Pub Date : 2017-12-21DOI: 10.1109/CHILECON.2017.8229537
Aramis Pérez, Vanessa L. Quintero, Heraldo Rozas, Diego Jimenez, Francisco Jaramillo, M. Orchard
Depending on the application, power and energy requirements may differ significantly and, most likely, a single lithium-ion cell will not suffice. Battery packs offer cell interconnections that allow to obtain several possible voltage and discharge current ratings. Typically, the battery packs are designed to meet the specifications of the application within a certain range, and sometimes they are oversized just to consider degradation effects that may affect battery performance in the long term. However, operating a battery pack at different ranges for the state-of-charge and temperature, among other variables, might have a major impact on its lifespan. This paper, introduces a technique on how a modular battery pack can be designed in terms of extending the lifespan of the energy storage device, where each battery module has different capacity ratings. The available energy on each module of the battery pack is constrained and controlled to meet the electric demand, ensuring optimal ranges for the state-of-charge. Also, the article shows that it is possible to meet energy requirements with the modular battery pack at a lower cost than just a single module battery pack.
{"title":"Lithium-ion battery pack arrays for lifespan enhancement","authors":"Aramis Pérez, Vanessa L. Quintero, Heraldo Rozas, Diego Jimenez, Francisco Jaramillo, M. Orchard","doi":"10.1109/CHILECON.2017.8229537","DOIUrl":"https://doi.org/10.1109/CHILECON.2017.8229537","url":null,"abstract":"Depending on the application, power and energy requirements may differ significantly and, most likely, a single lithium-ion cell will not suffice. Battery packs offer cell interconnections that allow to obtain several possible voltage and discharge current ratings. Typically, the battery packs are designed to meet the specifications of the application within a certain range, and sometimes they are oversized just to consider degradation effects that may affect battery performance in the long term. However, operating a battery pack at different ranges for the state-of-charge and temperature, among other variables, might have a major impact on its lifespan. This paper, introduces a technique on how a modular battery pack can be designed in terms of extending the lifespan of the energy storage device, where each battery module has different capacity ratings. The available energy on each module of the battery pack is constrained and controlled to meet the electric demand, ensuring optimal ranges for the state-of-charge. Also, the article shows that it is possible to meet energy requirements with the modular battery pack at a lower cost than just a single module battery pack.","PeriodicalId":415811,"journal":{"name":"2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)","volume":"233 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114530975","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 : 2017-12-21DOI: 10.1109/CHILECON.2017.8229700
Marco Rivera, Hanbing Dan, L. Tarisciotti, Patrick Wheeler
One of the main drawbacks of the implementation of predictive control in a direct matrix converter is the high computational cost and the adequate selection of weighting factors in order to control both input and output sides. In this paper is proposed an indirect model predictive current control strategy enhanced with a fixed switching predictive strategy and an active damping implementation. With all this, the idea is to reduce the computational cost while eliminating the necessity of weighting factors and improving the performance of the full system. The proposed method is based on the fictitious dc-link concept, which has been used in the past for the classical modulation and control techniques of the direct matrix converter. Simulated results confirm the feasibility of the proposal demonstrating that it is an alternative method to classical predictive control strategies for the direct matrix converter.
{"title":"Indirect model predictive control strategy with active damping implementation for a direct matrix converter operating at fixed switching frequency","authors":"Marco Rivera, Hanbing Dan, L. Tarisciotti, Patrick Wheeler","doi":"10.1109/CHILECON.2017.8229700","DOIUrl":"https://doi.org/10.1109/CHILECON.2017.8229700","url":null,"abstract":"One of the main drawbacks of the implementation of predictive control in a direct matrix converter is the high computational cost and the adequate selection of weighting factors in order to control both input and output sides. In this paper is proposed an indirect model predictive current control strategy enhanced with a fixed switching predictive strategy and an active damping implementation. With all this, the idea is to reduce the computational cost while eliminating the necessity of weighting factors and improving the performance of the full system. The proposed method is based on the fictitious dc-link concept, which has been used in the past for the classical modulation and control techniques of the direct matrix converter. Simulated results confirm the feasibility of the proposal demonstrating that it is an alternative method to classical predictive control strategies for the direct matrix converter.","PeriodicalId":415811,"journal":{"name":"2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131611974","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 : 2017-12-19DOI: 10.1109/CHILECON.2017.8229514
Romina Torres, Mauricio R. Poblete, Rodrigo F. Salas
Nowadays, there are several effective computational intelligence techniques that, theoretically, could be useful to classify human daily life actions. Moreover, sensors are getting smaller, cheaper, portable and even wearable. In this paper, we have built an annotation tool by applying several computational intelligence techniques (K-Nearest Neighbor, the Support Vector Machine and the Multilayer Perceptron) to detect six types of human actions in daily life based on signals obtained from an accelerometer sensor (standing-up, walking, running, resting, jumping and sitting-down) with an accuracy over 85%. In the future, this component will be the base to infer abnormal behavior from common daily behavior that could be an emergency situation in evolution.
