Metodología para el diseño simultáneo de equipo y su sistema de control robusto
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resumen: Los procesos y su sistema de control se diseñan de forma independiente y secuencial. Dicho procedimiento no garantiza que el sistema de control funcione correctamente, y en ocasiones es necesario realizar modificaciones en el proceso mismo. Para evitar este tipo de situaciones se desarrolló la metodología del diseño simultáneo, en el cual se diseñan al mismo tiempo el proceso y su sistema de control, pero aún no existe una metodología consolidada para realizar el diseño simultáneo. Con base en esto, en esta tesis se propone una metodología para realizar el diseño simultáneo, basada en los Métodos de Teoría de Conjuntos en Control. En estos métodos se tiene una forma diferente de entender la controlabilidad de estado del proceso, que es complementaria a la mirada clásica. En la metodología propuesta se incluyen las perturbaciones, inherentes al proceso, en el cálculo de los conjuntos, y con el fin de tener una cuantificación de la controlabilidad de los procesos, se propone un indicador de la controlabilidad basado en los Conjuntos Alcanzable y Reversible. La metodología propuesta se prueba con éxito en dos benchmark diferentes de un Reactor de Tanque Continuamente Agitado (CSTR por sus siglas en inglés), para los cuales se tiene en cuenta, o no, las perturbaciones, y se diseña un sistema de control con el fin de mostrar la mejora en la controlabilidad del proceso al aplicar la metodología.
Abstract: Processes and their control system are designed independently and sequentially. This method does not guarantee that the control system works properly, and sometimes it is necessary to make changes in the process itse lf for the control system to work adequatelly. To avoid such situations a simultaneous design of process and control methodology was developed, in which the process and its control system is designed at the same time, but it does not yet exist a established methodology for simultaneous design. Based on this, in this thesis a methodology for simultaneous design, based on Set Theoretic Methods in Control is proposed. These methods have a different way of understanding process state controllability, which is complementary to the classical look. In the proposed methodology disturbances inherent in the process are included in the calculation of sets, and in order to have a quantification of the controllability process, an indicator based on Reachable and Reversible Sets is proposed. The proposed methodology is successfully tested on two different benchmark of a Continuously Stirred Tank Reactor (CSTR) for which disturbances are or not considered and a control system is designed in order to show the improvement in the process controllability when the methodology herein proposed is applied.
Abstract: Processes and their control system are designed independently and sequentially. This method does not guarantee that the control system works properly, and sometimes it is necessary to make changes in the process itse lf for the control system to work adequatelly. To avoid such situations a simultaneous design of process and control methodology was developed, in which the process and its control system is designed at the same time, but it does not yet exist a established methodology for simultaneous design. Based on this, in this thesis a methodology for simultaneous design, based on Set Theoretic Methods in Control is proposed. These methods have a different way of understanding process state controllability, which is complementary to the classical look. In the proposed methodology disturbances inherent in the process are included in the calculation of sets, and in order to have a quantification of the controllability process, an indicator based on Reachable and Reversible Sets is proposed. The proposed methodology is successfully tested on two different benchmark of a Continuously Stirred Tank Reactor (CSTR) for which disturbances are or not considered and a control system is designed in order to show the improvement in the process controllability when the methodology herein proposed is applied.