Pub Date : 2000-12-04DOI: 10.1109/ISIE.2000.930518
A. Fratta, P. Guglielmi, G. Pellegrino, F. Villata
A novel DC-AC conversion strategy is presented, which is proposing outstanding performances in DC-supplied AC motor drives. Theoretical power system design analyses and wide experimental verifications suggested the adoption of regulated H-bridge boost DC-DC converter stage improving overall cost and efficiency with respect to direct PWM VSI connection to variable voltage battery supply. In this work, the modulation and control strategies are investigated, suitable for the best exploitation of the power system capabilities. Through a controlled coordination between H-bridge and VSI modulation patterns and control tasks, minimum PWM ripple contents and linear voltage transfer up to six-step operation are the targets. The resulting strategy, called cross-over voltage modulation, is reported for the first time together with the requested 3-/spl Phi/ PWM enhancement called balanced envelopes modulation. CVM strategy is realized and experimental tests are reported showing very satisfactory results, achieving new automotive AC motor drive quality.
{"title":"DC-AC conversion strategy optimized for battery or fuel-cell-supplied AC motor drives","authors":"A. Fratta, P. Guglielmi, G. Pellegrino, F. Villata","doi":"10.1109/ISIE.2000.930518","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930518","url":null,"abstract":"A novel DC-AC conversion strategy is presented, which is proposing outstanding performances in DC-supplied AC motor drives. Theoretical power system design analyses and wide experimental verifications suggested the adoption of regulated H-bridge boost DC-DC converter stage improving overall cost and efficiency with respect to direct PWM VSI connection to variable voltage battery supply. In this work, the modulation and control strategies are investigated, suitable for the best exploitation of the power system capabilities. Through a controlled coordination between H-bridge and VSI modulation patterns and control tasks, minimum PWM ripple contents and linear voltage transfer up to six-step operation are the targets. The resulting strategy, called cross-over voltage modulation, is reported for the first time together with the requested 3-/spl Phi/ PWM enhancement called balanced envelopes modulation. CVM strategy is realized and experimental tests are reported showing very satisfactory results, achieving new automotive AC motor drive quality.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131496773","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930341
J. Espinoza, G. Joós, M. Perez, L. Moran T.
Commercial active-front-rectifiers based upon three-phase voltage source topologies are capable of both supplying or absorbing reactive power from the electrical distribution system while serving as high DC power supplies. This is an important feature in industrial facilities where high power factor operation is of concern. This paper shows that the available range of reactive power in such topologies depends upon the actual active power being supplied by the topology to the load. Moreover, both the voltage and current source based topologies have limited and variable maximum reactive power compensation capabilities. In fact, both topologies are capable of providing maximum reactive power compensation when supplying 0.707 pu active power when operating passive loads in the rectifier mode. Extended analysis shows that during regeneration both topologies are also capable of supplying or absorbing limited amounts of reactive power from the electrical distribution system. Simulated and experimental results confirm the theoretical considerations.
{"title":"Operating region in active-front-end voltage/current source rectifiers","authors":"J. Espinoza, G. Joós, M. Perez, L. Moran T.","doi":"10.1109/ISIE.2000.930341","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930341","url":null,"abstract":"Commercial active-front-rectifiers based upon three-phase voltage source topologies are capable of both supplying or absorbing reactive power from the electrical distribution system while serving as high DC power supplies. This is an important feature in industrial facilities where high power factor operation is of concern. This paper shows that the available range of reactive power in such topologies depends upon the actual active power being supplied by the topology to the load. Moreover, both the voltage and current source based topologies have limited and variable maximum reactive power compensation capabilities. In fact, both topologies are capable of providing maximum reactive power compensation when supplying 0.707 pu active power when operating passive loads in the rectifier mode. Extended analysis shows that during regeneration both topologies are also capable of supplying or absorbing limited amounts of reactive power from the electrical distribution system. Simulated and experimental results confirm the theoretical considerations.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131225252","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930491
A. Nava-Segura, J. Linares-Flores, G. Mino-Aguilar
This paper presents the theoretical fundamentals and the digital simulation of a three-phase power active filter, whose control strategy is strictly vector-based. This vector control strategy determines first the region, within the inverter voltage vector hexagon, where the compensation current deviation instantaneous space vector /spl Delta/i/sub c/ is located. Afterwards the vector control computes the required inverter output voltage vector, e/sub 0/, that makes this current deviation equal to zero. Under the knowledge of these vector regions, a set of inverter switching commutation tables are created to produce the best switching action. The vector nature of this control makes unnecessary the "conventional" use of the three current hysteresis controllers of the variable switching frequency for the compensating inverter output currents. Therefore, the inverter switching frequency produced by this vector-based-control is inherently constant both for steady and transient states.
