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Samuel Lensgraf

7 accepted papers

2024

Scalable underwater assembly with reconfigurable visual fiducials

ICRA 2024poster

We present a scalable combined localization infrastructure deployment and task planning algorithm for underwater assembly. Infrastructure is autonomously modified to suit the needs of manipulation tasks based on an uncertainty model on the infrastructure’s positional accuracy. Our uncertainty model…

Cited by 2SourceScholar
2023

Buoyancy enabled autonomous underwater construction with cement blocks

ICRA 2023poster

We present the first free-floating autonomous underwater construction system capable of using active bal-lasting to transport cement building blocks efficiently. It is the first free-floating autonomous construction robot to use a paired set of resources: compressed air for buoyancy and a battery fo…

Cited by 6SourceScholar
2020

PuzzleFlex: kinematic motion of chains with loose joints

ICRA 2020poster

This paper presents a method of computing free motions of a planar assembly of rigid bodies connected by loose joints. Joints are modeled using local distance constraints, which are then linearized with respect to configuration space velocities, yielding a linear programming formulation that allows…

Cited by 9SourcecodeScholar
2020

Toward Optimal FDM Toolpath Planning with Monte Carlo Tree Search

ICRA 2020poster

The most widely used methods for toolpath planning in 3D printing slice the input model into successive 2D layers to construct the toolpath. Unfortunately the methods can incur a substantial amount of wasted motion (i.e., the extruder is moving while not printing). In recent years we have introduced…

Cited by 24SourceScholar