Flexible Behavior Trees: In search of the mythical HFSMBTH for Collaborative Autonomy in Robotics

Autor:	Zutell, Joshua M., Conner, David C., Schillinger, Philipp
Rok vydání:	2022
Předmět:	Computer Science - Robotics
Druh dokumentu:	Working Paper
Popis:	In recent years, the model of computation known as Behavior Trees (BT), first developed in the video game industry, has become more popular in the robotics community for defining discrete behavior switching. BTs are threatening to supplant the venerable Hierarchical Finite State Machine (HFSM) model. In this paper we contrast BT and HFSM, pointing out some potential issues with the BT form, and advocate for a hybrid model of computation that uses both BT and HFSM in ways that leverage their individual strengths. The work introduces a new open-source package for ROS 2 that extends the Flexible Behavior Engine (FlexBE) to enable interaction with BT-based behaviors within a HFSM in a way that supports collaborative autonomy. Simulation and hardware demonstrations illustrate the concepts. Comment: Submitted to IROS 22, 7 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2203.05389 Zobrazit plný text záznamu View this record from Arxiv