The verification of permissible resistant torque considering back-drivability to develop a wearable assist suit. - Shingo Iikawa; Manabu Okui; Yasuyuki Yamada; Taro Nakamura 001 (ICARCV, 2016)

1st prototype of a variable viscoelastic joint system with a clutch composed of pneumtic air muscle and magneto rheological brake. - Auth Manabu Okui; Shingo Iikawa; Yasuyuki Yamada; Taro Nakamura 001 (ICARCV, 2016)

Semi-endoskeleton-type waist assist AB-wear suit equipped with compressive force reduction mechanism. - Hiroki Inose; Shun Mohri; Hirokazu Arakawa; Manabu Okui; Katsuya Koide; Yasuyuki Yamada; Isao Kikutani; Taro Nakamura 001 (ICRA, 2017)

Variable viscoelastic joint system and its application to exoskeleton. - Manabu Okui; Shingo Iikawa; Yasuyuki Yamada; Taro Nakamura 001 (IROS, 2017)

A pneumatic power source using a sodium bicarbonate and citric acid reaction with pressure booster for use in mobile devices. - Manabu Okui; Yuki Nagura; Shingo Iikawa; Yasuyuki Yamada; Taro Nakamura 001 (IROS, 2017)

Socks Type Actuator That Provides Exercise for Ankle and Toes from the Medical Point of View. - Hayato Sasanuma; Hideyuki Tsukagoshi; Manabu Okui (AIM, 2018)

Hollow Pneumatic Artificial Muscles with Air Cylinder: Improvement for compatibility of high durability and high efficiency. - Yasuyuki Yamada; Akihiro Kojima; Yutaro Higashi; Manabu Okui; Taro Nakamura 001 (BioRob, 2018)

Prolonging the lifetime of straight-fiber-type pneumatic rubber artificial muscle by shape consideration and material development. - Akihiro Kojima; Manabu Okui; Yasuyuki Yamada; Taro Nakamura 001 (RoboSoft, 2018)

Novel feedforward controller for straight-fiber-type artificial muscle based on an experimental identification model. - Ryuji Suzuki; Manabu Okui; Shingo Iikawa; Yasuyuki Yamada; Taro Nakamura 001 (RoboSoft, 2018)

Hybrid Pneumatic Source Based on Evaluation of Air Compression Methods for Portability. - Manabu Okui; Yuki Nagura; Yasuyuki Yamada; Taro Nakamura 001 (IEEE Robotics Autom. Lett., 2018)

Assistive method that controls joint stiffness and antagonized angle based on human joint stiffness characteristics and its application to an exoskeleton. - Seigo Kimura; Ryuji Suzuki; Masashi Kashima; Manabu Okui; Rie Nishihama; Taro Nakamura 001 (ICAR, 2019)

Research of human-robot handshakes under variable stiffness conditions. - Kejia Dai; Yage Liu; Manabu Okui; Rie Nishihama; Taro Nakamura 001 (ICARM, 2019)

Rendering friction and viscosity using a wearable 4 degrees of freedom force feedback device with magnetorheological fluid clutches and pneumatic artificial muscles. - Yuki Onozuka; Minoru Oba; Manabu Okui; Taro Nakamura 001 (IECON, 2019)

Deformation Measurement of Dielectric Elastomer using Slide Ring Material on a 2-D Plane. - T. Hayashi; Manabu Okui; Y. Yonehara; Taro Nakamura 001 (SII, 2019)

Straight-Fiber-Type Artificial Muscle Deformation Under Pressurization. - Akihiro Kojima; Manabu Okui; Itsuki Hisamichi; Tomoaki Tsuji; Taro Nakamura 001 (IEEE Robotics Autom. Lett., 2019)

Variable Viscoelastic Joint Module with Built-in Pneumatic Power Source. - Katsuki Machida; Seigo Kimura; Ryuji Suzuki; Kazuya Yokoyama; Manabu Okui; Taro Nakamura 001 (AIM, 2020)

Wearable Air-Jet Force Feedback Device without Exoskeletal Structure and Its Application to Elastic Ball Rendering. - Manabu Okui; Toru Masuda; T. Tamura; Yuki Onozuka; Taro Nakamura 001 (AIM, 2020)

Proposal for Pipeline-Shape Measurement Method Based on Highly Accurate Pipeline Length Measurement by IMU Sensor Using Peristaltic Motion Characteristics. - Hiroto Sato; Yuki Mano; Fumio Ito; Takumi Yasui; Manabu Okui; Rie Nishihama; Taro Nakamura 001 (AIM, 2020)

