Pub Date : 1999-10-18DOI: 10.1109/ETFA.1999.813108
J. Ferreira, J. D. Oliveira
Evaluates the possibility of using the formalism of statecharts, with hybrid features, as a graphical support to describe the dynamic behaviour of complex systems in Modelica. Implementation issues, according to the statecharts semantics, are discussed and the advantages of using an equation based language, to implement the state transitions and nested states, are pointed out. Two levels of statecharts implementation are considered: statecharts library models and components models. Statecharts library models are responsible for capturing events related to the firing of transitions and to the activation and deactivation of states that must be performed when transitions are taken. At the component model level, the statechart is composed by instantiating the basic models provided by the statecharts library.
{"title":"Modelling hybrid systems using statecharts and Modelica","authors":"J. Ferreira, J. D. Oliveira","doi":"10.1109/ETFA.1999.813108","DOIUrl":"https://doi.org/10.1109/ETFA.1999.813108","url":null,"abstract":"Evaluates the possibility of using the formalism of statecharts, with hybrid features, as a graphical support to describe the dynamic behaviour of complex systems in Modelica. Implementation issues, according to the statecharts semantics, are discussed and the advantages of using an equation based language, to implement the state transitions and nested states, are pointed out. Two levels of statecharts implementation are considered: statecharts library models and components models. Statecharts library models are responsible for capturing events related to the firing of transitions and to the activation and deactivation of states that must be performed when transitions are taken. At the component model level, the statechart is composed by instantiating the basic models provided by the statecharts library.","PeriodicalId":119106,"journal":{"name":"1999 7th IEEE International Conference on Emerging Technologies and Factory Automation. Proceedings ETFA '99 (Cat. No.99TH8467)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122519325","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 : 1999-10-18DOI: 10.1109/ETFA.1999.813116
V. Patel, H. Elmaraghy, I. Ben-Abdallah
Presents a scheduling approach, based on genetic algorithms (GA), developed to address the scheduling problem in manufacturing systems constrained by both machines and workers. The GA algorithm utilizes a new chromosome representation, which takes into account machine and worker assignments to jobs. A study was conducted, using the proposed scheduling method to compare the performance of six dispatching rules with respect to eight performance measures for two different shop characteristics: i) dual-resources (machines and workers) constrained shop, and ii) single-resource constrained shop (machines only). An example is used for illustration. The results indicate that the dispatching rule which works best for a single-resource constrained shop is not necessarily the best rule for a dual-resources constrained system. Furthermore, it is shown that the most suitable dispatching rule depends on the selected performance criteria and the characteristics of the manufacturing system.
{"title":"Scheduling in dual-resources constrained manufacturing systems using genetic algorithms","authors":"V. Patel, H. Elmaraghy, I. Ben-Abdallah","doi":"10.1109/ETFA.1999.813116","DOIUrl":"https://doi.org/10.1109/ETFA.1999.813116","url":null,"abstract":"Presents a scheduling approach, based on genetic algorithms (GA), developed to address the scheduling problem in manufacturing systems constrained by both machines and workers. The GA algorithm utilizes a new chromosome representation, which takes into account machine and worker assignments to jobs. A study was conducted, using the proposed scheduling method to compare the performance of six dispatching rules with respect to eight performance measures for two different shop characteristics: i) dual-resources (machines and workers) constrained shop, and ii) single-resource constrained shop (machines only). An example is used for illustration. The results indicate that the dispatching rule which works best for a single-resource constrained shop is not necessarily the best rule for a dual-resources constrained system. Furthermore, it is shown that the most suitable dispatching rule depends on the selected performance criteria and the characteristics of the manufacturing system.","PeriodicalId":119106,"journal":{"name":"1999 7th IEEE International Conference on Emerging Technologies and Factory Automation. Proceedings ETFA '99 (Cat. No.99TH8467)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131865036","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 : 1999-10-18DOI: 10.1109/ETFA.1999.813114
J. Hennet
A cyclic economic lot-sizing and scheduling problem (CELSP) is formulated to solve a multistage production planning problem in a job-shop. The cyclic nature of the problem is related to the a priori assumption of constant demand rates for all the end-products. Under the common cycle approach, each generic job consists of producing an associated end-product in the quantity required to meet the demand over the common cycle horizon. The paper shows that the CESLP can be solved in a decomposed way and that its solution can easily be implemented and adjusted to limited variations of demands.