{"title":"Classifying human actions in daily life using computational intelligence techniques","authors":"Romina Torres, Mauricio R. Poblete, Rodrigo F. Salas","doi":"10.1109/CHILECON.2017.8229514","DOIUrl":"https://doi.org/10.1109/CHILECON.2017.8229514","url":null,"abstract":"Nowadays, there are several effective computational intelligence techniques that, theoretically, could be useful to classify human daily life actions. Moreover, sensors are getting smaller, cheaper, portable and even wearable. In this paper, we have built an annotation tool by applying several computational intelligence techniques (K-Nearest Neighbor, the Support Vector Machine and the Multilayer Perceptron) to detect six types of human actions in daily life based on signals obtained from an accelerometer sensor (standing-up, walking, running, resting, jumping and sitting-down) with an accuracy over 85%. In the future, this component will be the base to infer abnormal behavior from common daily behavior that could be an emergency situation in evolution.","PeriodicalId":415811,"journal":{"name":"2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121943778","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 : 2017-12-19DOI: 10.1109/CHILECON.2017.8229533
Romina Torres, Marcelo Aros, J. Calderón
Cyber-Physical Systems (CPSs) may fail during runtime on supporting decision making if they are not capable of detecting and correcting their own failures. Thus, it has been proposed that CPSs should be self-aware, context-aware and goal-aware. In this paper we present preliminary results about how an architecture built over the Extensible Messaging and Presence Protocol (XMPP) may implement a distributed MAPE-K schema in order to support the implementation of the self-adaptation capability in CPSs. We present a basic example where failures on Things are simulated in order to test the self-adaptation capability.
{"title":"Towards self-adaptation for cyber-physical systems using a distributed MAPE-K schema over XMPP","authors":"Romina Torres, Marcelo Aros, J. Calderón","doi":"10.1109/CHILECON.2017.8229533","DOIUrl":"https://doi.org/10.1109/CHILECON.2017.8229533","url":null,"abstract":"Cyber-Physical Systems (CPSs) may fail during runtime on supporting decision making if they are not capable of detecting and correcting their own failures. Thus, it has been proposed that CPSs should be self-aware, context-aware and goal-aware. In this paper we present preliminary results about how an architecture built over the Extensible Messaging and Presence Protocol (XMPP) may implement a distributed MAPE-K schema in order to support the implementation of the self-adaptation capability in CPSs. We present a basic example where failures on Things are simulated in order to test the self-adaptation capability.","PeriodicalId":415811,"journal":{"name":"2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122982816","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 : 2017-12-19DOI: 10.1109/CHILECON.2017.8229621
J. M. Palma, L. Carvalho, T. E. Rosa, C. F. Morais, R. Oliveira
Consider the problem of H2 filtering of a linear system in a networked control system scenario. More precisely, the communication between the system and the filter is accomplished through a multi-hop network where packet loss, modeled by a Markov chain with a Bernoulli distribution, may occur. The purpose of this paper is to investigate the trade-off between the network resource saving and the performance degradation, analyzing in particular: i) the influence of the initial probability distribution on the design of the filter; ii) the relation of the mean square error of estimation with the probability of successful transmissions, the adopted transport scheme or the number of maximum allowable transmissions per data packet. Additionally, a comparison between H2 and H∞ filtering is also performed. The results are obtained for a particular case study based on a Furuta's inverted pendulum.
