ICECIE47765.2019.8974756","DOIUrl":"https://doi.org/10.1109/ICECIE47765.2019.8974756","url":null,"abstract":"The purpose of this work is to present new technology of acquiring energy from the Ultra-wideband (UWB) station and stored in a super-capacitor to charge any electronic device. Many electronic devices operate in critical conditions where it is costly, inaccessible to replace the battery. Examples include sensors of cardiovascular diseases [1][2], aircraft or structural building tracks, oil, and gas platform [3][4]. The research is developing and design a t-shirt it contains a circuit can harvesting the radiofrequency energy around us from many radio station and store this scavenging power in super-capacitor. The evident system of acquiring RF energy is to design spiral antennas are tuned to scavenge RF energy from the ultra-wideband. The device is installed into the jacket, as shown in Figure 1. This device consists of an antenna connected to a small circuit that can collect the harvested signals for charging many electronic devices.","PeriodicalId":154051,"journal":{"name":"2019 1st International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115802783","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 : 2019-11-01DOI: 10.1109/ICECIE47765.2019.8974751
Zhen Li, T. Tiong, K. Wong
Distributed generation with wind power and solar power has gained increasing penetration to the power system. This changed the operating conditions and degraded the power system stabilizers (PSS) for synchronous generator performances. PSS tuning have been studied to provide damping to suppress low frequency oscillations. IEEE 9-bus system is modified to include wind turbine and photovoltaic (PV) array. ETAP simulation results on modified IEEE 9-bus system show that PSS4C can outperform improved particle swarm optimized PSS4B (GPSO-PSS4B) and PSS4B in suppressing very low frequency oscillations.
{"title":"Transient Stability Improvement by using PSS4C in Hybrid PV Wind Power System","authors":"Zhen Li, T. Tiong, K. Wong","doi":"10.1109/ICECIE47765.2019.8974751","DOIUrl":"https://doi.org/10.1109/ICECIE47765.2019.8974751","url":null,"abstract":"Distributed generation with wind power and solar power has gained increasing penetration to the power system. This changed the operating conditions and degraded the power system stabilizers (PSS) for synchronous generator performances. PSS tuning have been studied to provide damping to suppress low frequency oscillations. IEEE 9-bus system is modified to include wind turbine and photovoltaic (PV) array. ETAP simulation results on modified IEEE 9-bus system show that PSS4C can outperform improved particle swarm optimized PSS4B (GPSO-PSS4B) and PSS4B in suppressing very low frequency oscillations.","PeriodicalId":154051,"journal":{"name":"2019 1st International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116007883","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 : 2019-11-01DOI: 10.1109/ICECIE47765.2019.8974769
Engr. Stanley Glenn E. Brucal, Engr. Sergio R. Peruda, Daichi A. Cabesas, Elliah James C. Ramos, Jeane Dominique A. Roa, Tristan John Dwayne R. Tuico
The 12-Lead ECG using NI MYRIO 1900 is a portable device for acquisition of heart signals to be used in interpretation and analysis. The rural areas of the Philippines have few health professionals, and high cost of healthcare services, making people inaccessible to primary healthcare including heart health. This portable medical device can be very useful for them. A portable electrocardiograph (ECG) can help the people monitor heart conditions much easier because of its accessibility and easy-to-understand functions. This device is developed using graphical programming through NI LabView and a reconfigurable input/output device which is NI MyRIO 1900. It can produce ECG values of Heart Rate, QRS Duration and QT Interval of patients of different ages and have interpretation and Data Analytics. During the system testing, the ECG values obtained from the device were compared to the ECG values of the same patients obtained from the conventional ECG test done in hospitals and clinics. The system achieved an accuracy rate of 90.68 percent. The results of this study show that the system can benefit the community on having an on-hand analysis of their primary heart status.
