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espanolEste trabajo aborda el problema del control de nivel de un tanque de seccion trapezoidal. Este proceso es un sistema no lineal cuya dinamica varia segun el punto de operacion. Se propone una estructura de control adaptativo a traves de un controlador PI por ganancia programada de facil implementacion. Dicho controlador se ajusta utilizando metodos en el dominio de la frecuencia en varios modelos linealizados del sistema no lineal en torno a diferentes puntos de trabajo. Los resultados en simulacion son contrastados con los experimentales mostrando una buena concordancia y una buena respuesta del sistema. EnglishIn this paper the problem of level control of a tank with trapezoidal section is addressed. The process is a non-linear system whose dynamic varies according to the operation point. An adaptive control structure is proposed based on a gain scheduling PI controller of easy implementation. The aforementioned controller is adjusted using methods in the frequency domain. The controller parameters are adjusted based on linearized models of the non-linear system around different operation points. Simulated and experimental results are compared and found in good agreement with a good system response.

Control PI adaptativo por ganancia programada del nivel de un tanque de sección trapezoidal