Pub Date : 2013-10-28DOI: 10.1109/ETFA.2013.6647975
Tiago Matias, R. Araújo, C. H. Antunes, D. Gabriel
This paper proposes a learning algorithm for single-hidden layer feedforward neural networks (SLFN) called genetically optimized extreme learning machine (GO-ELM). In the GO-ELM, the structure and the parameters of the SLFN are optimized by a genetic algorithm (GA). The output weights, like in the batch ELM, are obtained by a least squares algorithm, but using Tikhonov's regularization in order to improve the SLFN performance in the presence of noisy data. The GA is used to tune the set of input variables, the hidden-layer configuration and bias, the input weights and the Tikhonov's regularization factor. The proposed method was applied and compared with four other methods over five benchmark problems available in a public repository. Besides it was applied in the estimation of the temperature at the burning zone of a real cement kiln plant.
{"title":"Genetically optimized extreme learning machine","authors":"Tiago Matias, R. Araújo, C. H. Antunes, D. Gabriel","doi":"10.1109/ETFA.2013.6647975","DOIUrl":"https://doi.org/10.1109/ETFA.2013.6647975","url":null,"abstract":"This paper proposes a learning algorithm for single-hidden layer feedforward neural networks (SLFN) called genetically optimized extreme learning machine (GO-ELM). In the GO-ELM, the structure and the parameters of the SLFN are optimized by a genetic algorithm (GA). The output weights, like in the batch ELM, are obtained by a least squares algorithm, but using Tikhonov's regularization in order to improve the SLFN performance in the presence of noisy data. The GA is used to tune the set of input variables, the hidden-layer configuration and bias, the input weights and the Tikhonov's regularization factor. The proposed method was applied and compared with four other methods over five benchmark problems available in a public repository. Besides it was applied in the estimation of the temperature at the burning zone of a real cement kiln plant.","PeriodicalId":106678,"journal":{"name":"2013 IEEE 18th Conference on Emerging Technologies & Factory Automation (ETFA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129440607","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 : 2013-10-28DOI: 10.1109/ETFA.2013.6648165
M. G. Skarpetis, F. Koumboulis
A robust control scheme for an electro hydraulic actuator is presented. A PID (Proportional - Integral - Derivative) controller is designed for controlling the position of the actuator in a wide range of physical uncertainties and external disturbances. The performance of the actuator variables is illustrated via simulations. In the future the present results will be applied to a real experimental system involving a double acting cylinder (Festo - model), with an electro hydraulic servo valve or an ON - OFF hydraulic valve where the PID controller will be realized in MATLAB environment with a Q4 Quanser card.
{"title":"Robust PID controller for electro — Hydraulic actuators","authors":"M. G. Skarpetis, F. Koumboulis","doi":"10.1109/ETFA.2013.6648165","DOIUrl":"https://doi.org/10.1109/ETFA.2013.6648165","url":null,"abstract":"A robust control scheme for an electro hydraulic actuator is presented. A PID (Proportional - Integral - Derivative) controller is designed for controlling the position of the actuator in a wide range of physical uncertainties and external disturbances. The performance of the actuator variables is illustrated via simulations. In the future the present results will be applied to a real experimental system involving a double acting cylinder (Festo - model), with an electro hydraulic servo valve or an ON - OFF hydraulic valve where the PID controller will be realized in MATLAB environment with a Q4 Quanser card.","PeriodicalId":106678,"journal":{"name":"2013 IEEE 18th Conference on Emerging Technologies & Factory Automation (ETFA)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130362987","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 : 2013-10-28DOI: 10.1109/ETFA.2013.6648156
M. Oppelt, Oliver Drumm, Benjamin Lutz, Gerrit Wolf
Digital information management is becoming more and more important to increase the plant efficiency over the complete plant life cycle. In future a plant will be described fully electronically. With the help of simulation, this virtual plant can be made to behave realistically. Today, no single tool can handle the multi-domain simulation aspects of a process plant. On the other hand, creating simulation models is expensive. This paper shows an approach on how to automatically create plant simulation models by reusing plant engineering data and couple different simulation tools in a dynamic co-simulation framework. A case study shows the feasibility and efficiency of this simulation approach.