{"title":"Development of a Portable 12 Lead ECG Signal Acquisition System using National Instruments' MyRio-1900","authors":"Engr. Stanley Glenn E. Brucal, Engr. Sergio R. Peruda, Daichi A. Cabesas, Elliah James C. Ramos, Jeane Dominique A. Roa, Tristan John Dwayne R. Tuico","doi":"10.1109/ICECIE47765.2019.8974769","DOIUrl":"https://doi.org/10.1109/ICECIE47765.2019.8974769","url":null,"abstract":"The 12-Lead ECG using NI MYRIO 1900 is a portable device for acquisition of heart signals to be used in interpretation and analysis. The rural areas of the Philippines have few health professionals, and high cost of healthcare services, making people inaccessible to primary healthcare including heart health. This portable medical device can be very useful for them. A portable electrocardiograph (ECG) can help the people monitor heart conditions much easier because of its accessibility and easy-to-understand functions. This device is developed using graphical programming through NI LabView and a reconfigurable input/output device which is NI MyRIO 1900. It can produce ECG values of Heart Rate, QRS Duration and QT Interval of patients of different ages and have interpretation and Data Analytics. During the system testing, the ECG values obtained from the device were compared to the ECG values of the same patients obtained from the conventional ECG test done in hospitals and clinics. The system achieved an accuracy rate of 90.68 percent. The results of this study show that the system can benefit the community on having an on-hand analysis of their primary heart status.","PeriodicalId":154051,"journal":{"name":"2019 1st International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114907292","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 : 2019-11-01DOI: 10.1109/ICECIE47765.2019.8974804
H. Takemoto, Terukazu Sato
In this research, the frequency resolution and the A/D converter resolution of the MCU for the digitally controlled LLC resonant converter are discussed. The appropriate value of the cutoff frequency in the RC filter of the feedback circuit is also examined. The goal of this research is to make use of results for design of the digital control of the LLC resonant converter. The MCU performs the PI control using the PFM control so that the output voltage becomes constant at 24V. This paper examines these appropriate values from the stability of the output voltage by experiment. As a result, it is found that the frequency resolution needs more than 2.14ns and the A/D converter resolution needs more than 35.4mV/LSB. Moreover it is found that the appropriate value of the cutoff frequency is about 1/50 of the switching frequency.
在本研究中，讨论了单片机的频率分辨率和A/D转换器分辨率，用于数控LLC谐振变换器。并对反馈电路RC滤波器中截止频率的合适取值进行了研究。本研究的目的是将研究结果用于有限责任公司谐振变换器的数字控制设计。MCU使用PFM控制执行PI控制，使输出电压恒定在24V。本文从输出电压的稳定性出发，通过实验验证了这些适宜值。结果发现，频率分辨率需要大于2.14ns, a /D转换器分辨率需要大于35.4mV/LSB。此外，还发现适当的截止频率值约为开关频率的1/50。
{"title":"Consideration of Frequency and A/D Converter Resolution for Digital Control of LLC Resonant Converter","authors":"H. Takemoto, Terukazu Sato","doi":"10.1109/ICECIE47765.2019.8974804","DOIUrl":"https://doi.org/10.1109/ICECIE47765.2019.8974804","url":null,"abstract":"In this research, the frequency resolution and the A/D converter resolution of the MCU for the digitally controlled LLC resonant converter are discussed. The appropriate value of the cutoff frequency in the RC filter of the feedback circuit is also examined. The goal of this research is to make use of results for design of the digital control of the LLC resonant converter. The MCU performs the PI control using the PFM control so that the output voltage becomes constant at 24V. This paper examines these appropriate values from the stability of the output voltage by experiment. As a result, it is found that the frequency resolution needs more than 2.14ns and the A/D converter resolution needs more than 35.4mV/LSB. Moreover it is found that the appropriate value of the cutoff frequency is about 1/50 of the switching frequency.","PeriodicalId":154051,"journal":{"name":"2019 1st International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122604950","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 : 2019-11-01DOI: 10.1109/ICECIE47765.2019.8974846
Sarah May Sibug-Torres, E. Enriquez
Potentiometric sensor arrays, or electronic tongues, are based on combining cross-sensitive electrodes with multivariate chemometric methods for the simultaneous quantitative determination of analytes in complex liquid media. While cross-sensitivity is recognized as a key feature of electronic tongues, there are currently no a priori theoretical approaches to evaluate which combination of cross-sensitive potentiometric sensors can form an effective array for quantitative multi-ion analysis prior to experimental trial-and-error. In this work, we report the derivation of a Fisher Information-based objective function and its implementation with genetic algorithm for a priori sensor selection in potentiometric sensor arrays. As an illustration of the utility of our method, we demonstrate the design of a potentiometric sensor array for the quantitative determination of Na+, K+, Mg2+, and Ca2+ in blood serum through the screening of a library of more than 300 ion-selective electrode membranes. The results of our analysis suggest that array configurations which are predicted to minimize error can have complex patterns of analyte cross-sensitivities. These alternative array configurations can be difficult to deduce intuitively or to discover by experimental trial-and-error. Simulated sensor array responses modeled by artificial neural networks demonstrate the utility of our our method to rank the performances of sensor array configurations.