{"title":"A decomposed resolution technique for the cyclic economic lot-sizing and scheduling problem","authors":"J. Hennet","doi":"10.1109/ETFA.1999.813114","DOIUrl":"https://doi.org/10.1109/ETFA.1999.813114","url":null,"abstract":"A cyclic economic lot-sizing and scheduling problem (CELSP) is formulated to solve a multistage production planning problem in a job-shop. The cyclic nature of the problem is related to the a priori assumption of constant demand rates for all the end-products. Under the common cycle approach, each generic job consists of producing an associated end-product in the quantity required to meet the demand over the common cycle horizon. The paper shows that the CESLP can be solved in a decomposed way and that its solution can easily be implemented and adjusted to limited variations of demands.","PeriodicalId":119106,"journal":{"name":"1999 7th IEEE International Conference on Emerging Technologies and Factory Automation. Proceedings ETFA '99 (Cat. No.99TH8467)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130502993","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 : 1999-10-18DOI: 10.1109/ETFA.1999.815427
P. Piesik, J. Weglarz
The design and planning of a flexible manufacturing system (FMS) is in general a multicriteria decision making problem. We use simulation tools and multicriteria decision support methods to solve it. The idea of our approach is to use the simulation program as a solving module for an interactive decision support system.
{"title":"Multicriteria decision support for flexible manufacturing systems using an interactive method","authors":"P. Piesik, J. Weglarz","doi":"10.1109/ETFA.1999.815427","DOIUrl":"https://doi.org/10.1109/ETFA.1999.815427","url":null,"abstract":"The design and planning of a flexible manufacturing system (FMS) is in general a multicriteria decision making problem. We use simulation tools and multicriteria decision support methods to solve it. The idea of our approach is to use the simulation program as a solving module for an interactive decision support system.","PeriodicalId":119106,"journal":{"name":"1999 7th IEEE International Conference on Emerging Technologies and Factory Automation. Proceedings ETFA '99 (Cat. No.99TH8467)","volume":"6 33","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120930197","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 : 1999-10-18DOI: 10.1109/ETFA.1999.813100
T. Escobet, J. Quevedo, S. Tornil, L. Travé-Massuyès
This paper presents the use of dynamic models in a real time supervisory system for fault detection in gas turbines. The analytical redundancy, given by quantitative and qualitative models of different gas turbine subsystems, is implemented in a specific software Ca/spl sim/En, which is very useful to represent hard to measure and ill-known dynamic systems, such as the case of gas turbines.
{"title":"Integration of dynamic models in gas turbine supervision control","authors":"T. Escobet, J. Quevedo, S. Tornil, L. Travé-Massuyès","doi":"10.1109/ETFA.1999.813100","DOIUrl":"https://doi.org/10.1109/ETFA.1999.813100","url":null,"abstract":"This paper presents the use of dynamic models in a real time supervisory system for fault detection in gas turbines. The analytical redundancy, given by quantitative and qualitative models of different gas turbine subsystems, is implemented in a specific software Ca/spl sim/En, which is very useful to represent hard to measure and ill-known dynamic systems, such as the case of gas turbines.","PeriodicalId":119106,"journal":{"name":"1999 7th IEEE International Conference on Emerging Technologies and Factory Automation. Proceedings ETFA '99 (Cat. No.99TH8467)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134113612","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 : 1999-10-18DOI: 10.1109/ETFA.1999.813092
G. Sánchez, S. Felici, J. Pelechano, J. Pelegrí, J.J. Perez
Irrigation installations consist of a water distribution network and a computer system to control it. In the design of water distribution network several requirements have to be met. The problem of designing the irrigation network has been solved using different heuristic methods which do not assure that the network design is optimum. This paper describes a genetic algorithm for designing an optimal network of an irrigation system. The algorithm determines the optimal network for an irrigation area in terms of the economical cost.
