Pub Date : 2018-09-01DOI: 10.1109/ICEEE.2018.8533930
Daniel Quintana, V. Estrada-Manzo, M. Bernal
This paper is concerned with the design and real-time implementation of nonlinear observers via convex optimization techniques. The well-known problem of unmeasurable premises is overcome by employing only known signals for the observer while the difficulty of obtaining the error system is solved by algebraic rearrangements and Taylor series. The resulting error dynamics are exactly rewritten as a tensor-product polytope which enables solving for the observer gains via linear matrix inequalities. Both simulation and real-time examples are provided.
{"title":"A Methodology for Real-Time Implementation of Nonlinear Observers via Convex Optimization","authors":"Daniel Quintana, V. Estrada-Manzo, M. Bernal","doi":"10.1109/ICEEE.2018.8533930","DOIUrl":"https://doi.org/10.1109/ICEEE.2018.8533930","url":null,"abstract":"This paper is concerned with the design and real-time implementation of nonlinear observers via convex optimization techniques. The well-known problem of unmeasurable premises is overcome by employing only known signals for the observer while the difficulty of obtaining the error system is solved by algebraic rearrangements and Taylor series. The resulting error dynamics are exactly rewritten as a tensor-product polytope which enables solving for the observer gains via linear matrix inequalities. Both simulation and real-time examples are provided.","PeriodicalId":6924,"journal":{"name":"2018 15th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE)","volume":"1 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89225685","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 : 2018-09-01DOI: 10.1109/ICEEE.2018.8533978
C. E. Valencia, Carlos A. Alfaro, F. Martínez, Marcos Cesar Vargas Magana, Sergio Luis Pérez-Pérez
The multidimensional assignment problem (MAP), also known as multi-index assignment problem, is a natural extension of the assignment problem. A MAP deals with the question of how to assign elements from s disjoint sets with n1,…,ns items on each. A MAP with s dimensions is called a sAP. Local search heuristics and Memetic algorithms have been proven to be the most effective techniques to solve MAP. In this work we use an exact technique that outperforms some local searches and Memetic algorithms on several instances of MAP. Then, we design a heuristic that uses repeatedly our exact technique in order to provide high quality solutions for harder types of instances of MAP. We perform an experimental evaluation of our exact technique and of our heuristic and we show its effectiveness against more complex local searches and some Memetic algorithms for MAP.
{"title":"Outperforming Several Heuristics for the Multidimensional Assignment Problem","authors":"C. E. Valencia, Carlos A. Alfaro, F. Martínez, Marcos Cesar Vargas Magana, Sergio Luis Pérez-Pérez","doi":"10.1109/ICEEE.2018.8533978","DOIUrl":"https://doi.org/10.1109/ICEEE.2018.8533978","url":null,"abstract":"The multidimensional assignment problem (MAP), also known as multi-index assignment problem, is a natural extension of the assignment problem. A MAP deals with the question of how to assign elements from s disjoint sets with n1,…,ns items on each. A MAP with s dimensions is called a sAP. Local search heuristics and Memetic algorithms have been proven to be the most effective techniques to solve MAP. In this work we use an exact technique that outperforms some local searches and Memetic algorithms on several instances of MAP. Then, we design a heuristic that uses repeatedly our exact technique in order to provide high quality solutions for harder types of instances of MAP. We perform an experimental evaluation of our exact technique and of our heuristic and we show its effectiveness against more complex local searches and some Memetic algorithms for MAP.","PeriodicalId":6924,"journal":{"name":"2018 15th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE)","volume":"130 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89469452","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 : 2018-09-01DOI: 10.1109/ICEEE.2018.8533910
G. Regmi, J. Narro-Rios, Adhikari Ashok, O. Nwakanma, S. Velumani, F. A. Pulgarin-Agudelo
Metallic elements copper (Cu), indium (In), and gallium (Ga) thin films for solar cell absorber layer were deposited by evaporation technique at ambient temperature and then the whole structure was selenized at various temperature ranging from 450 °C to 550 °C at different durations (30, 45 and 60 min). The effect of selenization on structural, morphological, topographical, and electrical properties of prepared films was studied. We observed a strong dependence of the properties of CIGSe films on the growth mechanism as well as the chemical composition. The results showed that 450 °C and 500 °C of selenization temperature was not sufficient for the inter-diffusion of all elements forming a good CIGSe absorber layer. Instead, the film selenized at 550 °C showed a better result which could be a good absorber layer for highly efficient CIGSe based thin film solar cells.