{"title":"Design of Potentiometric Sensor Arrays Using Fisher Information and Genetic Algorithm","authors":"Sarah May Sibug-Torres, E. Enriquez","doi":"10.1109/ICECIE47765.2019.8974846","DOIUrl":"https://doi.org/10.1109/ICECIE47765.2019.8974846","url":null,"abstract":"Potentiometric sensor arrays, or electronic tongues, are based on combining cross-sensitive electrodes with multivariate chemometric methods for the simultaneous quantitative determination of analytes in complex liquid media. While cross-sensitivity is recognized as a key feature of electronic tongues, there are currently no a priori theoretical approaches to evaluate which combination of cross-sensitive potentiometric sensors can form an effective array for quantitative multi-ion analysis prior to experimental trial-and-error. In this work, we report the derivation of a Fisher Information-based objective function and its implementation with genetic algorithm for a priori sensor selection in potentiometric sensor arrays. As an illustration of the utility of our method, we demonstrate the design of a potentiometric sensor array for the quantitative determination of Na+, K+, Mg2+, and Ca2+ in blood serum through the screening of a library of more than 300 ion-selective electrode membranes. The results of our analysis suggest that array configurations which are predicted to minimize error can have complex patterns of analyte cross-sensitivities. These alternative array configurations can be difficult to deduce intuitively or to discover by experimental trial-and-error. Simulated sensor array responses modeled by artificial neural networks demonstrate the utility of our our method to rank the performances of sensor array configurations.","PeriodicalId":154051,"journal":{"name":"2019 1st International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124617223","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 : 2019-11-01DOI: 10.1109/ICECIE47765.2019.8974724
K. Biswas, P. Vasant, J. A. G. Vintaned, J. Watada
A variety of possible well types and so many complex drilling variables and constraints make the wellbore optimization problem a very challenging work. Several types of well are listed as directional wells, horizontal wells, redrilling wells, complex structure wells, cluster wells, and extended reach wells etcetera. Over the recent few years, the number of unconventional wells including deviated wells, highly deviated wells are steadily increasing. Directional drilling has some advantages over vertical drilling though it is more expensive. In drilling engineering, the optimization of wellbore plays an important role, which can be optimized based on minimization of length, mud pressure, critical pressure, etc. Till today so many approaches and methods are used to optimize this wellbore trajectory. From those methods in this study, we have focused on metaheuristic approaches based on PSO (particle swarm optimization) which will be used to optimize wellbore trajectory. This reduction of the wellbore length helps in establishing cost-effective approaches that can be utilized to resolve a group of complex trajectory optimization challenges. For smooth and effective performance (i.e. quickly locating global optima while taking the shortest amount of computational time) we must identify flexible control parameters. Later this parameter can be effectively fixed to tune different algorithm. This research will propose a new neighborhood function with Particle swarm optimization(PSO) algorithm for minimizing the true measured depth (TMD). In this paper, the authors have proposed a particle swarm optimization with neighbourhood function to solve this problem. Later the authors will compare this method with conventional methods.