Effect of penetration force on drilling efficiency for seabed drilling robot. - Wataru Toyama; Keita Isaka; Kazuki Tsumura; Tomoki Watanabe; Manabu Okui; Hiroshi Yoshida; Taro Nakamura 001 (AIM, 2020)

Influence of vertical acceleration for inducing sensation of dropping by lower limb force feedback device. - Toshinari Tanaka; Yuki Onozuka; Manabu Okui; Rie Nishihama; Taro Nakamura 001 (RO-MAN, 2020)

Mixing State Estimation of Peristaltic Continuous Mixing Conveyor with Distributed Sensing System Based on Soft Intestine Motion. - Kota Wakamatsu; Katsuma Inoue; D. Hagiwara; H. Adachi; Daisuke Matsui; Shunichi Kurumaya; Rie Nishihama; Manabu Okui; Kohei Nakajima; Yasuo Kuniyoshi; Taro Nakamura 001 (RoboSoft, 2020)

Dielectric elastomer actuator that can be deformed without pre-stretching and its application to flexible wave-generating device. - T. Hayashi; H. Kumamoto; Manabu Okui; Y. Yonehara; H. Takeuchi; Taro Nakamura 001 (SII, 2020)

Clay Drilling Performance of Seabed Robotic Explorer Using Peristaltic Motion. - Keita Isaka; Kazuki Tsumura; Tomoki Watanabe; Wataru Toyama; Manabu Okui; Hiroshi Yoshida; Taro Nakamura 001 (SII, 2020)

Proposal for 3D-printed pneumatic artificial muscles -Effect of leaf spring stiffness on contraction amount and contraction force-. - Fumio Ito; Akihiro Kojima; Manabu Okui; Taro Nakamura 001 (SII, 2020)

Noninflatable Pneumatic Artificial Muscle Requiring Low Space and Consumption Flow Rate. - Manabu Okui; Fumio Ito; Akihiro Kojima; Taro Nakamura 001 (SII, 2020)

Fundamental characteristics for rendering elasticity of a force feedback method using elastic spring and magneto-rheological fluid clutch. - M. Ooba; Yuki Onozuka; Manabu Okui; Taro Nakamura 001 (SII, 2020)

Soil Discharging Mechanism Utilizing Water Jetting to Improve Excavation Depth for Seabed Drilling Explorer. - Keita Isaka; Kazuki Tsumura; Tomoki Watanabe; Wataru Toyama; Manabu Okui; Hiroshi Yoshida; Taro Nakamura 001 (IEEE Access, 2020)

Proposal of Motion Judgment Algorithm Based on Joint Angle of Variable Elastic Assist Suit with High Back Drivability. - Seigo Kimura; Ryuji Suzuki; Katsuki Machida; Rie Nishihama; Manabu Okui; Taro Nakamura 001 (J. Robotics Mechatronics, 2020)

Construction of Distributed Sensing System for Peristaltic Continuous Mixing Conveyor Imitating Intestines: Internal State Measurement Using Accelerometer. - Sana Oshino; Kota Wakamatsu; Daisuke Matsui; Rie Nishihama; Manabu Okui; Taro Nakamura 001 (AIM, 2021)

Propulsion Unit Control Method for Visualization of Grasping State of Earthworm-type Lunar Excavation Robot. - Ryosuke Tokoi; Wataru Toyama; Tomoki Watanabe; Kazuki Tsumura; Manabu Okui; Hirotaka Sawada; Takashi Kubota; Taro Nakamura 001 (AIM, 2021)

Excavation Experiment of Earth Worm Type Seabed Exploration Robot in Actual Sea Area. - Manabu Okui; Ryosuke Tokoi; Wataru Toyama; Kazuki Tsumura; Keita Isaka; Tomoki Watanabe; Taro Nakamura 001; Hiroshi Yoshida (CLAWAR, 2021)

Horizontal Drilling with Seabed Robotic Explorer. - Ryosuke Tokoi; Wataru Toyama; Kazuki Tsumura; Tomoki Watanabe; Manabu Okui; Taro Nakamura 001; Hiroshi Yoshida (CLAWAR, 2021)

Development of a Wearable Four-Degrees-of-Freedom Force Feedback Device with a Clutch Mechanism Using Artificial Muscle Contraction. - Ryunosuke Sawahashi; Yuki Onozuka; Toshinari Tanaka; Manabu Okui; Taro Nakamura 001 (ICIT, 2021)

Dropping Sensation for Development of Lower Limb Force Feedback Device. - Taiki Masuda; Toshinari Tanaka; Ryunosuke Sawahashi; Manabu Okui; Rie Nishihama; Taro Nakamura 001 (RO-MAN, 2021)

