S. Lee, Y. Saki,′′Power Assist Control for Walking Aid Based on EMG and Impedance Adjustment with HAL-3 around Knee Joint,′′ Proceedings of the 2002 IEEW/RSJ Intl. Conference on Intelligent Robots and Systems, pp. 1499-1504.
T. Hayashi, H. Kawamoto, and Y. Sankai, “Control Method of Robot Suit HAL working as Operator's Muscle using Biological and Dynamical Information,” In Proc. IEEE/RSJ Int. Conf. on Intelligent Robots and System (IROS), 2005, pp. 3063-3068.
Manabu Okui, Shingo iikawa, Yasuyuki Yamada and Taro Nakamura,′′1st Prototype of a Variable Viscoelastic Joint System with a Clutch Composed of Pneumtic Air Muscle And Magneto Rheological Brake,′′ 2016 14th International Conference on Control, Automation, Robotics & Vision Phuket, Thailand, 13-15th November 2016 (ICARCV 2016).
S. Kimura, R. Suzuki, K. Machida, M. Kashima, M. Okui, R. Nishihama and T. Nakamura, ′′Development of an Exoskeleton-Type Assist Suit Utilizing Variable Stiffness Control Devices Based on Human Joint Characteristics,′′ MDPI Journal Actuators, Volume 10, Issue 1, https://DOI.org/10.3390/act10010017, 2021.
Y. Shimoda, T. Fujita, K. Machida, M. Okui, R. Nishihama, and T. Nakamura,′′Assist Effectiveness Study based on Viscosity: Comparison of Assumed Command Signal and Actual Command Signal′′ 2022 31st IEEE International Conference on Robot and Human Interactive Communication (RO-MAN), pp. 686-692.