{"title":"Structural, Morphological, Topographical, and Electrical Properties of Selenized Stacked CIGSe Layers by Evaporation Technique","authors":"G. Regmi, J. Narro-Rios, Adhikari Ashok, O. Nwakanma, S. Velumani, F. A. Pulgarin-Agudelo","doi":"10.1109/ICEEE.2018.8533910","DOIUrl":"https://doi.org/10.1109/ICEEE.2018.8533910","url":null,"abstract":"Metallic elements copper (Cu), indium (In), and gallium (Ga) thin films for solar cell absorber layer were deposited by evaporation technique at ambient temperature and then the whole structure was selenized at various temperature ranging from 450 °C to 550 °C at different durations (30, 45 and 60 min). The effect of selenization on structural, morphological, topographical, and electrical properties of prepared films was studied. We observed a strong dependence of the properties of CIGSe films on the growth mechanism as well as the chemical composition. The results showed that 450 °C and 500 °C of selenization temperature was not sufficient for the inter-diffusion of all elements forming a good CIGSe absorber layer. Instead, the film selenized at 550 °C showed a better result which could be a good absorber layer for highly efficient CIGSe based thin film solar cells.","PeriodicalId":6924,"journal":{"name":"2018 15th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE)","volume":"110 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86739330","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 : 2018-09-01DOI: 10.1109/ICEEE.2018.8534000
G. Martinez
An algorithm capable of computing the robot position by evaluating measurements of frame to frame intensity differences was extended to be able to detect outliers in the measurements to exclude them from the evaluation to perform the positioning, with the aim of improving its robustness in irregular terrain scenes, such as consisting of flat surfaces with stones on them. The images are taken by a camera firmly attached to the robot, tilted downwards, looking at the planetary surface. A measurement is detected as an outlier only if its intensity difference and linear intensity gradients can not be described by motion compensation. According to the experimental results, this modification reduced the positioning error by a factor of one third in difficult terrain, maintaining its positioning error, which resulted in an average of 1.8%, within a range of 0.15% and 2.5% of distance traveled, similar to those achieved by state of the art algorithms successfully used in robots here on earth and on Mars.
{"title":"Improving the Robustness of a Direct Visual Odometry Algorithm for Planetary Rovers","authors":"G. Martinez","doi":"10.1109/ICEEE.2018.8534000","DOIUrl":"https://doi.org/10.1109/ICEEE.2018.8534000","url":null,"abstract":"An algorithm capable of computing the robot position by evaluating measurements of frame to frame intensity differences was extended to be able to detect outliers in the measurements to exclude them from the evaluation to perform the positioning, with the aim of improving its robustness in irregular terrain scenes, such as consisting of flat surfaces with stones on them. The images are taken by a camera firmly attached to the robot, tilted downwards, looking at the planetary surface. A measurement is detected as an outlier only if its intensity difference and linear intensity gradients can not be described by motion compensation. According to the experimental results, this modification reduced the positioning error by a factor of one third in difficult terrain, maintaining its positioning error, which resulted in an average of 1.8%, within a range of 0.15% and 2.5% of distance traveled, similar to those achieved by state of the art algorithms successfully used in robots here on earth and on Mars.","PeriodicalId":6924,"journal":{"name":"2018 15th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE)","volume":"2675 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87814189","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 : 2018-09-01DOI: 10.1109/ICEEE.2018.8533973
R. Martínez-Guerra, Juan Pablo Flores-Flores
In this paper a proportional integral reduced order observer (PIO) for the synchronization problem of a class of nondifferentially flat chaotic systems is proposed. In order to take advantage of the system characteristics, differential polynomials are used for the observer design. The asymptotic stability proof for the resulting estimation error is given. The effectiveness of the methodology proposed here is exemplified by designing a PIO for a Lorenz attractor and doing the respective numerical simulation. The results obtained by the PIO are contrasted with those acquired by a proportional observer (PO) whose design is based in the same methodology, this in order to show the improvement given by an integral action.