{"title":"Vector active filter without current hysteresis controllers","authors":"A. Nava-Segura, J. Linares-Flores, G. Mino-Aguilar","doi":"10.1109/ISIE.2000.930491","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930491","url":null,"abstract":"This paper presents the theoretical fundamentals and the digital simulation of a three-phase power active filter, whose control strategy is strictly vector-based. This vector control strategy determines first the region, within the inverter voltage vector hexagon, where the compensation current deviation instantaneous space vector /spl Delta/i/sub c/ is located. Afterwards the vector control computes the required inverter output voltage vector, e/sub 0/, that makes this current deviation equal to zero. Under the knowledge of these vector regions, a set of inverter switching commutation tables are created to produce the best switching action. The vector nature of this control makes unnecessary the \"conventional\" use of the three current hysteresis controllers of the variable switching frequency for the compensating inverter output currents. Therefore, the inverter switching frequency produced by this vector-based-control is inherently constant both for steady and transient states.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133867908","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930476
D. Buhler, W. Kuchlin
This paper introduces CANINSIGHT which was developed to create a device and platform independent fieldbus management system for highly distributed enterprises. System data are represented as XML documents which are instances of the CANopen Markup Language (CoML). CoML is an XML application for Controller Area Network (CAN) device profiles, setup information, and process data. The system uses a CoML-based Java client/server architecture to access arbitrary CANopen fieldbus devices via the Internet. The CANINSIGHT client, realized as a Java applet, provides convenient, interactive access to CANopen automation systems at remote locations. The CoML documents which are used for the client/server communication can also be exported to remote database systems and form a central process information repository for an entire manufacturing enterprise. It is possible to use standard database clients to request specific CoML information which can be processed either by dedicated CoML tools or a wide variety of general purpose XML tools.
{"title":"Remote fieldbus system management with Java and XML","authors":"D. Buhler, W. Kuchlin","doi":"10.1109/ISIE.2000.930476","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930476","url":null,"abstract":"This paper introduces CANINSIGHT which was developed to create a device and platform independent fieldbus management system for highly distributed enterprises. System data are represented as XML documents which are instances of the CANopen Markup Language (CoML). CoML is an XML application for Controller Area Network (CAN) device profiles, setup information, and process data. The system uses a CoML-based Java client/server architecture to access arbitrary CANopen fieldbus devices via the Internet. The CANINSIGHT client, realized as a Java applet, provides convenient, interactive access to CANopen automation systems at remote locations. The CoML documents which are used for the client/server communication can also be exported to remote database systems and form a central process information repository for an entire manufacturing enterprise. It is possible to use standard database clients to request specific CoML information which can be processed either by dedicated CoML tools or a wide variety of general purpose XML tools.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134015374","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930367
G. F. Santillan-Quinonez, D. Iparraguirre-Cardenas
The presented architecture allows to configure the discrete 1-D wavelet transform (DWT) computing (number of samples and number of octaves) from the outside and verifies if the given configuration is a right option before beginning the transform process. The reached configuration is not missed when the process is finished and can be used again for another data sequence without the need of a reset. This is useful for expanding this architecture towards the 2-D DWT. The architecture has been compiled on the Max+Plus II environment for FLEX 10K devices with different types of synthesis. It was described using AHDL (Altera Hardware Description Language) in a parameterized format, which facilitates the implementation of the same architecture with different characteristics.