{"title":"H2 filtering through multi-hop networks: Trade-off analysis between the network consumption and performance degradation","authors":"J. M. Palma, L. Carvalho, T. E. Rosa, C. F. Morais, R. Oliveira","doi":"10.1109/CHILECON.2017.8229621","DOIUrl":"https://doi.org/10.1109/CHILECON.2017.8229621","url":null,"abstract":"Consider the problem of H2 filtering of a linear system in a networked control system scenario. More precisely, the communication between the system and the filter is accomplished through a multi-hop network where packet loss, modeled by a Markov chain with a Bernoulli distribution, may occur. The purpose of this paper is to investigate the trade-off between the network resource saving and the performance degradation, analyzing in particular: i) the influence of the initial probability distribution on the design of the filter; ii) the relation of the mean square error of estimation with the probability of successful transmissions, the adopted transport scheme or the number of maximum allowable transmissions per data packet. Additionally, a comparison between H2 and H∞ filtering is also performed. The results are obtained for a particular case study based on a Furuta's inverted pendulum.","PeriodicalId":415811,"journal":{"name":"2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131726725","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 : 2017-10-20DOI: 10.1109/CHILECON.2017.8229699
M. Rivera, Z. Di, J. Zhang, P. Wheeler
In this paper an indirect model predictive current control strategy is proposed. The proposed method simplifies the computational cost while avoiding the use of weighting factors. Weighting factors are an issue for model predictive control in a direct matrix converter due to the large number of available switching states and necessity to control both input and output sides of the converter.
{"title":"Indirect predictive control strategy with mitigation of input filter resonances for a direct matrix converter","authors":"M. Rivera, Z. Di, J. Zhang, P. Wheeler","doi":"10.1109/CHILECON.2017.8229699","DOIUrl":"https://doi.org/10.1109/CHILECON.2017.8229699","url":null,"abstract":"In this paper an indirect model predictive current control strategy is proposed. The proposed method simplifies the computational cost while avoiding the use of weighting factors. Weighting factors are an issue for model predictive control in a direct matrix converter due to the large number of available switching states and necessity to control both input and output sides of the converter.","PeriodicalId":415811,"journal":{"name":"2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122732484","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 : 2017-10-19DOI: 10.1109/CHILECON.2017.8229616
E. Pruna, Edison R. Sásig, Santiago D. Mullo
This paper presents a lambda tuner tool for the analysis and the design proportional-integral-derivative (PID) controllers using Matlab/Simulink software. The proposed application allows the user to easily obtain control parameters with lambda method and several traditional tuning methods. The lambda method guarantees robustness, stability and non-oscillatory response. It should be noted that the traditional tuning methods can't deal with such problem. The tuning methods use the plant model described by a first order system with delay. Also, step response and simulation of the control system designed are shown. Finally, the validation of the platform developed is tested with several simulations and an experimental test in a flow process using a Compact Logix PLC. The experimental results show that the proposed tool has a high performance.
{"title":"PI and PID controller tuning tool based on the lambda method","authors":"E. Pruna, Edison R. Sásig, Santiago D. Mullo","doi":"10.1109/CHILECON.2017.8229616","DOIUrl":"https://doi.org/10.1109/CHILECON.2017.8229616","url":null,"abstract":"This paper presents a lambda tuner tool for the analysis and the design proportional-integral-derivative (PID) controllers using Matlab/Simulink software. The proposed application allows the user to easily obtain control parameters with lambda method and several traditional tuning methods. The lambda method guarantees robustness, stability and non-oscillatory response. It should be noted that the traditional tuning methods can't deal with such problem. The tuning methods use the plant model described by a first order system with delay. Also, step response and simulation of the control system designed are shown. Finally, the validation of the platform developed is tested with several simulations and an experimental test in a flow process using a Compact Logix PLC. The experimental results show that the proposed tool has a high performance.","PeriodicalId":415811,"journal":{"name":"2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125305632","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 : 2017-10-01DOI: 10.1109/CHILECON.2017.8229582
David Zabala-Blanco, G. Campuzano, César A. Azurdia-Meza
A major drawback of orthogonal frequency division multiplexing (OFDM) is the frequency offset sensitivity. It mainly leads to inter-carrier interference, which can effectively be reduced by employing the pulse shaping filter method. In this manuscript, we present and then optimize the improved double-jump 1 (IDJ1) pulse for digital video broadcasting over cable 2 OFDM systems. Our function is finally compared with various Nyquist-I pulses found in the literature in terms of the bit error rate. IDJ1 filter outperforms the rest of filters since its frequency profile has not only a no-narrow main-lobe but also negligible side-lobes.