{"title":"Synchronization for a class of nondifferentially flat chaotic systems by means of a PI Observer","authors":"R. Martínez-Guerra, Juan Pablo Flores-Flores","doi":"10.1109/ICEEE.2018.8533973","DOIUrl":"https://doi.org/10.1109/ICEEE.2018.8533973","url":null,"abstract":"In this paper a proportional integral reduced order observer (PIO) for the synchronization problem of a class of nondifferentially flat chaotic systems is proposed. In order to take advantage of the system characteristics, differential polynomials are used for the observer design. The asymptotic stability proof for the resulting estimation error is given. The effectiveness of the methodology proposed here is exemplified by designing a PIO for a Lorenz attractor and doing the respective numerical simulation. The results obtained by the PIO are contrasted with those acquired by a proportional observer (PO) whose design is based in the same methodology, this in order to show the improvement given by an integral action.","PeriodicalId":6924,"journal":{"name":"2018 15th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE)","volume":"36 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88500313","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 : 2018-09-01DOI: 10.1109/ICEEE.2018.8534001
B. Granados-Rojas, M. Reyes-Barranca, L. M. Flores-Nava, G. Abarca-Jimenez, S. Mendoza-Acevedo, Y. E. González-Navarro
In this work an initial approach and requirements overview is performed in order to promote awareness on the compatibility between CMOS – MEMS sensor devices design and the group of heuristic techniques known as genetic algorithms. As might be known, genetic algorithms (GAs) main application is in the field of multivariable functions optimization and this kind of iterative procedures in their simplest forms may be suitable to serve as a tool in the automation of design of integrated CMOS devices and technologies where the variables and restrictions are known. FGMOS-based devices along with MEMS structures when embedded in a single-chip platform (CMOS – MEMS technology) are expected to be in compliance with a set of design rules for both their mechanical and electrical properties, making easier to code and decode variables for their use in a GA in a discrete always-positive basis. In this approach, parasitic and process-resolution-related issues are neglected and further analysis based in a more detailed modeling and parameter restrictions is encouraged.
{"title":"Application and Resulting Suitability of a Genetic Algorithm in the Design of FGMOS-based CMOS-MEMS Transducers","authors":"B. Granados-Rojas, M. Reyes-Barranca, L. M. Flores-Nava, G. Abarca-Jimenez, S. Mendoza-Acevedo, Y. E. González-Navarro","doi":"10.1109/ICEEE.2018.8534001","DOIUrl":"https://doi.org/10.1109/ICEEE.2018.8534001","url":null,"abstract":"In this work an initial approach and requirements overview is performed in order to promote awareness on the compatibility between CMOS – MEMS sensor devices design and the group of heuristic techniques known as genetic algorithms. As might be known, genetic algorithms (GAs) main application is in the field of multivariable functions optimization and this kind of iterative procedures in their simplest forms may be suitable to serve as a tool in the automation of design of integrated CMOS devices and technologies where the variables and restrictions are known. FGMOS-based devices along with MEMS structures when embedded in a single-chip platform (CMOS – MEMS technology) are expected to be in compliance with a set of design rules for both their mechanical and electrical properties, making easier to code and decode variables for their use in a GA in a discrete always-positive basis. In this approach, parasitic and process-resolution-related issues are neglected and further analysis based in a more detailed modeling and parameter restrictions is encouraged.","PeriodicalId":6924,"journal":{"name":"2018 15th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE)","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87616177","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 : 2018-09-01DOI: 10.1109/ICEEE.2018.8533929
Modar Shbat, F. C. O. Salazar, Javier S. Gonzalez Salas
For internet of things (IoT) implementation based on upcoming fifth generation (5G) mobile networks, the spectrum sensing (SS) capabilities should be considered following the related standards. In this paper, the technical challenges are addressed for blind, non-blind, coarse and fine SS to merge the cognitive radio (CR) advantages and capabilities with IoT nodes.
{"title":"Spectrum Sensing Challenges of IoT Nodes Designed under 5G Network Standards","authors":"Modar Shbat, F. C. O. Salazar, Javier S. Gonzalez Salas","doi":"10.1109/ICEEE.2018.8533929","DOIUrl":"https://doi.org/10.1109/ICEEE.2018.8533929","url":null,"abstract":"For internet of things (IoT) implementation based on upcoming fifth generation (5G) mobile networks, the spectrum sensing (SS) capabilities should be considered following the related standards. In this paper, the technical challenges are addressed for blind, non-blind, coarse and fine SS to merge the cognitive radio (CR) advantages and capabilities with IoT nodes.","PeriodicalId":6924,"journal":{"name":"2018 15th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE)","volume":"32 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90919920","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 : 2018-09-01DOI: 10.1109/ICEEE.2018.8533926
Alonso Cervantes, Paola Garcia, Cesar Herrera, Elizabeth Morales, Fernando Tarriba, Eduardo Tena, Hiram Ponce
In this paper, a mechatronic design of a firefighter drone is presented. Unmanned aerial vehicles have been around for years, they present characteristics that aloud them to be used for different purposes. Nowadays, these devices have become more popular and their application increases rapidly in various fields. This paper focuses on the implementation of a low cost device that can help to control a fire. By implementing a mechatronic device, it is possible to spot a fire on time, and extinguish it without risking humans lives. It is an emergency responder device that can assist firemen in fighting high rise fires. The description of the proposed mechatronic system is briefly described, as well as experiments that demonstrate its principal functionality.
