Cinemática Diferencial de un Manipulador Paralelo Plano 3RRR-(RRR)v con Actuación Virtual Indirecta
Resumen
En este artículo, se presenta un enfoque nuevo para obtener el modelo de la cinemática diferencial, matriz jacobiana: por un lado, el modelo de un manipulador paralelo delta plano de configuración 3RRR-(RRR)v y por el otro, el modelo de su cadena virtual serial (RRR)v. Ambos modelos se presentan en variables de estado y en función de las variables articulares de la cadena virtual. El primer modelo facilita el análisis completo de ambos: la cinemática y la controlabilidad del robot delta plano con su cadena virtual. El segundo modelo se utiliza para obtener su cinemática inversa, para, retroalimentar al primero. Esta retroalimentación es llamada “actuación virtual indirecta”. El enfoque propuesto garantiza que cuando el efector final de la cadena virtual serial (RRR)v es controlado alrededor de una trayectoria, el efector final del robot paralelo plano 3RRR también sigue dicha trayectoria; esto se debe a que comparten el mismo punto de análisis. Los resultados muestran que es posible controlar un robot paralelo delta plano 3RRR-(RRR)v a partir de controlar la cadena virtual (RRR)v. El método presentado aquí promete, por lo tanto, ser una herramienta útil para resolver robots complejos, como el caso de los robots manipuladores híbridos.Citas
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