{"title":"Metaheuristic Algorithm for Wellbore Trajectory Optimization","authors":"K. Biswas, P. Vasant, J. A. G. Vintaned, J. Watada","doi":"10.1109/ICECIE47765.2019.8974724","DOIUrl":"https://doi.org/10.1109/ICECIE47765.2019.8974724","url":null,"abstract":"A variety of possible well types and so many complex drilling variables and constraints make the wellbore optimization problem a very challenging work. Several types of well are listed as directional wells, horizontal wells, redrilling wells, complex structure wells, cluster wells, and extended reach wells etcetera. Over the recent few years, the number of unconventional wells including deviated wells, highly deviated wells are steadily increasing. Directional drilling has some advantages over vertical drilling though it is more expensive. In drilling engineering, the optimization of wellbore plays an important role, which can be optimized based on minimization of length, mud pressure, critical pressure, etc. Till today so many approaches and methods are used to optimize this wellbore trajectory. From those methods in this study, we have focused on metaheuristic approaches based on PSO (particle swarm optimization) which will be used to optimize wellbore trajectory. This reduction of the wellbore length helps in establishing cost-effective approaches that can be utilized to resolve a group of complex trajectory optimization challenges. For smooth and effective performance (i.e. quickly locating global optima while taking the shortest amount of computational time) we must identify flexible control parameters. Later this parameter can be effectively fixed to tune different algorithm. This research will propose a new neighborhood function with Particle swarm optimization(PSO) algorithm for minimizing the true measured depth (TMD). In this paper, the authors have proposed a particle swarm optimization with neighbourhood function to solve this problem. Later the authors will compare this method with conventional methods.","PeriodicalId":154051,"journal":{"name":"2019 1st International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)","volume":"63 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134316688","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 : 2019-11-01DOI: 10.1109/ICECIE47765.2019.8974711
S. Ullah, A. Haidar, Kashem M. Muttaq, T. Ahfock
Recent research and advancement in DC systems reveal that DC distribution may be an efficient, reliable and economical solution to avoid the inherent issues associated with AC power systems such as frequency control, harmonics and synchronization. However, some key operational issues in DC micro-grids are to ensure a stable output voltage and proper load sharing among the sources. Improper current sharing and voltage variations in the conventional droop control causes circulating currents due to the presence of droop and line resistance between converters. This paper presents a distributed secondary control strategy to smooth the output voltage and maintain power sharing based on average current/voltage control and circulating current minimization. Further, an additional current feedback loop is introduced to modify the micro-grid reference voltage during overload conditions for minimizing the line voltage drop and power losses. The conventional communication links are used for exchanging information to the relevant controllers simultaneously to implement the proposed distributed control. The performance of the proposed approach has been verified by simulating two parallel Buck converters supplying a common load. The effect of load switching on voltage regulation and power sharing has also been analyzed.
{"title":"A Distributed Secondary Control Strategy for Power Sharing and Voltage Regulation by Multiple Converters in DC Micro-grids","authors":"S. Ullah, A. Haidar, Kashem M. Muttaq, T. Ahfock","doi":"10.1109/ICECIE47765.2019.8974711","DOIUrl":"https://doi.org/10.1109/ICECIE47765.2019.8974711","url":null,"abstract":"Recent research and advancement in DC systems reveal that DC distribution may be an efficient, reliable and economical solution to avoid the inherent issues associated with AC power systems such as frequency control, harmonics and synchronization. However, some key operational issues in DC micro-grids are to ensure a stable output voltage and proper load sharing among the sources. Improper current sharing and voltage variations in the conventional droop control causes circulating currents due to the presence of droop and line resistance between converters. This paper presents a distributed secondary control strategy to smooth the output voltage and maintain power sharing based on average current/voltage control and circulating current minimization. Further, an additional current feedback loop is introduced to modify the micro-grid reference voltage during overload conditions for minimizing the line voltage drop and power losses. The conventional communication links are used for exchanging information to the relevant controllers simultaneously to implement the proposed distributed control. The performance of the proposed approach has been verified by simulating two parallel Buck converters supplying a common load. The effect of load switching on voltage regulation and power sharing has also been analyzed.","PeriodicalId":154051,"journal":{"name":"2019 1st International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124012360","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 : 2019-11-01DOI: 10.1109/ICECIE47765.2019.8974720
Amjad Barzan Abdulghafour, A. Hassan
The computer aided design and manufacturing CAD/CAM integration systems were focused on product representation techniques or product modeling. In product design process trends are currently tend to use freeform surface that modeling by using (Non-Uniform Rational B-Spline Surface (NURBS), B-spline, Bezier) technique to suit aesthetic, functional and manufacturability requirements. Set of problem are faced difficulties in recognizing freeform feature such polishing process after the finishing machining process by multi-axis CNC machine, sheet metal forming, and freeform surface machining. In this research, a new developed methodology has been introduced for automatic recognition of the depression and protrusion features. The 3D CAD solid model is designed by freeform surfaces of non-uniform B-spline technique and then extracts their parameter by IGES standard format file. The developed methodology has four major steps: Subdivision of Non-uniform B-spline surface, surface analysis, primitives shape detection, and recognition of geometric features.