In-Pipe Inspection Robot Capable of Actively Exerting Propulsive and Tractive Forces With Linear Antagonistic Mechanism. - Fumio Ito; Kazuki Takaya; Masashi Kamata; Manabu Okui; Yasuyuki Yamada; Taro Nakamura 001 (IEEE Access, 2021)

Generalization Capability of Mixture Estimation Model for Peristaltic Continuous Mixing Conveyor. - Sana Oshino; Rie Nishihama; Kota Wakamatsu; Katsuma Inoue; Daisuke Matsui; Manabu Okui; Kohei Nakajima; Yasuo Kuniyoshi; Taro Nakamura 001 (IEEE Access, 2021)

Development of a Compact Pneumatic Valve Using Rotational Motion for a Pneumatically Driven Mobile Robot With Periodic Motion in a Pipe. - Hiroto Sato; Kousuke Uchiyama; Yuki Mano; Fumio Ito; Shunichi Kurumaya; Manabu Okui; Yasuyuki Yamada; Taro Nakamura 001 (IEEE Access, 2021)

Grasping Characteristics of Flexible Propulsion Unit Using Braid Mechanism for Lunar Exploration Robot. - Chikage Fujikawa; Ryosuke Tokoi; Wataru Toyama; Manabu Okui; Tomoaki Tsuji; Taro Nakamura 001; Takashi Kubota (CLAWAR, 2022)

Evaluation of Support Device for Manual Handling of Gas Cylinders. - Kiyotaka Oba; Manabu Okui; Rie Nishihama; Taro Nakamura 001 (CLAWAR, 2022)

Deveropmrnt of Anisotropic Short-Fiber Oriented Rubber and its Application To Elongation Actuators. - H. Kunisada; K. Fujitani; Fumio Ito; Manabu Okui; Taro Nakamura 001 (IECON, 2022)

Prototype of an exoskeletal lower limb force-feedback device for moving extensively in VR space. - Taiki Masuda; Ryunosuke Sawahashi; Jonah Komatsu; Manabu Okui; Rie Nishihama; Taro Nakamura 001 (IECON, 2022)

Control of single-stroke movement of a drum-playing robot by reinforcement learning using a realistic artificial muscle-driven robot. - Manabu Okui; Shiori Nakamura; Seigo Kimura; Ryuji Suzuki; Rie Nishihama; Taro Nakamura 001 (IECON, 2022)

Mixing Determination for Solid Rocket Fuel Production by Peristaltic Mixing Pump Using Packing Method. - Sana Oshino; Iori Terayama; Rie Nishihama; Manabu Okui; Taro Nakamura 001 (IECON, 2022)

Development of Semi-active Force Feedback Shoes with MR Brake Rendering a Falling Sensation and Descent Acceleration Measurement. - Ryunosuke Sawahashi; Toshinari Tanaka; Taiki Masuda; Manabu Okui; Rie Nishihama; Taro Nakamura 001 (IECON, 2022)

Proposal of posture guidance method using air jetting with table tennis racket type device. - Rin Suzuki; Ryunosuke Sawahashi; Rie Nishihama; Manabu Okui; Taro Nakamura 001 (IECON, 2022)

Ice-drilling and Gripping Experiments in Actual Conditions for Developing Earthworm-type Ice-drilling Robot for Extensive Under-sea-ice Surveys. - Ryosuke Tokoi; Chikage Fujikawa; Wataru Toyama; Manabu Okui; Hiroshi Yoshida; Taro Nakamura 001 (IECON, 2022)

Assist Effectiveness Study based on Viscosity: Comparison of Assumed Command Signal and Actual Command Signal. - Yusuke Shimoda; Tetsuhito Fujita; Katsuki Machida; Manabu Okui; Rie Nishihama; Taro Nakamura 001 (RO-MAN, 2022)

Proposal of a decentralized peristaltic movement generation based on actual intestines and verification by content transfer experiment. - Daisuke Matsui; Sana Oshino; Iori Terayama; Rie Nishihama; Manabu Okui; Taro Nakamura 001 (SII, 2022)

Development of Peristaltic Transfer System to Transport Feces in Space: Proposal of Driving Method Using Pressure Difference in Peristaltic Pump. - Shogo Uzawa; Hiroya Kumamoto; Chiaki Yamazaki; Manabu Okui; Taro Nakamura 001 (IEEE Access, 2022)