{"title":"Flexible and configurable integer 1-D discrete wavelet transform architecture in FPGAs using digit-serial technique","authors":"G. F. Santillan-Quinonez, D. Iparraguirre-Cardenas","doi":"10.1109/ISIE.2000.930367","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930367","url":null,"abstract":"The presented architecture allows to configure the discrete 1-D wavelet transform (DWT) computing (number of samples and number of octaves) from the outside and verifies if the given configuration is a right option before beginning the transform process. The reached configuration is not missed when the process is finished and can be used again for another data sequence without the need of a reset. This is useful for expanding this architecture towards the 2-D DWT. The architecture has been compiled on the Max+Plus II environment for FLEX 10K devices with different types of synthesis. It was described using AHDL (Altera Hardware Description Language) in a parameterized format, which facilitates the implementation of the same architecture with different characteristics.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"440 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133516570","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930323
C. Serporta, G. Tinè, G. Vitale, M. C. Di Piazza
The purpose of this paper is the study of PWM inverter-fed induction motor behaviour in terms of high frequency electromagnetic conducted emissions. The development of a suitable model of the complete system, a power drive system (PDS), for prediction of high frequency conducted electromagnetic interference (EMI) and leakage currents, is also presented. The proposed model accounts for the presence of a parasitic components system, whose contribution to propagation of conducted disturbance is relevant. Experimental results of high frequency electromagnetic conducted emission measurements on a PDS are reported. The comparison of the experimental results with the ones obtained by simulation of the complete system, according to the proposed model, shows a good agreement.
{"title":"Conducted EMI in power converters feeding AC motors: experimental investigation and modelling","authors":"C. Serporta, G. Tinè, G. Vitale, M. C. Di Piazza","doi":"10.1109/ISIE.2000.930323","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930323","url":null,"abstract":"The purpose of this paper is the study of PWM inverter-fed induction motor behaviour in terms of high frequency electromagnetic conducted emissions. The development of a suitable model of the complete system, a power drive system (PDS), for prediction of high frequency conducted electromagnetic interference (EMI) and leakage currents, is also presented. The proposed model accounts for the presence of a parasitic components system, whose contribution to propagation of conducted disturbance is relevant. Experimental results of high frequency electromagnetic conducted emission measurements on a PDS are reported. The comparison of the experimental results with the ones obtained by simulation of the complete system, according to the proposed model, shows a good agreement.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116820361","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930362
Ž. Hocenski, A. Baumgartner
The image processing applied on the original tile image and the replica images in serial production is used for visual quality control. The image of a tile that contains no visual quality error represents the original image. The images of the tiles from the production line that could contain some of the visual quality errors represent the replicas. The image processing is based on the image matrix decomposition method. The matrix form of the original image is transformed to a vector. The images made by the variations of a good original image are transformed to the matrix made by such vectors. Using the SVD of the matrix of variations of the original image makes the image comparison duration shorter. The number of computer operations decreases by using SVD approximation by a lower rank matrix. The SVD calculation of the matrix is done just once so that the image processing time is shorter. Too low a rank of the matrix could yield bad comparison results. The development and testing of this method are used for an early design of the computer aided visual control.
{"title":"Image comparison method for visual quality control based on matrix decomposition","authors":"Ž. Hocenski, A. Baumgartner","doi":"10.1109/ISIE.2000.930362","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930362","url":null,"abstract":"The image processing applied on the original tile image and the replica images in serial production is used for visual quality control. The image of a tile that contains no visual quality error represents the original image. The images of the tiles from the production line that could contain some of the visual quality errors represent the replicas. The image processing is based on the image matrix decomposition method. The matrix form of the original image is transformed to a vector. The images made by the variations of a good original image are transformed to the matrix made by such vectors. Using the SVD of the matrix of variations of the original image makes the image comparison duration shorter. The number of computer operations decreases by using SVD approximation by a lower rank matrix. The SVD calculation of the matrix is done just once so that the image processing time is shorter. Too low a rank of the matrix could yield bad comparison results. The development and testing of this method are used for an early design of the computer aided visual control.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133787984","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930321
K. Matsui, I. Yamamoto
For small capacity rectifier circuits with a small capacity, such as those for consumer electronics and appliances, capacitor input type rectifier circuits are generally used. Consequently, various harmonics generated within the power system become a serious problem. Various studies of this effect have been presented previously. However, most of these employ switching devices, such as FETs and the like. The absence of switching devices makes systems more tolerant to over-load, and brings low radio noise benefits. We propose a power factor correction scheme using a voltage doubler rectifier without switching devices. In this method, the input current is divided into two periods, where one period charges the small input capacitor and the other charges the large output capacitor. By dividing the input current into two different modes, the current conduction period can be widened and harmonics can largely be cancelled between the two modes. Hence, the harmonic characteristics can be significantly improved, whereby the lower order harmonics, such as the fifth and seventh orders, are much reduced. The results are confirmed by theory and experiment.