{"title":"Mitigated ICI in DVB-C2-OFDM systems utilizing the optimal improved double jump 1 filter","authors":"David Zabala-Blanco, G. Campuzano, César A. Azurdia-Meza","doi":"10.1109/CHILECON.2017.8229582","DOIUrl":"https://doi.org/10.1109/CHILECON.2017.8229582","url":null,"abstract":"A major drawback of orthogonal frequency division multiplexing (OFDM) is the frequency offset sensitivity. It mainly leads to inter-carrier interference, which can effectively be reduced by employing the pulse shaping filter method. In this manuscript, we present and then optimize the improved double-jump 1 (IDJ1) pulse for digital video broadcasting over cable 2 OFDM systems. Our function is finally compared with various Nyquist-I pulses found in the literature in terms of the bit error rate. IDJ1 filter outperforms the rest of filters since its frequency profile has not only a no-narrow main-lobe but also negligible side-lobes.","PeriodicalId":415811,"journal":{"name":"2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)","volume":"206 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123058151","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 : 2017-10-01DOI: 10.1109/CHILECON.2017.8229601
Nicolás Alberto López Vilos, Claudio Valencia Cordero
The interference attack or better known as jamming attacks are very easy to implement affecting the service of any wireless communication system given the vulnerability of data sent to the user. This attack by denying the normal operation of the service detracts from the purpose of these systems. In general, a jamming attack is difficult to detect given the little experimental data provided by the literature. Therefore, the purpose of this work is to present the experimental results obtained from an indoor Wireless Sensor Network in the presence of a constant jamming. The results are based on performance metrics such as Bit Error Rate, Packet Error Rate and Throughput, in order to analyze the behavior of these metrics in the presence of an attack and thus generate ideas to detect and/or combat them.
{"title":"Constant jamming experimental results on indoor wireless sensor network","authors":"Nicolás Alberto López Vilos, Claudio Valencia Cordero","doi":"10.1109/CHILECON.2017.8229601","DOIUrl":"https://doi.org/10.1109/CHILECON.2017.8229601","url":null,"abstract":"The interference attack or better known as jamming attacks are very easy to implement affecting the service of any wireless communication system given the vulnerability of data sent to the user. This attack by denying the normal operation of the service detracts from the purpose of these systems. In general, a jamming attack is difficult to detect given the little experimental data provided by the literature. Therefore, the purpose of this work is to present the experimental results obtained from an indoor Wireless Sensor Network in the presence of a constant jamming. The results are based on performance metrics such as Bit Error Rate, Packet Error Rate and Throughput, in order to analyze the behavior of these metrics in the presence of an attack and thus generate ideas to detect and/or combat them.","PeriodicalId":415811,"journal":{"name":"2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116679469","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 : 2017-10-01DOI: 10.1109/CHILECON.2017.8229679
R. Osorio-Comparán, M. Peña-Cabrera, I. López-Juárez, G. Lefranc, R. Tovar-Medina
The article presents an intelligent traffic light system that allows optimal flow in a car crossing composed of two one-way streets. To achieve this purpose, real-time image processing is used to obtain the counting and space occupied by the vehicles. The algorithms of Backgroud Subtraction and KNN (K-Nearest Neighbor) are used, to determine the congestion vehicular in a street; the libraries of OpenCV are used. The results obtained give a greater ease and response time.
{"title":"Smart semaphore using image processing","authors":"R. Osorio-Comparán, M. Peña-Cabrera, I. López-Juárez, G. Lefranc, R. Tovar-Medina","doi":"10.1109/CHILECON.2017.8229679","DOIUrl":"https://doi.org/10.1109/CHILECON.2017.8229679","url":null,"abstract":"The article presents an intelligent traffic light system that allows optimal flow in a car crossing composed of two one-way streets. To achieve this purpose, real-time image processing is used to obtain the counting and space occupied by the vehicles. The algorithms of Backgroud Subtraction and KNN (K-Nearest Neighbor) are used, to determine the congestion vehicular in a street; the libraries of OpenCV are used. The results obtained give a greater ease and response time.","PeriodicalId":415811,"journal":{"name":"2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)","volume":"120 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117114544","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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