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Resumen
En este trabajo se pretende introducir un tema que últimamente está cobrando un fuerte impulso entre investigadores y usuarios de sistemas de control. Desde los trabajos seminales de Halevi y Ray (1988a,b), el interés por este tipo de sistemas que conjugan las redes teleinformáticas con esquemas de control ha ido creciendo hasta el extremo de que ya es rara la ausencia de trabajos en este ámbito en un gran número de revistas o en los Congresos más importantes, que además suelen contar con sesiones específicas de este tema concreto.
La orientación de este trabajo es la de hacer una amplia introducción del tema, de tal manera que en el ámbito profesional de la Automática se pueda tener una primera toma de contacto, encontrando aquellas referencias más importantes que permitan profundizar en el planteamiento del control en tiempo real de este tipo de instalaciones.
Se ha establecido un conjunto de propuestas de solución desde el punto de vista de la Automática, pero es preciso aclarar que no es el único aunque sí el menos estudiado. Hay alternativas asentadas desde el punto de vista de sistemas teleinformáticos gestionando de forma óptima recursos y/o planificando tareas lo que da lugar a protocolos específicos que mejoran la calidad de servicio y el funcionamiento de este tipo de esquemas. Además se aprovecha la ocasión para apuntar algunas de las soluciones específicas que los autores han considerado ante diferentes alternativas de tratamiento de distintos aspectos de este tipo de sistemas.
De esta forma se apunta a técnicas de control digital con muestreo no-convencional dentro de las que se puede encontrar los sistemas periódicos y multifrecuenciales, como la base de concepción de una serie de opciones de resolución para el modelado y el diseño de sistemas con estas características.
Palabras Clave:
Sistemas de Control Basados en Red
Multifrecuencia
Comunicaciones
Bus de Campo
Retardos
Control por eventos
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