{"title":"An eigenvalues analysis with entropy-per-chroma feature","authors":"A. Manzo-Martinez, A. Camarena-Ibarrola","doi":"10.1109/ROPEC.2013.6702744","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702744","url":null,"abstract":"A variety of audio features have been proposed for describing the music in the last decades. These features are used in various ways, for instance as inputs to different music information retrieval systems. Most, if not all, aim for capturing the essential perceptive characteristics of the audio-signal that are not present in its temporal representation. In this work we analyze entropy-per-chroma feature on a basis of eigenvalues decomposition. This feature has been successfully applied on audio-fingerprinting-based audio recognition systems. We show that involving eigenvalues decomposition contributes for an even more robust audio feature which may be used in audio matching task. In the experiments we used a set of performances of polyphonic music. We equated two versions of a same performance in order to prove that both performances yield almost the same set of features despite being performance by another musician and/or different instruments.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126630710","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}
Rolando Bautista-Montesano, Victor de la Cueva-Hernandez
{"title":"Multiple-Robot motion planning in an unknown and uncertain environment","authors":"Rolando Bautista-Montesano, Victor de la Cueva-Hernandez","doi":"10.1109/ROPEC.2013.6702730","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702730","url":null,"abstract":"When a Robot finds itself in an unknown and uncertain environment it needs to retrieve information from its surroundings so it can perform a task in the appropriate way. A task may demand far much more capabilities than the ones a robot can perform by itself, a Multiple-Robot System can accomplish lots of tasks, however, working with them implies more uncertainty while executing actions. The desired task in this case is to move a huge object from an initial position to a final one. There are two main solutions to this problem, the first one is to employ a big and expensive robot that is capable of moving the object. The second choice is to employ a Multiple-Robot System composed by several low-cost robots. The second one was chosen because of its economic advantages, although it needs a more complex way of communication between the agents. This paper presents a novel form of deploying a coupled Multiple-Robot System based in a Master-Slave configuration in an Unknown and Uncertain Environment, where initially only the goal is known, no a priori environment information is given. This way, the Multiple-Robot System will need to retrieve data from its sensors so it can spot itself and build a map while moving through the space so Classic Path Planning techniques can be used. The employed algorithms were Approximate Cell Decomposition, A star, Kalman Filter and Particle Filter; they all run in MATLAB 2012a. The used robots were Parallax Boe-Bots.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125215071","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}
C. Burgara-Motero, J. Anzurez-Marín, F. Ornelas‐Tellez
{"title":"Super-twisting control algorithm for an Antilock Braking System","authors":"C. Burgara-Motero, J. Anzurez-Marín, F. Ornelas‐Tellez","doi":"10.1109/ROPEC.2013.6702747","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702747","url":null,"abstract":"This paper proposes a robust control scheme for the Antilock Braking System (ABS). The controller is based on the Super-Twisting (ST) control algorithm, this is a high-order sliding mode controller. The ABS is nonlinear and uncertain system; therefore, a robust control method needs to be employed. The ST control algorithm is developed and applied for a quarter vehicle model via simulations. The simulation results reveal that the controller is fast in convergence and it has an adequate performance.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126472463","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}
Sergio Eduardo Perez-Perez, Sheila Esmeralda González-Reyna, S. Ledesma-Orozco, J. Aviña-Cervantes
{"title":"Principal component analysis for speed limit Traffic Sign Recognition","authors":"Sergio Eduardo Perez-Perez, Sheila Esmeralda González-Reyna, S. Ledesma-Orozco, J. Aviña-Cervantes","doi":"10.1109/ROPEC.2013.6702716","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702716","url":null,"abstract":"Traffic Sign Recognition has recently become a popular research field. The main applications include Autonomous Driving Systems, Driver Assistance Systems, road sign inventory, to name a few. In this paper, a speed limit traffic sign recognition system is proposed based on Principal Component Analysis (PCA) with preprocessing steps, that help on perspective and extreme luminance variation correction. The classification is performed by a feed-forward neural network, or Multi-Layer Perceptron (MLP). Experimental results present a classification accuracy similar to some state of the art systems, but with a more compact scheme.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133487666","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}
J. M. Sosa, P. Martinez‐Rodriguez, G. Vázquez, J. C. Nava-Cruz
{"title":"Control design of a cascade boost converter based on the averaged model","authors":"J. M. Sosa, P. Martinez‐Rodriguez, G. Vázquez, J. C. Nava-Cruz","doi":"10.1109/ROPEC.2013.6702718","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702718","url":null,"abstract":"Cascade DC-DC power converters have as main advantage the large output-input voltage relation they provide. This advantage makes them ideal in applications such as the conversion of energy generated by means of non conventional sources. The boost converter dynamics is nonlinear and its linearization yields a non-minimum phase system, therefore a controller design must include the injection of damping to assure the asymptotic stability of the closed-loop system. In this paper is presented the design of an output feedback controller for the cascade boost of two stages, which is based on the dynamics of the averaged model of the power converter. The objective of the controller is the regulation of the output voltage to a desired reference, irrespective of the presence of load changes. The proposed controller makes use of only a subset of the state of the system, that is the output voltage and the input current. This paper also presents numerical simulation results which show the performance of the closed-loop system.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122373379","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}
