← Search

Hirotaka Sawada

5 accepted papers

2024

Mobility Performance Characterization of Transformable Nano Rover for Lunar Exploration

IROS 2024

In January 2024, a Japanese lunar lander successfully touched down on the moon as part of the Smart Lander for Investigating Moon (SLIM) mission. Accompanying the SLIM on its journey were two small rovers named lunar excursion vehicles (LEV-1 and 2). LEV-2, a transformable nano rover, was particular

Cited by 0SourceScholar
2024

Transformable Nano Rover for Space Exploration

RA-L 2024

This letter introduces a novel nano rover designed to transform its shape for efficient movement on lunar surfaces. The rover, resembling a compact ball, has a diameter of roughly 80 mm and a mass around 250 g. Its transformational mechanism allows for compactness during planetary transportation, wi

Cited by 8SourceScholar
2020

Subsurface Sampling Robot for Time-limited Asteroid Exploration

IROS 2020poster

This paper presents a novel approach to sampling subsurface asteroidal regolith under severe time constraints. Sampling operations that must be completed within a few hours require techniques that can manage subsurface obstructions that may be encountered. The large uncertainties due to our lack of…

Cited by 7SourceScholar
2018

Passive Spine Gripper for Free-Climbing Robot in Extreme Terrain

RA-L 2018

In this letter, we present a passive spine gripper that can hold rough rocky surfaces of boulders on cliff walls, and we discuss its application to a four-limbed robot for free-climbing in extreme terrain. The limbed robot has four degrees of freedom in each limb, where three are to drive joints of

Cited by 51SourceScholar
2017

Blade-type crawler vehicle with gyro wheel for stably traversing uneven terrain at high speed

ICRA 2017poster

Unmanned rescue, observation, and/or research vehicles with high terrain adaptability, high speed, and high reliability are needed in difficult-to-reach locations. However, for most vehicles, high performance over rough terrain reduces the travel speed and/or requires complex mechanisms. We have dev…

Cited by 5SourceScholar