{"title":"Approach for integrated simulation based on plant engineering data","authors":"M. Oppelt, Oliver Drumm, Benjamin Lutz, Gerrit Wolf","doi":"10.1109/ETFA.2013.6648156","DOIUrl":"https://doi.org/10.1109/ETFA.2013.6648156","url":null,"abstract":"Digital information management is becoming more and more important to increase the plant efficiency over the complete plant life cycle. In future a plant will be described fully electronically. With the help of simulation, this virtual plant can be made to behave realistically. Today, no single tool can handle the multi-domain simulation aspects of a process plant. On the other hand, creating simulation models is expensive. This paper shows an approach on how to automatically create plant simulation models by reusing plant engineering data and couple different simulation tools in a dynamic co-simulation framework. A case study shows the feasibility and efficiency of this simulation approach.","PeriodicalId":106678,"journal":{"name":"2013 IEEE 18th Conference on Emerging Technologies & Factory Automation (ETFA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129196532","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 : 2013-10-28DOI: 10.1109/ETFA.2013.6648091
S. Cavalieri, F. Chiacchio, A. Puglisi
Generally, interoperability in all the levels of a communication architecture (field, unit, plant and management level) is a feature that cannot be easily satisfied because equipments are based on different technologies and communication protocols. OPC Unified Architecture (OPC UA) can provide a cohesive, secure and reliable cross platform framework for interoperability, as shown by current literature. This paper deals with the integration of KNX information model with OPC UA.
{"title":"A novel approach for KNX and OPC UA integration","authors":"S. Cavalieri, F. Chiacchio, A. Puglisi","doi":"10.1109/ETFA.2013.6648091","DOIUrl":"https://doi.org/10.1109/ETFA.2013.6648091","url":null,"abstract":"Generally, interoperability in all the levels of a communication architecture (field, unit, plant and management level) is a feature that cannot be easily satisfied because equipments are based on different technologies and communication protocols. OPC Unified Architecture (OPC UA) can provide a cohesive, secure and reliable cross platform framework for interoperability, as shown by current literature. This paper deals with the integration of KNX information model with OPC UA.","PeriodicalId":106678,"journal":{"name":"2013 IEEE 18th Conference on Emerging Technologies & Factory Automation (ETFA)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123662849","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 : 2013-10-28DOI: 10.1109/ETFA.2013.6648087
Luís Marques, V. Vasconcelos, P. Pedreiras, L. Almeida
Distributed Embedded Systems are subject to transient communication faults that need being detected and mitigated in safety-critical scopes. This paper addresses error recovery in time-triggered systems based on the Controller Area Network (CAN). It extends a recent work that proposed using online traffic scheduling, combined with servers, to implement dynamic message retransmissions. In particular, we provide a schedulability analysis that considers the interference of the error-recovery server in the time-triggered traffic, as well as a methodology to compute the worst-case response time of messages affected by errors. We also present a comparison with related error-recovery methods that confirms the superiority of the proposed method.
{"title":"Schedulability analysis of server-based error-recovery mechanisms for time-triggered systems","authors":"Luís Marques, V. Vasconcelos, P. Pedreiras, L. Almeida","doi":"10.1109/ETFA.2013.6648087","DOIUrl":"https://doi.org/10.1109/ETFA.2013.6648087","url":null,"abstract":"Distributed Embedded Systems are subject to transient communication faults that need being detected and mitigated in safety-critical scopes. This paper addresses error recovery in time-triggered systems based on the Controller Area Network (CAN). It extends a recent work that proposed using online traffic scheduling, combined with servers, to implement dynamic message retransmissions. In particular, we provide a schedulability analysis that considers the interference of the error-recovery server in the time-triggered traffic, as well as a methodology to compute the worst-case response time of messages affected by errors. We also present a comparison with related error-recovery methods that confirms the superiority of the proposed method.","PeriodicalId":106678,"journal":{"name":"2013 IEEE 18th Conference on Emerging Technologies & Factory Automation (ETFA)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114775527","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 : 2013-10-28DOI: 10.1109/ETFA.2013.6647960
Sara Hafeez, S. S. H. Zaidi, Ayesha Siddiqui
Fault diagnosis is vital for any type of machine employed in the industry for its superior operation. For this purpose condition monitoring of machinery is necessary to diagnose the different kind of faults in the machines for the smooth operation. In this research work, we have brought into consideration broken rotor bar losses and have analyzed them with various signal processing techniques through an online process and we analyze the diagnosis and severity of various faults using the details of these signal processing techniques. We are using the variants of WVD (Wigner-Ville Distribution) and then doing a comparison with STFT to demonstrate how these variants are more accurate in analyzing the rotor bar faults.
