Implementación de un control adoptivo con modelo de referencia off-line para la calibración de sensores de vibración basado en la norma ISO 16063-21

Abstract

La calibración de sensores de vibración se realiza con base en la comparación de la dinámica de un sensor patrón y la del sensor que se desea calibrar. Para una correcta calibración se debe evaluar la respuesta de los sensores ante un movimiento oscilatorio sinusoidal para diferentes amplitudes y frecuencias, requiriendo de un hardware especializado. Con el objetivo de hacer un sistema de calibración eficiente se ha diseñado, implementado y validado un control adaptativo con modelo de referencia que modifica los parámetros del controlador, permitiendo autoajustarse ante los cambios que cada sensor bajo calibración imprime sobre la dinámica de la planta.

The project begins with the need of the Vibration laboratory from Pontificia Bolivariana University from Bucaramanga to control the vibration sensor calibration process. The laboratory has specialized equipment and the objective is to achieve an integration through an application in LabView. The goal of a calibration process is to compare the voltage value from two vibration sensors: one sensor who will be calibrated and the second that works as a pattern. One of the biggest difficulties in the calibration of vibration sensors, is the dynamic variation from the system, each sensor implies a change in the plant due its differents weights. Therefore it was implemented a robust control, capable to control the system despite the dynamic variations from the plant. Initially different dynamic models were identified for the plant, the most critical uncertainties were discussed and finally a robust control was designed in Matlab and implemented and tuned in LabView for the desired results.