Hiroaki Hirai

Publication Activity (10 Years)

Years Active: 1998-2024
Publications (10 Years): 17

Top Topics

Virtual Reality

Equilibrium Point

Top Venues

Publications

Kotaro Okada, Kazuhiro Matsui, Keita Atsuumi, Kazuhiro Taniguchi, Hiroaki Hirai, Atsushi Nishikawa
A Study of Spatial Perception in Virtual Space via Display and the Intervention Effects of Haptic Feedback. IEEE Access 12 (2024)
Yuto Okamoto, Kazuhiro Matsui, Tetsuya Ando, Keita Atsuumi, Kazuhiro Taniguchi, Hiroaki Hirai, Atsushi Nishikawa
Pilot study of the relation between various dynamics of avatar experience and perceptual characteristics. PeerJ Comput. Sci. 10 (2024)
Tetsuya Ando, Yuto Okamoto, Kazuhiro Matsui, Keita Atsuumi, Kazuhiro Taniguchi, Hiroaki Hirai, Atsushi Nishikawa
Visual EMG Biofeedback System in a Virtual Reality Space for Relearning Internal Models* -Case studies focusing on equilibrium point velocity-. SII (2023)
Kazuhiro Matsui, Yuya Suzuki, Keita Atsuumi, Miwa Nagai, Shotaro Ohno, Hiroaki Hirai, Atsushi Nishikawa, Kazuhiro Taniguchi
Earable Ω (OMEGA): A Novel Clenching Interface Using Ear Canal Sensing for Human Metacarpophalangeal Joint Control by Functional Electrical Stimulation. Sensors 22 (19) (2022)
Kazuto Noro, Hiroaki Hirai, Hideya Okamoto, Daisuke Kogawa, Chikako Kamimukai, Hiroshi Nagao, Yasunori Kaneko, Kaito Hori, Satoru Yamamoto, Naoto Yamada, Takashi Yajima, Kazuhiro Matsui, Atsushi Nishikawa, Hermano Igo Krebs
Inter-limb Asymmetry of Equilibrium Regulation in the Legs of 10-11-Year-Old Boys during Overground Sprinting. EMBC (2021)
Kohei Kozasa, Pham Duc Huy Hoang, Hiroaki Hirai, Kaito Hori, Hideto Niwa, Ryo Fujihara, Kazuhiro Matsui, Atsushi Nishikawa, Hermano Igo Krebs
Electrical Stimulation to Modulate Human Ankle Impedance: Effects of Intervention on Balance Control in Quiet and Perturbed Stances. BioRob (2020)
Eichi Watanabe, Hiroaki Hirai, Hermano Igo Krebs
Equilibrium point-based control of muscle-driven anthropomorphic legs reveals modularity of human motor control during pedalling. Adv. Robotics 34 (5) (2020)
Mitsunori Uemura, Hiroaki Hirai
Standing and Stepping Control with Switching Rules for Bipedal Robots Based on Angular Momentum Around Ankle. Int. J. Humanoid Robotics 16 (5) (2019)
Eichi Watanabe, Kohei Kozasa, Ryo Fujihara, Hiroaki Hirai, Keishi Yoshida, Hiroaki Naritomi, Hermano Igo Krebs
Exploiting the Invariant Structure for Controlling Multiple Muscles in Anthropomorphic Legs: III. Reproducing Hemiparetic Walking from Equilibrium Point- Based Synergies. ICORR (2019)
Kohei Kozasa, Ryo Fujihara, Hiroaki Hirai, Hermano Igo Krebs
Interferential Electrical Stimulation Applied to the Soleus Muscle in Humans: Preliminary Study on the Relationship Among Stimulation Parameters, Force Output, and Pain Sensation. BioRob (2018)
Ryo Fujihara, Kohei Kozasa, Hiroaki Hirai, Hermano Igo Krebs
Alteration in Foot Strike Pattern While Running with Elastic Insoles: Case Study on the Effects of Long-term Training. BioRob (2018)
Brennan Leo Jackson, Rui Moura Coelho, Hiroaki Hirai, Hermano Igo Krebs
An Investigation into Rhythmic and Discrete Gait Using the MIT Skywalker. BioRob (2018)
Ippei Kamada, Mitsunori Uemura, Hiroaki Hirai, Fumio Miyazaki
Efficacy of a knee orthosis that uses an elastic element. EMBC (2017)
