Control de Tracción para un Vehículo Eléctrico basado en Observadores no Lineales
Enviado: 10-10-2017
|Aceptado: 10-10-2017
|Publicado: 05-12-2017
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Palabras clave:
Control de tracción, Condición de suelo, Coeficiente de rozamiento, Modelo de neumático brush, Linealización exacta por realimentación, Observador no lineal de Luenberger
Agencias de apoyo:
Universidad Nacional de Río Cuarto
FONCyT-ANPCyT (Subsidio PICT-2014-2760)
CONICET (Subsidio PIP 2014-2016 GI 11220130100517CO)
Resumen:
En este trabajo se propone una estrategia de control de tracción para un vehículo eléctrico de cuatro ruedas, basada en observadores no lineales que permiten estimar la fuerza máxima que se puede transferir al suelo. El conocimiento de la fuerza máxima permite realizar un control del deslizamiento de los neumáticos de tracción, evitando que las ruedas patinen aún en superficies de baja adherencia. La estrategia propuesta permite además evitar que se produzca un momento de guiño no deseado en el vehículo cuando las condiciones de suelo a cada lado del mismo son diferentes. Con ello se logra mejorar la eficiencia y el control del vehículo, evitando posibles pérdidas de estabilidad que pueden resultar en riesgos para sus ocupantes. Tanto el observador como el control propuestos son diseñados en base a un modelo dinámico rotacional de la rueda y un modelo de fuerzas de brush. Se presentan resultados de simulación obtenidos empleando un modelo completo de vehículo sobre la plataforma Simulink/CarSim
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