{"title":"Optimal design of irrigation networks using a genetic algorithm","authors":"G. Sánchez, S. Felici, J. Pelechano, J. Pelegrí, J.J. Perez","doi":"10.1109/ETFA.1999.813092","DOIUrl":"https://doi.org/10.1109/ETFA.1999.813092","url":null,"abstract":"Irrigation installations consist of a water distribution network and a computer system to control it. In the design of water distribution network several requirements have to be met. The problem of designing the irrigation network has been solved using different heuristic methods which do not assure that the network design is optimum. This paper describes a genetic algorithm for designing an optimal network of an irrigation system. The algorithm determines the optimal network for an irrigation area in terms of the economical cost.","PeriodicalId":119106,"journal":{"name":"1999 7th IEEE International Conference on Emerging Technologies and Factory Automation. Proceedings ETFA '99 (Cat. No.99TH8467)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129468527","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 : 1999-10-18DOI: 10.1109/ETFA.1999.815388
X. Yajima, T. Tanaka, Y. Taniguchi, R. Itsuki
In electronic community, it is sometimes difficult to find suitable information sources and services in a short time enough for real use, because the quality of information on the Internet is not unified and the quantity of information is enormous. In this paper, we discuss issues of communications in electronic community, specially asymmetrical communication between experts with rich information and experience and customers with non-rich information. Moreover, we propose an effective communication method that combines synchronous communication and synchronous communication to perform N:M communication.
{"title":"Interactive consultation system with asymmetrical communication between customers and suppliers in different electronic communities","authors":"X. Yajima, T. Tanaka, Y. Taniguchi, R. Itsuki","doi":"10.1109/ETFA.1999.815388","DOIUrl":"https://doi.org/10.1109/ETFA.1999.815388","url":null,"abstract":"In electronic community, it is sometimes difficult to find suitable information sources and services in a short time enough for real use, because the quality of information on the Internet is not unified and the quantity of information is enormous. In this paper, we discuss issues of communications in electronic community, specially asymmetrical communication between experts with rich information and experience and customers with non-rich information. Moreover, we propose an effective communication method that combines synchronous communication and synchronous communication to perform N:M communication.","PeriodicalId":119106,"journal":{"name":"1999 7th IEEE International Conference on Emerging Technologies and Factory Automation. Proceedings ETFA '99 (Cat. No.99TH8467)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130283641","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 : 1999-10-18DOI: 10.1109/ETFA.1999.815372
Josep Casanovas, W. Pérez, J. Montero, P. Fonseca
Presents the development of a detailed simulation model of some main processes in a pharmaceutical products plant involved in deep structural changes due to the merge of different new company activities. Implementing an object oriented simulation methodology called LeanSim, specially designed to create models for manufacturing and logistics systems, a wide set of new software technology tools have been included to create, validate and evaluate different simulation scenarios.
