... Matem`atiques i Inform`atica, Universitat de les Illes Balears, Spain 1manuel.barranco,guille... more ... Matem`atiques i Inform`atica, Universitat de les Illes Balears, Spain 1manuel.barranco,guillermo.rodriguez-navas, david.gessner, julian.proenzal@uib.es Abstract ... [4] J. Ferreira, L. Almeida, A. Fonseca, P. Pedreiras, E. Martins, G. Rodriguez-Navas, J. Rigo, and J. Proenza. ...
EFTA 2003. 2003 IEEE Conference on Emerging Technologies and Factory Automation. Proceedings (Cat. No.03TH8696), 2003
Advances in programmable hardware have simplified integration of communication facilities in low-... more Advances in programmable hardware have simplified integration of communication facilities in low-cost hardware components. This has proved to be beneficial in the design of distributed embedded systems as it allows the communication subsystem to provide important properties at a low level. The present work follows this approach in order to achieve timeliness in CAN networks. This paper describes the implementation
2014 10th IEEE Workshop on Factory Communication Systems (WFCS 2014), 2014
ABSTRACT Traditionally, distributed embedded systems have been designed using static approaches, ... more ABSTRACT Traditionally, distributed embedded systems have been designed using static approaches, i.e., assuming a static environment. However, when the environment is dynamic and imposes changing requirements on the system, flexible approaches are needed. If in addition the system must operate continuously, then high reliability is also required. The necessary flexibility for real-time requirements may be provided by Hard Real-Time Ethernet Switching (HaRTES), which is an implementation of the master/multi-slave Flexible Time Triggered (FTT) communication paradigm. To help provide high reliability, the Flexible Time-Triggered Replicated Star (FTTRS) adds network fault tolerance by duplicating the HaRTES switch and master, as well as the network links. This paper discusses how to enforce replica determinism for the masters in FTTRS by ensuring that they show corresponding outputs both in the time and value domain. Moreover, it suggests how to proceed in case replica determinism is lost despite all efforts.
Proceedings of 2012 IEEE 17th International Conference on Emerging Technologies & Factory Automation (ETFA 2012), 2012
ABSTRACT One of the drawbacks of the Controller Area Network (CAN) that must be overcome to make ... more ABSTRACT One of the drawbacks of the Controller Area Network (CAN) that must be overcome to make it suitable for critical applications is its incapacity for providing a Total Order Broadcast (TOB) communication service. A number of mechanisms were proposed to solve this problem, but each one of them only addresses a specific TOB limitation. Thus, this paper introduces TOBE-CAN, the first solution that comprehensively overcomes all the TOB flaws these previous mechanisms deal with. TOBE-CAN takes advantage of some of these mechanisms and further provides TOB while tolerating faults that are beyond their capabilities.
... Matem`atiques i Inform`atica, Universitat de les Illes Balears, Spain 1manuel.barranco,guille... more ... Matem`atiques i Inform`atica, Universitat de les Illes Balears, Spain 1manuel.barranco,guillermo.rodriguez-navas, david.gessner, julian.proenzal@uib.es Abstract ... [4] J. Ferreira, L. Almeida, A. Fonseca, P. Pedreiras, E. Martins, G. Rodriguez-Navas, J. Rigo, and J. Proenza. ...
EFTA 2003. 2003 IEEE Conference on Emerging Technologies and Factory Automation. Proceedings (Cat. No.03TH8696), 2003
Advances in programmable hardware have simplified integration of communication facilities in low-... more Advances in programmable hardware have simplified integration of communication facilities in low-cost hardware components. This has proved to be beneficial in the design of distributed embedded systems as it allows the communication subsystem to provide important properties at a low level. The present work follows this approach in order to achieve timeliness in CAN networks. This paper describes the implementation
2014 10th IEEE Workshop on Factory Communication Systems (WFCS 2014), 2014
ABSTRACT Traditionally, distributed embedded systems have been designed using static approaches, ... more ABSTRACT Traditionally, distributed embedded systems have been designed using static approaches, i.e., assuming a static environment. However, when the environment is dynamic and imposes changing requirements on the system, flexible approaches are needed. If in addition the system must operate continuously, then high reliability is also required. The necessary flexibility for real-time requirements may be provided by Hard Real-Time Ethernet Switching (HaRTES), which is an implementation of the master/multi-slave Flexible Time Triggered (FTT) communication paradigm. To help provide high reliability, the Flexible Time-Triggered Replicated Star (FTTRS) adds network fault tolerance by duplicating the HaRTES switch and master, as well as the network links. This paper discusses how to enforce replica determinism for the masters in FTTRS by ensuring that they show corresponding outputs both in the time and value domain. Moreover, it suggests how to proceed in case replica determinism is lost despite all efforts.
Proceedings of 2012 IEEE 17th International Conference on Emerging Technologies & Factory Automation (ETFA 2012), 2012
ABSTRACT One of the drawbacks of the Controller Area Network (CAN) that must be overcome to make ... more ABSTRACT One of the drawbacks of the Controller Area Network (CAN) that must be overcome to make it suitable for critical applications is its incapacity for providing a Total Order Broadcast (TOB) communication service. A number of mechanisms were proposed to solve this problem, but each one of them only addresses a specific TOB limitation. Thus, this paper introduces TOBE-CAN, the first solution that comprehensively overcomes all the TOB flaws these previous mechanisms deal with. TOBE-CAN takes advantage of some of these mechanisms and further provides TOB while tolerating faults that are beyond their capabilities.
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Papers by Manuel Barranco