{"title":"Feature Recognition of Freeform Surfaces for CAD/CAM Integration","authors":"Amjad Barzan Abdulghafour, A. Hassan","doi":"10.1109/ICECIE47765.2019.8974720","DOIUrl":"https://doi.org/10.1109/ICECIE47765.2019.8974720","url":null,"abstract":"The computer aided design and manufacturing CAD/CAM integration systems were focused on product representation techniques or product modeling. In product design process trends are currently tend to use freeform surface that modeling by using (Non-Uniform Rational B-Spline Surface (NURBS), B-spline, Bezier) technique to suit aesthetic, functional and manufacturability requirements. Set of problem are faced difficulties in recognizing freeform feature such polishing process after the finishing machining process by multi-axis CNC machine, sheet metal forming, and freeform surface machining. In this research, a new developed methodology has been introduced for automatic recognition of the depression and protrusion features. The 3D CAD solid model is designed by freeform surfaces of non-uniform B-spline technique and then extracts their parameter by IGES standard format file. The developed methodology has four major steps: Subdivision of Non-uniform B-spline surface, surface analysis, primitives shape detection, and recognition of geometric features.","PeriodicalId":154051,"journal":{"name":"2019 1st International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134284092","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 : 2019-11-01DOI: 10.1109/ICECIE47765.2019.8974781
T. H. Kuan, K. W. Chew, K. Chua
A reputable Surge Protection Device (SPD) manufacturer designed, tested and produced SPD complying with the internationally accepted standard such as UL 96A, UL1449, IEC 61643, IEC 62305 and etc., where this standard put in place the requirement on the thermal disconnect to prevent SPD from overheated catching fire, housing material from releasing toxic gases and so on. Therefore, when an SPD which carried international approval, the selection is mainly focused on the let-through voltage, kA rating and protection class or zone per ANSI/IEEE C62.4 and IEC 62305–4. This is sufficient when the application is for a safe area (no present of explosive gases). However, when the application involves the presence of explosive gas in a hazardous area, for example, in the Oil and Gas industry, additional consideration will be required. This paper discussed the application and consideration of SPD for hazardous areas with various explosion protection techniques.
{"title":"Practical approach on surge protection device for Ex application","authors":"T. H. Kuan, K. W. Chew, K. Chua","doi":"10.1109/ICECIE47765.2019.8974781","DOIUrl":"https://doi.org/10.1109/ICECIE47765.2019.8974781","url":null,"abstract":"A reputable Surge Protection Device (SPD) manufacturer designed, tested and produced SPD complying with the internationally accepted standard such as UL 96A, UL1449, IEC 61643, IEC 62305 and etc., where this standard put in place the requirement on the thermal disconnect to prevent SPD from overheated catching fire, housing material from releasing toxic gases and so on. Therefore, when an SPD which carried international approval, the selection is mainly focused on the let-through voltage, kA rating and protection class or zone per ANSI/IEEE C62.4 and IEC 62305–4. This is sufficient when the application is for a safe area (no present of explosive gases). However, when the application involves the presence of explosive gas in a hazardous area, for example, in the Oil and Gas industry, additional consideration will be required. This paper discussed the application and consideration of SPD for hazardous areas with various explosion protection techniques.","PeriodicalId":154051,"journal":{"name":"2019 1st International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133482171","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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