kinematic trajectory
Incremental Learning for Robot Shared Autonomy
Tao, Yiran, Qiao, Guixiu, Ding, Dan, Erickson, Zackory
Shared autonomy holds promise for improving the usability and accessibility of assistive robotic arms, but current methods often rely on costly expert demonstrations and lack the ability to adapt post-deployment. This paper introduces ILSA, an Incrementally Learned Shared Autonomy framework that continually improves its assistive control policy through repeated user interactions. ILSA leverages synthetic kinematic trajectories for initial pretraining, reducing the need for expert demonstrations, and then incrementally finetunes its policy after each manipulation interaction, with mechanisms to balance new knowledge acquisition with existing knowledge retention during incremental learning. We validate ILSA for complex long-horizon tasks through a comprehensive ablation study and a user study with 20 participants, demonstrating its effectiveness and robustness in both quantitative performance and user-reported qualitative metrics. Code and videos are available at https://ilsa-robo.github.io/.
- North America > United States > Pennsylvania > Allegheny County > Pittsburgh (0.04)
- North America > United States > Maryland > Montgomery County > Gaithersburg (0.04)
- Questionnaire & Opinion Survey (1.00)
- Research Report > New Finding (0.49)
Kinematic Orienteering Problem With Time-Optimal Trajectories for Multirotor UAVs
Meyer, Fabian, Glock, Katharina
In many unmanned aerial vehicle (UAV) applications for surveillance and data collection, it is not possible to reach all requested locations due to the given maximum flight time. Hence, the requested locations must be prioritized and the problem of selecting the most important locations is modeled as an Orienteering Problem (OP). To fully exploit the kinematic properties of the UAV in such scenarios, we combine the OP with the generation of time-optimal trajectories with bounds on velocity and acceleration. We define the resulting problem as the Kinematic Orienteering Problem (KOP) and propose an exact mixed-integer formulation together with a Large Neighborhood Search (LNS) as a heuristic solution method. We demonstrate the effectiveness of our approach based on Orienteering instances from the literature and benchmark against optimal solutions of the Dubins Orienteering Problem (DOP) as the state-of-the-art. Additionally, we show by simulation \color{black} that the resulting solutions can be tracked precisely by a modern MPC-based flight controller. Since we demonstrate that the state-of-the-art in generating time-optimal trajectories in multiple dimensions is not generally correct, we further present an improved analytical method for time-optimal trajectory generation.
- Research Report (0.64)
- Overview (0.46)
- Energy > Oil & Gas (0.51)
- Information Technology > Robotics & Automation (0.48)
- Aerospace & Defense > Aircraft (0.48)
- (2 more...)