{"title":"Power factor correction using voltage doubler rectifier without switching device","authors":"K. Matsui, I. Yamamoto","doi":"10.1109/ISIE.2000.930321","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930321","url":null,"abstract":"For small capacity rectifier circuits with a small capacity, such as those for consumer electronics and appliances, capacitor input type rectifier circuits are generally used. Consequently, various harmonics generated within the power system become a serious problem. Various studies of this effect have been presented previously. However, most of these employ switching devices, such as FETs and the like. The absence of switching devices makes systems more tolerant to over-load, and brings low radio noise benefits. We propose a power factor correction scheme using a voltage doubler rectifier without switching devices. In this method, the input current is divided into two periods, where one period charges the small input capacitor and the other charges the large output capacitor. By dividing the input current into two different modes, the current conduction period can be widened and harmonics can largely be cancelled between the two modes. Hence, the harmonic characteristics can be significantly improved, whereby the lower order harmonics, such as the fifth and seventh orders, are much reduced. The results are confirmed by theory and experiment.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133274070","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930484
Suk-Am Yoon, Hark-Su Jeoung, Yeong-Sun Yoon, I. Cha
In this paper, we present the method that improves the alarm security system using electronic circuits added to the emergency lamp by our proposed algorithms. In the conventional method, the emergency of warning lamp and alarm system did not work perfectly because of batteries with short life. For improving this problem we, using peripheral interface controller IC (PIC), designed the circuit added to the emergency lamp for a warning and alarm system for preventing the electric current from stopping, and compared our proposed method with the conventional method. By designing the circuit to stop over-charge we can extend the life of the battery, use it for stopping of electric current in an emergency according to the tightness around it.
{"title":"The study on the characteristic of charge and discharge of security alarm system battery with PIC","authors":"Suk-Am Yoon, Hark-Su Jeoung, Yeong-Sun Yoon, I. Cha","doi":"10.1109/ISIE.2000.930484","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930484","url":null,"abstract":"In this paper, we present the method that improves the alarm security system using electronic circuits added to the emergency lamp by our proposed algorithms. In the conventional method, the emergency of warning lamp and alarm system did not work perfectly because of batteries with short life. For improving this problem we, using peripheral interface controller IC (PIC), designed the circuit added to the emergency lamp for a warning and alarm system for preventing the electric current from stopping, and compared our proposed method with the conventional method. By designing the circuit to stop over-charge we can extend the life of the battery, use it for stopping of electric current in an emergency according to the tightness around it.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"430 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132453145","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930480
A. Di Stefano, C. Santoro
This paper describes the JDPC-Java Devices for Process Control-a research project of the University of Catania which aims to introduce Java technology in the field of distributed process control. This is a starting point in enhancing the software compatibility and inter-operability of devices of different vendors. To this aim, a general purpose micro-controlled field device architecture is proposed, called the Java microcontrolled device (JMD). It is composed, at the hardware level, of a micro-controller embedding suitable digital and analog I/O lines and a high-speed serial interface. The software level is made of a Java kernel, running upon a native micro-kernel, which provides the application with high-level hardware-independent primitives, including the communication protocol stack and a task scheduler. The JMD embeds a restricted JVM where some features, useless for embedded systems, are removed. In addition, it offers an application programming model based on the definition of a set of tasks which have to be executed each with its period and within its deadline. This is an extension of the classic cyclic or periodic scan model of a PLC program, and allows the programmer to define different parameters for each task to be executed.
{"title":"Java devices for distributed process control","authors":"A. Di Stefano, C. Santoro","doi":"10.1109/ISIE.2000.930480","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930480","url":null,"abstract":"This paper describes the JDPC-Java Devices for Process Control-a research project of the University of Catania which aims to introduce Java technology in the field of distributed process control. This is a starting point in enhancing the software compatibility and inter-operability of devices of different vendors. To this aim, a general purpose micro-controlled field device architecture is proposed, called the Java microcontrolled device (JMD). It is composed, at the hardware level, of a micro-controller embedding suitable digital and analog I/O lines and a high-speed serial interface. The software level is made of a Java kernel, running upon a native micro-kernel, which provides the application with high-level hardware-independent primitives, including the communication protocol stack and a task scheduler. The JMD embeds a restricted JVM where some features, useless for embedded systems, are removed. In addition, it offers an application programming model based on the definition of a set of tasks which have to be executed each with its period and within its deadline. This is an extension of the classic cyclic or periodic scan model of a PLC program, and allows the programmer to define different parameters for each task to be executed.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124918228","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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