{"title":"A Conceptual Design of a Firefighter Drone","authors":"Alonso Cervantes, Paola Garcia, Cesar Herrera, Elizabeth Morales, Fernando Tarriba, Eduardo Tena, Hiram Ponce","doi":"10.1109/ICEEE.2018.8533926","DOIUrl":"https://doi.org/10.1109/ICEEE.2018.8533926","url":null,"abstract":"In this paper, a mechatronic design of a firefighter drone is presented. Unmanned aerial vehicles have been around for years, they present characteristics that aloud them to be used for different purposes. Nowadays, these devices have become more popular and their application increases rapidly in various fields. This paper focuses on the implementation of a low cost device that can help to control a fire. By implementing a mechatronic device, it is possible to spot a fire on time, and extinguish it without risking humans lives. It is an emergency responder device that can assist firemen in fighting high rise fires. The description of the proposed mechatronic system is briefly described, as well as experiments that demonstrate its principal functionality.","PeriodicalId":6924,"journal":{"name":"2018 15th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE)","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91111254","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 : 2018-09-01DOI: 10.1109/iceee.2018.8533967
{"title":"[CCE 2018 call for papers]","authors":"","doi":"10.1109/iceee.2018.8533967","DOIUrl":"https://doi.org/10.1109/iceee.2018.8533967","url":null,"abstract":"","PeriodicalId":6924,"journal":{"name":"2018 15th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE)","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73244799","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 : 2018-09-01DOI: 10.1109/ICEEE.2018.8533985
P. D. L. Hoz, E. Jimenez, I. Oliveros, Andrea Silva, R. Castillo-Sierra, Mauricio Pardo
This paper presents the analysis of an actual scaled-IEEE-13 distribution feeder under different operating conditions including the modelling and simulation of variating solar energy contribution. The actual distribution feeder was built under the Universidad del Norte strategic energy area as a laboratory; therefore, the scaling and generator-load modules where carried out given the particular conditions of the university. This project becomes an actual test bench to fully explore strategies to many needs that exists today such as: energy efficiency, increased use of renewable energy, reduction of greenhouse gas emissions, increased safety of the supply and minimization of electrical losses. The main result of the present work is to defined the amount of solar energy that can be injected to a conventional power system, so that it can keep operation under a regulatory frame even under island operation, which allows to possibility to become a solution for lack of power from the network operator and/or explore schemes of distributed generation.
{"title":"UniGRID: Photovoltaic Study Case for the Universidad del Norte Renewable Energies Laboratory","authors":"P. D. L. Hoz, E. Jimenez, I. Oliveros, Andrea Silva, R. Castillo-Sierra, Mauricio Pardo","doi":"10.1109/ICEEE.2018.8533985","DOIUrl":"https://doi.org/10.1109/ICEEE.2018.8533985","url":null,"abstract":"This paper presents the analysis of an actual scaled-IEEE-13 distribution feeder under different operating conditions including the modelling and simulation of variating solar energy contribution. The actual distribution feeder was built under the Universidad del Norte strategic energy area as a laboratory; therefore, the scaling and generator-load modules where carried out given the particular conditions of the university. This project becomes an actual test bench to fully explore strategies to many needs that exists today such as: energy efficiency, increased use of renewable energy, reduction of greenhouse gas emissions, increased safety of the supply and minimization of electrical losses. The main result of the present work is to defined the amount of solar energy that can be injected to a conventional power system, so that it can keep operation under a regulatory frame even under island operation, which allows to possibility to become a solution for lack of power from the network operator and/or explore schemes of distributed generation.","PeriodicalId":6924,"journal":{"name":"2018 15th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE)","volume":"191 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74612268","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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