Proposal for a Lifting Support Device for LP Gas Delivery Operations. - Kiyotaka Oba; Ryunosuke Sawahashi; Manabu Okui; Rie Nishihama; Taro Nakamura 001 (IECON, 2023)

Components and Basic Evaluation of Earthworm-Type Ice-Drilling Robot for Exploration Under Arctic-Sea-Ice. - Yuka Takeda; Ryosuke Tokoi; Chikage Fujikawa; Manabu Okui; Hiroshi Yoshida; Taro Nakamura 001 (IECON, 2023)

Proposal of a Method for Measuring Inside Diameter of Tubes Using a Drive Unit of a Robot for Inspection of Small Tubes. - Hiroto Nagashima; Fumio Ito; Taro Nakamura 001; Kousuke Uchiyama; Manabu Okui (ISIE, 2023)

Presentation of Underwater Sensation by Drag in Knee Motion with a Lower Limb Exoskeleton Using MR Fluid Brakes. - Ryunosuke Sawahashi; Taiki Masuda; Taiga Shimizu; Rie Nishihama; Manabu Okui; Taro Nakamura 001 (ISIE, 2023)

Development of an Evaluation Simulator for Gastrointestinal Stents by Applying a Peristaltic Pump: Prototype fabrication of evaluation simulators and characteristic tests. - Shogo Uzawa; Takeru Hashiguchi; Manabu Okui; Taro Nakamura 001 (ROBIO, 2023)

Development of Shoulder Mechanism for a Wearable Upper Limb Force-Feedback Device with Pneumatic Artificial Muscles and MR Brakes. - Jonah Komatsu; Ryunosuke Sawahashi; Taiki Masuda; Manabu Okui; Taro Nakamura 001 (SII, 2023)

Experimental evaluation of the white cane device with force-feedback function using air jets. - Hirochika Oshima; Ryunosuke Sawahashi; Manabu Okui; Rie Nishihama; Taro Nakamura 001 (SII, 2023)

Discrimination of Powder Particle Size and Input Amounts for the Estimation of Mixing Using a Peristaltic Mixing Conveyor Imitating an Intestinal Tube. - Iori Terayama; Sana Oshino; Rie Nishihama; Manabu Okui; Taro Nakamura 001 (SII, 2023)

Development of a Bimanual Wearable Force Feedback Device with Pneumatic Artificial Muscles, MR Fluid Brakes, and Sensibility Evaluation Based on Pushing Motion. - Ryunosuke Sawahashi; Jonah Komatsu; Rie Nishihama; Manabu Okui; Taro Nakamura 001 (J. Robotics Mechatronics, 2023)

Effect of Force Feedback during Interaction with Straight-line Movement in a VR Space by an Upper-limb Wearable Force Feedback Device. - Natsuki Hayami; Ryunosuke Sawahashi; Jonah Komatsu; Rie Nishihama; Manabu Okui; Taro Nakamura 001 (AIM, 2024)

Exoskeleton-type Assist Device Focusing on the Variable Viscosity Characteristics of the Knee Joint During Stair Descent. - Tomotaka Sugino; Yusuke Shimoda; Manabu Okui; Rie Nishihama; Taro Nakamura 001 (BioRob, 2024)

Endoskeletal Deep Vein Thrombosis Prevention Device Using a Combining Intermittent Pneumatic Compression and Assisted Ankle Exercises. - Akihiro Kobayashi; Manabu Okui; Taro Nakamura 001 (HSI, 2024)

Knee Joint Assist Method Focusing on Joint Viscosity Properties Using IMU - Based Exoskeleton Assist Device. - Tomotaka Sugino; Yusuke Shimoda; Manabu Okui; Taro Nakamura 001 (HSI, 2024)

Knee Joint Assist in Seated Motion Focusing on Variable Viscosity Property in Exoskeleton Assistive Device: Comparison of Variable and Constant Viscosity Coefficients. - Yusuke Shimoda; Tomotaka Sugino; Manabu Okui; Rie Nishihama; Taro Nakamura 001 (IEEE Access, 2024)

Construction of Motion Mode Switching System by Machine Learning for Peristaltic Mixing Conveyor Based on Intestinal Movement. - Iori Terayama; Sana Oshino; Rie Nishihama; Manabu Okui; Ryosuke Adachi; Taro Nakamura 001 (IEEE Access, 2024)

HADEC - High-Response Artificial Muscle Actuator Using Dimethyl Ether Combustion. - Kengo Mori; K. Tsurumi; Ryunosuke Sawahashi; R. Enjo; Taro Nakamura 001; Manabu Okui (IEEE Robotics Autom. Lett., 2025)