Natsumi Kataoka, Hiroaki Hirai, Taya Hamilton, Fumiaki Yoshikawa, Akira Kuroiwa, Yuma Nagakawa, Eichi Watanabe, Yudai Ninomaru, Yuri Saeki, Mitsunori Uemura, Fumio Miyazaki, Hiroshi Nakata, Tomoki Nishi, Hiroaki Naritomi, Hermano Igo Krebs
Effects of partial body-weight support and functional electrical stimulation on gait characteristics during treadmill locomotion: Pros and cons of saddle-seat-type body-weight support. ICORR (2017)
Rogério Sales Gonçalves, Taya Hamilton, Ali R. Daher, Hiroaki Hirai, Hermano Igo Krebs
MIT-Skywalker: Evaluating comfort of bicycle/saddle seat. ICORR (2017)
Fumiaki Yoshikawa, Hiroaki Hirai, Eichi Watanabe, Yuma Nagakawa, Akira Kuroiwa, Emerson Paul Grabke, Mitsunori Uemura, Fumio Miyazaki, Hermano Igo Krebs
Equilibrium-point-based synergies that encode coordinates in task space: A practical method for translating functional synergies from human to musculoskeletal robot arm. Humanoids (2016)
Eichi Watanabe, Takanori Oku, Hiroaki Hirai, Fumiaki Yoshikawa, Yuma Nagakawa, Akira Kuroiwa, Emerson Paul Grabke, Mitsunori Uemura, Fumio Miyazaki, Hermano Igo Krebs
Exploiting invariant structure for controlling multiple muscles in anthropomorphic legs: II. Experimental evidence for three equilibrium-point-based synergies during human pedaling. Humanoids (2016)
Mitsunori Uemura, Hiroaki Hirai, Fumio Miyazaki
Adaptive tracking control with partial regressor for multi-joint robot. IECON (2015)
Eichi Watanabe, Takanori Oku, Hiroaki Hirai, Kanna Uno, Mitsunori Uemura, Fumio Miyazaki
Exploiting invariant structure for controlling multiple muscles in anthropomorphic legs: An inspiration from electromyography analysis of human pedaling. Humanoids (2015)
Takanori Oku, Kanna Uno, Tomoki Nishi, Masayuki Kageyama, Pipatthana Phatiwuttipat, Keitaro Koba, Yuto Yamashita, Kenta Murakami, Mitsunori Uemura, Hiroaki Hirai, Fumio Miyazaki, Hiroaki Naritomi
Pilot study on quantitative assessment of muscle imbalance: Differences of muscle synergies, equilibrium-point trajectories, and endpoint stiffness in normal and pathological upper-limb movements. EMBC (2014)
Masahiro Takeuchi, Jun Shimodaira, Yuki Amaoka, Shinsuke Hamatani, Hiroaki Hirai, Fumio Miyazaki
Reconstruction of Human Skills by Using PCA and Transferring them to a Robot. J. Robotics Mechatronics 26 (1) (2014)
Hang T. T. Pham, Yohei Ariga, Kenta Tominaga, Takanori Oku, Kanna Nakayama, Mitsunori Uemura, Hiroaki Hirai, Fumio Miyazaki
Extraction and implementation of muscle synergies in neuro-mechanical control of upper limb movement. Adv. Robotics 28 (11) (2014)
Mitsunori Uemura, Sadao Kawamura, Hiroaki Hirai, Fumio Miyazaki
Iterative motion learning with stiffness adaptation for multi-joint robots. ROBIO (2014)
Keitaro Koba, Kenta Murakami, Takanori Oku, Kanna Uno, Pipatthana Phatiwuttipat, Yuto Yamashita, Mitsunori Uemura, Hiroaki Hirai, Fumio Miyazaki
Tacit representation of muscle activities during coordination training: Muscle synergy analysis to visualize motor enhancement in virtual trajectory of multi-joint arm movement. BioRob (2014)
Kanna Uno, Takanori Oku, Pipatthana Phatiwuttipat, Keitaro Koba, Yuto Yamashita, Kenta Murakami, Mitsunori Uemura, Hiroaki Hirai, Fumio Miyazaki
