Sistema de control de posición mediante rechazo activo de perturbaciones para sistemas ópticos láser
DOI:
https://doi.org/10.4995/riai.2021.14852Palabras clave:
Sistema de estabilización de haz láser, Control por Rechazo Activo a Perturbaciones, Observador Lineal de Estado Extendido, Estabilidad Entrada a Estado (ISS)Resumen
En este trabajo se presenta de manera pragmática un esquema de control por rechazo activo a perturbaciones para un sistema de direccionamiento y estabilización de haz láser. Primeramente es diseñado un Observador Lineal de Estado Extendido, el cual permite estimar las perturbaciones externas e incertidumbres en el modelo, así como la velocidad de desplazamiento transversal del haz. Posteriormente, se propone una ley de control, la cual contiene términos de retroalimentación y precompensación, permitiendo realizar tareas de regulación y seguimiento. Mediante un análisis de estabilidad en el sentido entrada a estado, se muestra que el sistema en lazo cerrado, planta-observador-controlador, es robustamente estable, cuando la entrada es la perturbación total y el estado es el error de posición del haz. Dicho análisis presenta nuevas perspectivas en una técnica ahora madura. Los resultados experimentales muestran el funcionamiento del esquema de control y mediante la norma L2 y la Integral del Error Cuadrático se mide el desempeño en lazo cerrado, el cual es comparado con tres controles generalmente usados en este tipo de sistemas: PID, control por retroalimentación de estados con observador y regulador lineal cuadrático gaussiano.Descargas
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