Control Basado en Eventos de Sistemas de Primer Orden Con Retardo

Ángel Ruiz, Jorge E. Jiménez, José Sánchez, Sebastián Dormido

Resumen

La teoría de control PID en su vertiente discreta, apoyándose en una gestión periódica de los muestreos (eventos planificados en tiempo) se considera un área madura dentro del paradigma del control automático. Por el contrario, la planificación por eventos deriva, casi inevitablemente, en muestreos asíncronos planteando, problemas adicionales que necesitan ser caracterizados y estudiados. Bajo este escenario, aspectos como la sintonía de los controladores y las condiciones para la estabilidad global o la ausencia de ciclos límite siguen siendo temas que todavía están lejos de ser completamente resueltos. Con el trabajo actual se presenta un nuevo esquema de muestreo y control basado en eventos para sistemas de primer orden con retardo para el que se han analizado los aspectos anteriores. El esquema se basa en el Predictor de Smith para la compensación de los retardos, y en el algoritmo de muestreo SSOD (Symmetric Send- On-Delta) para la generación de los eventos. En base a este esquema, se desarrolla el análisis de estabilidad y se propone una metodología de sintonía con una interpretación intuitiva y eficaz.

Palabras clave

Sistemas por eventos; Control PID; Sintonía; Sistemas de primer orden

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Referencias

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