全方向性空中ロボットのための配分：パワーダイナミクスの導入
Allocation for Omnidirectional Aerial Robots: Incorporating Power Dynamics
チルトロータ空中ロボットの配分問題に対し、アクチュエータとプロペラの動力学を組み込んだ新しい手法を提案し、実機で動的マヌーバを行い性能を比較した。
著者: Eugenio Cuniato, Mike Allenspach, Thomas Stastny, Helen Oleynikova, Roland Siegwart, Michael Pantic
分類: cs.RO
原文アブストラクト
Tilt-rotor aerial robots are more dynamic and versatile than fixed-rotor platforms, since the thrust vector and body orientation are decoupled. However, the coordination of servos and propellers (the allocation problem) is not trivial, especially accounting for overactuation and actuator dynamics. We incrementally build and present three novel allocation methods for tilt-rotor aerial robots, comparing them to state-of-the-art methods on a real system performing dynamic maneuvers. We extend the state-of-the-art geometric allocation into a differential allocation, which uses the platform's redundancy and does not suffer from singularities. We expand it by incorporating actuator dynamics and propeller power dynamics. These allow us to model dynamic propeller acceleration limits, bringing two main advantages: balancing propeller speed without the need for nullspace goals and allowing the platform to selectively turn off propellers during flight, opening the door to new manipulation possibilities. We also use actuator dynamics and limits to normalize the allocation problem, making it easier to tune and allowing it to track 70% faster trajectories than a geometric allocation.