{"title":"Broken rotor bar detection of single phase induction motor using Wigner-Ville Distributions","authors":"Sara Hafeez, S. S. H. Zaidi, Ayesha Siddiqui","doi":"10.1109/ETFA.2013.6647960","DOIUrl":"https://doi.org/10.1109/ETFA.2013.6647960","url":null,"abstract":"Fault diagnosis is vital for any type of machine employed in the industry for its superior operation. For this purpose condition monitoring of machinery is necessary to diagnose the different kind of faults in the machines for the smooth operation. In this research work, we have brought into consideration broken rotor bar losses and have analyzed them with various signal processing techniques through an online process and we analyze the diagnosis and severity of various faults using the details of these signal processing techniques. We are using the variants of WVD (Wigner-Ville Distribution) and then doing a comparison with STFT to demonstrate how these variants are more accurate in analyzing the rotor bar faults.","PeriodicalId":106678,"journal":{"name":"2013 IEEE 18th Conference on Emerging Technologies & Factory Automation (ETFA)","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114780791","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 : 2013-10-28DOI: 10.1109/ETFA.2013.6648044
Lisa Ollinger, D. Zühlke, Alfred Theorin, C. Johnsson
Innovative engineering methods are needed to enhance the adaptability and agility of industrial control procedures and concurrently manage their rising complexity. Service-oriented Architecture (SOA) constitutes a promising paradigm to meet these challenges. To apply the rather abstract SOA principles to industrial automation, a model-driven engineering method is presented in this paper. Therefore, a reference architecture is introduced providing a framework to structure and define services for control tasks in a convenient way. The application of the engineering method is supported by an implementation concept. It uses SysML during the design phase and the process modeling and control language Grafchart for the execution of service-oriented control procedures.
{"title":"A reference architecture for service-oriented control procedures and its implementation with SysML and Grafchart","authors":"Lisa Ollinger, D. Zühlke, Alfred Theorin, C. Johnsson","doi":"10.1109/ETFA.2013.6648044","DOIUrl":"https://doi.org/10.1109/ETFA.2013.6648044","url":null,"abstract":"Innovative engineering methods are needed to enhance the adaptability and agility of industrial control procedures and concurrently manage their rising complexity. Service-oriented Architecture (SOA) constitutes a promising paradigm to meet these challenges. To apply the rather abstract SOA principles to industrial automation, a model-driven engineering method is presented in this paper. Therefore, a reference architecture is introduced providing a framework to structure and define services for control tasks in a convenient way. The application of the engineering method is supported by an implementation concept. It uses SysML during the design phase and the process modeling and control language Grafchart for the execution of service-oriented control procedures.","PeriodicalId":106678,"journal":{"name":"2013 IEEE 18th Conference on Emerging Technologies & Factory Automation (ETFA)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114834798","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 : 2013-10-28DOI: 10.1109/ETFA.2013.6648033
Carlos Rodríguez, A. Montano, R. Suárez
The paper deals with the problem of planning movements of a two-hand system, considering the possibility of using one hand to remove potential obstacles in order to grasp a desired object with the other hand. The approach is based on a Probabilistic Road Map that does not rule out samples implying collisions with removable objects but instead classify them according to the collided obstacle(s), and allows the search of free paths with the indication of which objects must be removed from the workspace to make the path be actually valid. The approach has been implemented and different tests were performed with considering a real two-hand robotic system with one hand in charge of grasping a desired object and the other in charge of removing the potential obstacles. Some running examples both in simulation and a real workcell are presented in the paper using simulations and real experimentations.
