← Search

Derek Pravecek

5 accepted papers

2026

Empirical Contact Models for Soft Spherical Robots in Drake

ICRA 2026poster

Accurate dynamic modeling of soft-shelled spherical robots is challenging due to coupled rigid–soft body interactions and pressure-dependent contact behavior. This letter presents a modeling strategy for an empirically tuned pendulum-driven inflatable spherical robot. The approach combines a rigid-b…

Cited by 0SourceScholar
2026

Novel Robotic Fleet for Sample Recovery in Lunar Craters: A Concept of Operations (I)

ICRA 2026poster

Exploration of extraterrestrial surfaces, such as the lunar surface, can prove treacherous for humans and robots alike, and requires highly specialized mobility platforms to ensure the success of a mission and the safety of any operators. However, these specialized machines may limit the overall sco…

Cited by 0Scholar
2026

Stability-Aware Banked Turn Maneuver Control and Command Augmentation for 2-DOF Pendulum-Driven Spherical Robots

ICRA 2026poster

Executing banked turns at elevated speeds poses significant dynamic challenges for 2-DOF pendulum-driven spherical robots. A steady-state torque balance reveals that centripetal loading at high speeds limits feasible roll angles and demands increasingly aggressive pendulum actuation. We derive a clo…

Cited by 0Scholar
2025

Empirically Compensated Setpoint Tracking for Spherical Robots With Pressurized Soft-Shells

RA-L 2025

Replacing spherical robots' hard shells with soft, pressurized tires has the potential to improve their off-road practicality immensely. This change leverages spherical robots as a simple and rugged solution to problems currently addressed using wheeled or tracked vehicles. Though numerous prototype

Cited by 2SourceScholar
2024

RoboBall: An All-Terrain Spherical Robot with a Pressurized Shell

ICRA 2024poster

Spherical robots are a different type of mobility platform. A spherical robot is self-contained within its shell rather than relying on a chassis with wheels to navigate. In this shell, it is completely shielded from dust and the environment. This benefit of geometric simplicity has led to the spher…

Cited by 4SourceScholar