{"title":"Simulation of reception, expedition and picking areas of a pharmaceutical products plant","authors":"Josep Casanovas, W. Pérez, J. Montero, P. Fonseca","doi":"10.1109/ETFA.1999.815372","DOIUrl":"https://doi.org/10.1109/ETFA.1999.815372","url":null,"abstract":"Presents the development of a detailed simulation model of some main processes in a pharmaceutical products plant involved in deep structural changes due to the merge of different new company activities. Implementing an object oriented simulation methodology called LeanSim, specially designed to create models for manufacturing and logistics systems, a wide set of new software technology tools have been included to create, validate and evaluate different simulation scenarios.","PeriodicalId":119106,"journal":{"name":"1999 7th IEEE International Conference on Emerging Technologies and Factory Automation. Proceedings ETFA '99 (Cat. No.99TH8467)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132695654","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 : 1999-10-18DOI: 10.1109/ETFA.1999.815426
Haw-Ching Yang, F. Cheng, D. Huang
The purpose of this research is to develop the generic equipment manager (GEMG) which can either operate alone or be integrated with the manufacturing execution system (MES). In order to achieve generality and reusability, the governing rules of the GEMG are divided into three independent portions: system/framework rules, business rules, and equipment rules. The system/framework rules specify the requirements to become a pluggable component of MES framework. The business rules are company-dependent and are equipment-independent. A controller application module, which drives desired scenarios, is developed to realize the business rules. The equipment rules are equipment-dependent and are company-independent. These equipment rules are achieved by the module of equipment driver which compiles appropriate behaviors. Considering reusability, the so-called generic equipment interface (GEI) messages which are fine-grained, company-independent and equipment-independent are developed to be the communication messages between the controller application and equipment driver, therefore reusability is easily accomplished. Several examples are shown to demonstrate the generality and reusability of the GEMG.
{"title":"Development of a generic equipment manager for semiconductor manufacturing","authors":"Haw-Ching Yang, F. Cheng, D. Huang","doi":"10.1109/ETFA.1999.815426","DOIUrl":"https://doi.org/10.1109/ETFA.1999.815426","url":null,"abstract":"The purpose of this research is to develop the generic equipment manager (GEMG) which can either operate alone or be integrated with the manufacturing execution system (MES). In order to achieve generality and reusability, the governing rules of the GEMG are divided into three independent portions: system/framework rules, business rules, and equipment rules. The system/framework rules specify the requirements to become a pluggable component of MES framework. The business rules are company-dependent and are equipment-independent. A controller application module, which drives desired scenarios, is developed to realize the business rules. The equipment rules are equipment-dependent and are company-independent. These equipment rules are achieved by the module of equipment driver which compiles appropriate behaviors. Considering reusability, the so-called generic equipment interface (GEI) messages which are fine-grained, company-independent and equipment-independent are developed to be the communication messages between the controller application and equipment driver, therefore reusability is easily accomplished. Several examples are shown to demonstrate the generality and reusability of the GEMG.","PeriodicalId":119106,"journal":{"name":"1999 7th IEEE International Conference on Emerging Technologies and Factory Automation. Proceedings ETFA '99 (Cat. No.99TH8467)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115163262","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 : 1999-10-18DOI: 10.1109/ETFA.1999.813138
K. Takahashi, K. Hasegawa, P. E. Miyagi
The authors propose the Mark Flow Graph (MFG) for theoretical systematization of sequential control. The MFG is derived from the Petri net and is suitable for designing and analyzing sequential control systems. We apply the MFG to practical examples. We explain how to use the MFG in hierarchical programming of the systems and show its effectiveness. The MFG can be easily translated to the SFC for programming PCs.
{"title":"Hierarchical programming of sequential control systems by mark flow graph","authors":"K. Takahashi, K. Hasegawa, P. E. Miyagi","doi":"10.1109/ETFA.1999.813138","DOIUrl":"https://doi.org/10.1109/ETFA.1999.813138","url":null,"abstract":"The authors propose the Mark Flow Graph (MFG) for theoretical systematization of sequential control. The MFG is derived from the Petri net and is suitable for designing and analyzing sequential control systems. We apply the MFG to practical examples. We explain how to use the MFG in hierarchical programming of the systems and show its effectiveness. The MFG can be easily translated to the SFC for programming PCs.","PeriodicalId":119106,"journal":{"name":"1999 7th IEEE International Conference on Emerging Technologies and Factory Automation. Proceedings ETFA '99 (Cat. No.99TH8467)","volume":"16 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131922308","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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