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Percorrer por autor "Oliveira, André Schneider de"

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  • Collaboration and self-organization to enable self-healing in industrial cyber-physical systems
    Publication . Piardi, Luís; Leitão, Paulo; Costa, Pedro; Oliveira, André Schneider de
    Fault tolerance (FT) is a critical aspect of industry, where systems are susceptible to disturbance and faults. Traditional FT models, based on the centralization of information to handle fault episodes, no longer meet the current industrial models based on Cyber-physical Systems (CPS). Self-healing is a promising approach for FT in CPS, consisting of the individual competence of each componente in detect, diagnose and recover from failures. With this in mind, this paper discusses the engineering of self-healing fault-tolerance in industrial CPS, analyzing the maturation process of this paradigm from the local model through collaboration models and later to self-organization features. The paper also discusses the main research challenges that self-healing FT faces during this process.
    2024Comunicação em conferência Acesso aberto Ver mais
  • Fault-tolerance in cyber-physical systems using holonic multi-agent systems
    Publication . Piardi, Luis; Leitão, Paulo; Costa, Pedro; Oliveira, André Schneider de
    Cyber-Physical Systems (CPS) transform traditional systems into a network of connected and heterogeneous systems, integrating computational and physical elements, that works as a complex system whose overall properties are greater than the sum of its parts. However, CPS is not free from faulty episodes and their consequences such as malfunctions, breakdowns, and service interruption. Traditional centralized models for fault-tolerance do not meet the complexity of the current industrial scenarios and particularly the industrial CPS requirements. Having this in mind, this work presents a holonic-based architecture to address the fault-tolerance in CPS by distributing the detection, diagnosis, and recovery in the local individual entities and also considers the emergent behaviour resulting from the collaboration of these entities. An experimental case study is used to illustrate the potential application of the fault-tolerant approach
    2022Comunicação em conferência Acesso restrito Ver mais