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Kohei Nakajima

6 accepted papers

2023

"RobOstrich" Manipulator: A Novel Mechanical Design and Control Based on the Anatomy and Behavior of an Ostrich Neck

RA-L 2023

Flexible manipulators have high degrees of freedom and deformability, enabling dexterous movements and allowing for unexpected contacts with the environment. Underactuated tendon-drive mechanisms are the most widely adopted because of their simplicity and effectiveness. However, they suffer from dif

Cited by 14SourceScholar
2022

Behavioral Diversity Generated From Body-Environment Interactions in a Simulated Tensegrity Robot

RA-L 2022

Tensegrity structures, which are made of struts and tendons, are attracting attention as a platform for adaptive and resilient robots with connections to biological systems. However, they are difficult to control because of their elasticity, deformability, and tight coupling between their elements.

Cited by 7SourceScholar
2022

Continuum-Body-Pose Estimation From Partial Sensor Information Using Recurrent Neural Networks

RA-L 2022

Soft continuum arms have significant potential for use in various applications due to their extremely high degrees of freedom. For example, these soft arms can be used for grasping and manipulating fragile materials in the deep sea or carrying a human to rescue in unstructured environments. However,

Cited by 19SourceScholar
2022

Physics-Informed Recurrent Neural Networks for Soft Pneumatic Actuators

RA-L 2022

Replacing sensors with indirect sensing techniques contributes to retaining the flexibility of soft robots. By combining physical models with recurrent neural networks (which we term a <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"/> <bold xmlns:mml

Cited by 57SourceScholar
2021

Wearable Tactile Sensor Suit for Natural Body Dynamics Extraction: Case Study on Posture Prediction Based on Physical Reservoir Computing

IROS 2021poster

We propose a wearable tactile sensor suit, which can be regarded as tactile sensor networks, for monitoring natural body dynamics to be exploited as a computational resource for estimating the posture of a human or robot that wears it. We emulated the periodic motions of a wearer (a human and an and…

Cited by 8SourceScholar
2020

Shape reconstruction of CCD camera-based soft tactile sensors

IROS 2020poster

CCD camera-based tactile sensors provide high-resolution information about the deformation of soft and elastic interfaces. However, they have poor scalibility as it is difficult to sense a large surface area without increasing the distance between the camera and the interface or using multiple proce…

Cited by 12SourceScholar