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Detección de fallas distribuidas para sistemas ciberfísicos con aplicación al sistema de red de energía
IEEE transactions on cybernetics
|August 28, 2025
Resumen
Este estudio introduce un método de detección de fallas distribuido para sistemas ciberfísicos (CPS) utilizando un filtro distribuido de Kalman (DKF). El enfoque permite una detección robusta de fallas en los subsistemas con comunicación de vecindad local.
Área de la Ciencia:
- Sistemas cibernéticos y físicos
- Ingeniería de sistemas de control
- Procesamiento de señales distribuido
Sus antecedentes:
- Los sistemas ciberfísicos (CPS) son complejos y comprenden numerosos subsistemas interconectados.
- La detección precisa de fallos es crucial para el funcionamiento confiable del CPS.
- Los métodos tradicionales de detección de fallos centralizados se enfrentan a desafíos de escalabilidad y comunicación en CPS a gran escala.
Objetivo del estudio:
- Desarrollar un esquema de detección de fallas distribuido para una clase de CPS.
- Mejorar la robustez y la precisión de la detección de fallas en los subsistemas individuales.
- Asegurar que la detección de fallas funcione sin depender del intercambio global de información.
Principales métodos:
- Estimación del estado para cada subsistema utilizando un filtro de Kalman distribuido (DKF), incorporando información de los vecinos.
- Diseño de generadores residuales locales que aprovechen el DKF para cada subsistema.
- Ajuste de parámetros del DKF para minimizar el error de estimación y los límites de covarianza para la robustez residual.
- Utilización de estadísticas de ensayo T2 instantáneas y de ventana corredera para la evaluación residual y el ajuste de umbrales.
Principales resultados:
- Esquema de detección de fallas distribuido en el que cada subsistema se comunica únicamente con sus vecinos.
- Robustez demostrada de las señales residuales a través de parámetros DKF optimizados.
- Umbral de detección de fallas establecido basado en las estadísticas de ensayo T2.
- Se proporciona una condición que garantiza el límite cuadrado medio del error de estimación en escenarios libres de fallas.
Conclusiones:
- El sistema de detección de fallos distribuido propuesto permite efectivamente la detección de fallos locales en los subsistemas de CPS.
- El método garantiza la robustez y la fiabilidad al minimizar los errores de estimación y utilizar la información de los vecinos.
- La naturaleza distribuida del esquema mejora la escalabilidad y reduce los gastos generales de comunicación en CPS complejos.
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