{"title":"Modeling ANNs performance on time series forecasting","authors":"R. R. Suárez, Mario Graff","doi":"10.1109/ROPEC.2013.6702736","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702736","url":null,"abstract":"Artificial Neural Networks (ANNs) are accurate models that can learn the characteristics of the problem being solved, mainly these are used for classification and regression problems. In this work, the performance of ANNs used in Time Series forecasting is modeled. Modeling the performance of ANNs is specially useful when the algorithm selection problem is being tackled. In order to model different ANNs, only changes in the training parameters are being considered. The influence of the training parameters on the performance is also determined in order to assure that different ANNs are being modeled.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124849361","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}
G. Vázquez, P. Martinez‐Rodriguez, J. M. Sosa, J. Renteria-Soto, C. A. Limones-Pozos
{"title":"Comparative analysis of single-phase grid connected transformerless photovoltaic inverter topologies","authors":"G. Vázquez, P. Martinez‐Rodriguez, J. M. Sosa, J. Renteria-Soto, C. A. Limones-Pozos","doi":"10.1109/ROPEC.2013.6702723","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702723","url":null,"abstract":"Transformerless inverters have change the way to connect a photovoltaic (PV) system to the electrical grid, due to their excellent performance in the energy conversion process. Nowadays, there are many different topologies for this kind of systems, that most have three main characteristics; high efficiency, constant common mode voltage and small size. Moreover, the control implementation must be simple and the cost should be low. Due to the wide variety of topologies, in this paper, a comparative analysis of efficiency in the case of three main single-phase topologies for transformerless grid connection is performed. The analysis is focus in the common mode currents and in the efficiency. The efficiency analysis includes an analysis of power losses distribution in the semiconductors which provide information to perform a good thermal design of the converter.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115570480","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}
{"title":"Space-spectrum empirical model for unmasking modal components contained into space-time varying data measurements","authors":"P. Esquivel, C. Castañeda","doi":"10.1109/ROPEC.2013.6702708","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702708","url":null,"abstract":"This paper describes a space-spectrum empirical model for unmasking modal components contained into space-time varying data measurements obtained from interconnected dynamical systems using an empirical biorthogonal representation. The method incorporates frequency domain responses obtained from the application of the complex Fourier analysis to problems of spectral decomposition for space-time varying data sets. In addition, the model provides a frequency band based denoising procedure to effectively reduce the noise level in the data used. This is achieved by extending the empirical orthogonal function analysis of time series to the frequency domain where their fundamental properties are based on the interpretation of pre-selected frequencies contained into the eigenvectors of a cross-spectrum matrix. Without loss of generality, the method is applied to a synthetic example of a spring-mass mechanical system to demonstrate the performance of the decomposition method incorporating frequency domain responses where the details of its practical implementation are described.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130929821","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}
P. R. Martínez, G. Vázquez, J. M. Sosa, J. F. Martinez, A. Valdez Fernandez
{"title":"Model-based controller for current injection with a single phase NPC inverter","authors":"P. R. Martínez, G. Vázquez, J. M. Sosa, J. F. Martinez, A. Valdez Fernandez","doi":"10.1109/ROPEC.2013.6702726","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702726","url":null,"abstract":"This paper presents the modeling and controller design for a neutral point clamped multilevel converter (NPC) which is used to inject power into the grid. The current injection to the grid is motivated by two main goals. One of them consists in using the inverter to provide power to the network; in this case the energy is taken from an external source and is supplied to the mains. On the other hand, the inverter can also be used for the harmonic compensation of currents caused by nonlinear loads. The proposed controller is designed to inject a sinusoidal current into the grid using an external DC voltage source. And also the converter in the presence of a nonlinear load in a common connection point behaves as an active power filter to compensate harmonic distortion in the current. The selected topology is connected to the mains through an L filter. In order to assess the performance of the proposed controller, simulation results are presented for an NPC converter connected on a common connection point with a nonlinear load.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122687151","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}
C. Ceja-Espinosa, A. Ramos-Paz, E. Espinosa-Juárez
{"title":"Parallelization of the Fault Positions Method for stocastic assessment of voltage sags","authors":"C. Ceja-Espinosa, A. Ramos-Paz, E. Espinosa-Juárez","doi":"10.1109/ROPEC.2013.6702750","DOIUrl":"https://doi.org/10.1109/ROPEC.2013.6702750","url":null,"abstract":"In this paper, the parallelization of the Fault Positions Method for the stochastic assessment of voltage sags is presented. Using the GNU/Linux operating system, an algorithm was written in C programming language which exploits multi-thread programming by including functions defined by the POSIX threads header and library, in order to perform parallel calculations. A comparative analysis of the parallelized Fault Positions Method with respect to the traditional method is presented by analyzing a small 5-bus test system and the IEEE 118-bus test system. Results of case studies demonstrate the proper operation of the parallelized Fault Positions Method and the reduction in required computational time.","PeriodicalId":307120,"journal":{"name":"2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126391966","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}