{"title":"Manipulation tasks with a dual arm system including obstacles removing","authors":"Carlos Rodríguez, A. Montano, R. Suárez","doi":"10.1109/ETFA.2013.6648033","DOIUrl":"https://doi.org/10.1109/ETFA.2013.6648033","url":null,"abstract":"The paper deals with the problem of planning movements of a two-hand system, considering the possibility of using one hand to remove potential obstacles in order to grasp a desired object with the other hand. The approach is based on a Probabilistic Road Map that does not rule out samples implying collisions with removable objects but instead classify them according to the collided obstacle(s), and allows the search of free paths with the indication of which objects must be removed from the workspace to make the path be actually valid. The approach has been implemented and different tests were performed with considering a real two-hand robotic system with one hand in charge of grasping a desired object and the other in charge of removing the potential obstacles. Some running examples both in simulation and a real workcell are presented in the paper using simulations and real experimentations.","PeriodicalId":106678,"journal":{"name":"2013 IEEE 18th Conference on Emerging Technologies & Factory Automation (ETFA)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124161939","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 : 2013-10-28DOI: 10.1109/ETFA.2013.6647964
A. Mahmood, R. Exel
The clock servo is an essential constituent of distributed clock synchronization systems and a determining factor for the synchronization performance. This paper focuses on the clock servo design for better accuracy and precision in software-based clock synchronization over WLAN. The behaviour of the clock servo is analysed in this work and errors arising from software timestamps and the oscillator are evaluated. These errors are then used to investigate the operating conditions of the servo loop which results in the least synchronization offset and jitter. Results are obtained through simulations and then verified experimentally by a prototypical implementation. The results indicate that the synchronization performance is optimal when the servo relies more on the oscillator and less on the software timestamps.
{"title":"Servo design for improved performance in software timestamping-assisted WLAN synchronization using IEEE 1588","authors":"A. Mahmood, R. Exel","doi":"10.1109/ETFA.2013.6647964","DOIUrl":"https://doi.org/10.1109/ETFA.2013.6647964","url":null,"abstract":"The clock servo is an essential constituent of distributed clock synchronization systems and a determining factor for the synchronization performance. This paper focuses on the clock servo design for better accuracy and precision in software-based clock synchronization over WLAN. The behaviour of the clock servo is analysed in this work and errors arising from software timestamps and the oscillator are evaluated. These errors are then used to investigate the operating conditions of the servo loop which results in the least synchronization offset and jitter. Results are obtained through simulations and then verified experimentally by a prototypical implementation. The results indicate that the synchronization performance is optimal when the servo relies more on the oscillator and less on the software timestamps.","PeriodicalId":106678,"journal":{"name":"2013 IEEE 18th Conference on Emerging Technologies & Factory Automation (ETFA)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125733785","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 : 2013-10-28DOI: 10.1109/ETFA.2013.6648148
Björn Böttcher, Johann Badinger, N. Moriz, O. Niggemann
Today's production plants are not conceivable without automation systems. Due to the increasing complexity of production plants and therefore of automation systems, delays and interruptions in automation projects are observed. A design model for more efficient planning of industrial automation systems is introduced. It is based on a new and practical proceeding for the construction of a requirements model. Extended feature models as formal requirements representation enable to verify the consistency of requirements. New insights on the necessary capabilities of a formal reasoning system for planning the whole automation system are deduced from the design model.
{"title":"Design of industrial automation systems — Formal requirements in the engineering process","authors":"Björn Böttcher, Johann Badinger, N. Moriz, O. Niggemann","doi":"10.1109/ETFA.2013.6648148","DOIUrl":"https://doi.org/10.1109/ETFA.2013.6648148","url":null,"abstract":"Today's production plants are not conceivable without automation systems. Due to the increasing complexity of production plants and therefore of automation systems, delays and interruptions in automation projects are observed. A design model for more efficient planning of industrial automation systems is introduced. It is based on a new and practical proceeding for the construction of a requirements model. Extended feature models as formal requirements representation enable to verify the consistency of requirements. New insights on the necessary capabilities of a formal reasoning system for planning the whole automation system are deduced from the design model.","PeriodicalId":106678,"journal":{"name":"2013 IEEE 18th Conference on Emerging Technologies & Factory Automation (ETFA)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127949664","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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