A novel muscle synergy extraction method to explain the equilibrium-point trajectory and endpoint stiffness during human upper-limb movements on a horizontal plane. BioRob (2014)
Yohei Ariga, Daisuke Maeda, Hang T. T. Pham, Mitsunori Uemura, Hiroaki Hirai, Fumio Miyazaki
Novel equilibrium-point control of agonist-antagonist system with pneumatic artificial muscles: II. Application to EMG-based human-machine interface for an elbow-joint system. IROS (2012)
Daisuke Maeda, Kenta Tominaga, Takanori Oku, Hang T. T. Pham, Shin Saeki, Mitsunori Uemura, Hiroaki Hirai, Fumio Miyazaki
Muscle synergy analysis of human adaptation to a variable-stiffness exoskeleton: Human walk with a knee exoskeleton with pneumatic artificial muscles. Humanoids (2012)
Takanori Oku, Keita Inoue, Hang T. T. Pham, Kenta Tominaga, Daisuke Maeda, Mitsunori Uemura, Hiroaki Hirai, Fumio Miyazaki
Analysis of muscle coordination in human pedaling and implementation with a musculoskeletal robot. Humanoids (2012)
Yohei Ariga, Hang T. T. Pham, Mitsunori Uemura, Hiroaki Hirai, Fumio Miyazaki
Novel equilibrium-point control of agonist-antagonist system with pneumatic artificial muscles. ICRA (2012)
Taiki Iimura, Keita Inoue, Hang T. T. Pham, Hiroaki Hirai, Fumio Miyazaki
Decomposition of Limb Movement Based on Muscular Coordination During Human Running. J. Adv. Comput. Intell. Intell. Informatics 15 (8) (2011)
Taiki Iimura, Keita Inoue, Hang T. T. Pham, Hiroaki Hirai, Fumio Miyazaki
A preliminary experiment for transferring human motion to a musculoskeletal robot - Decomposition of human running based on muscular coordination -. IROS (2011)
Hang T. T. Pham, Mariko Kimura, Hiroaki Hirai, Fumio Miyazaki
Extraction and implementation of muscle synergies in hand-force control. ICRA (2011)
Hang T. T. Pham, Ryohei Ueha, Hiroaki Hirai, Fumio Miyazaki
A study on dynamical role division in a crank-rotation task from the viewpoint of kinetics and muscle activity analysis. IROS (2010)
Ryohei Ueha, Hang T. T. Pham, Hiroaki Hirai, Fumio Miyazaki
A simple control design for human-robot coordination based on the knowledge of dynamical role division. IROS (2009)
Hiroaki Hirai, Ryuta Ozawa, Satoru Goto, Hiroki Fujigaya, Shodo Yamasaki, Yasuhiko Hatanaka, Sadao Kawamura
Development of an ankle-foot orthosis with a pneumatic passive element. RO-MAN (2006)
Hiroaki Hirai, Fumio Miyazaki
Dynamic coordination between robots: self-organized timing selection in a juggling-like ball-passing task. IEEE Trans. Syst. Man Cybern. Part B 36 (4) (2006)
Hiroaki Hirai, Fumio Miyazaki
Emergence of a dynamic pattern in wall-bouncing juggling: self-organized timing selection for rhythmic movement. Robotica 24 (3) (2006)
Hiroaki Hirai, Fumio Miyazaki
Passive Stabilization of Juggling-like Ball-passing Task. ICRA (2006)
Hiroaki Hirai, Fumio Miyazaki
Dynamic temporal patterns betwen robots: The self-organized timing selection in juggling-like passing the balls. ROBIO (2005)
Hiroaki Hirai, Fumio Miyazaki
What Are Key Mechanisms for Adaptive Wall-Bouncing Control? ROBIO (2004)
Hiroaki Hirai, Fumio Miyazaki
Rhythmic Movement by Neural Oscillator with Periodic Stimulus. ICRA (2003)
Hiroaki Hirai, Yasuhiro Masutani, Fumio Miyazaki
Motion Estimation of an Unknown Rigid Body Rotating Freely in Zero Gravity Based on Complex Spectrum of Position of a Point on the Body. ICRA (1998)