Neptune R.R., Kautz S.A., Zajac F.E. Contributions of the individual ankle plantar flexors to support forward progression and swing initiation during walking. Journal of Biomechanics 2001, 34(11):1387-1398.
L.R. Palmer, Sagittal plane characterization of normal human ankle function across a range of walking gait speeds, Master's thesis, Department of Mechanical Engineering, MIT, 2002.
D.H. Gates, Characterizing ankle function during stair ascent, decent, and level walking for ankle prosthesis and orthosis design, Master's thesis, College of Engineering, Boston University, 2004.
Dollar A.M., Herr H. Lower extremity exoskeletons and active orthoses: challenges and state of the art. IEEE Transactions on Robotics 2008, 24(1):144-158.
Herr H. Exoskeletons and orthoses: classification, design challenges and future directions. Journal of NeuroEngineering and Rehabilitation 2009, 6(1):21.
Versluys R., Desomer A., Lenaerts G., Beyl P., Van Damme M., Vanderborght B., et al. From conventional prosthetic feet to bionic feet: a review study. Proceedings of the 2nd Biennial IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics 2008, 49-54.
Marchal-Crespo L., Reinkensmeyer D. Review of control strategies for robotic movement training after neurologic injury. Journal of NeuroEngineering and Rehabilitation 2009, 6(1):20.
Bharadwaj K., Sugar T.G., Koeneman J.B., Koeneman E.J. Design of a robotic gait trainer using spring over muscle actuators for ankle stroke rehabilitation. Journal of Biomechanical Engineering 2005, 127(6):1009-1013.
Varol H.A., Goldfarb M. Decomposition-based control for a powered knee and ankle transfemoral prosthesis. Proceedings of the 2007 IEEE 10th International Conference on Rehabilitation Robotics 2007, 783-789.
Cain S.M., Gordon K.E., Ferris D.P. Locomotor adaptation to a powered ankle-foot orthosis depends on control method. Journal of NeuroEngineering and Rehabilitation 2007, 4(1):48.
Riemann B.L., DeMont R.G., Ryu K., Lephart S.M. The effects of sex, joint angle, and the gastrocnemius muscle on passive ankle joint complex stiffness. Journal of Athletic Training 2001, 36(4):369-377.
Mirbagheri M.M., Barbeau H., Ladouceur M. Intrinsic and reflex stiffness in normal and spastic, spinal cord injured subjects. Experimental Brain Research 2001, 141(4):446-459.
Oymagil A.M., Hitt J.K., Sugar T., Fleeger J. Control of a regenerative braking powered ankle foot orthosis. Proceedings of the 2007 IEEE 10th International Conference on Rehabilitation Robotics 2007, 28-34.
Hitt J., Oymagil A.M., Sugar T., Hollander K., Boehler A., Fleeger J. Dynamically controlled ankle-foot orthosis (DCO) with regenerative kinetics: incrementally attaining user portability. Proceedings of the 2007 IEEE 10th International Conference on Robotics and Automation 2007, 1541-1546.
Ward J.A., Hitt J., Sugar T., Bharadwaj K. Dynamic pace controller for the robotic gait trainer. Proceedings of the IDETC/CIE 2006 ASME International Design Engineering Thecnical Conferences & Computers and Information Engineering Conference, Philadelphia 2006, 575-581.
Ward J., Sugar T., Standeven J., Engsberg J.R. Stroke survivor gait adaptation and performance after training on a powered ankle foot orthosis. Proceedings of the 2010 IEEE International Conference on Robotics and Automation 2010, 211-216.
Hitt J., Sugar T., Holgate M., Bellman R., Hollander K. Robotic transtibial prosthesis with biomechanical energy regeneration. Industrial Robot: An International Journal 2009, 36(5):441-447.
Hitt J.K., Bellman R., Holgate M., Sugar T.G., Hollander K.W. The SPARKy (Spring Ankle with Regenerative Kinetics) project: design and analysis of a robotic transtibial prosthesis with regenerative kinetics. Proceedings of the ASME 2007 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE 2007 2007, 1587-1596.
Bellman R.D., Holgate M.A., Sugar T.G. SPARKy 3: design of an active robotic ankle prosthesis with two actuated degrees of freedom using regenerative kinetics. Proceedings of the 2nd Biennial IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics 2008, 511-516.
Holgate M.A., Böhler A.W., Sugar T.G. Control algorithms for ankle robots: a reflection on the state-of-the-art and presentation of two novel algorithms. Proceedings of the 2nd Biennial IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics 2008, 97-102.
Holgate M.A., Sugar T.G., Böhler A.W. A novel control algorithm for wearable robotics using phase plane invariants. Proceedings of the 2009 IEEE International Conference on Robotics and Automation 2009, 3845-3850.
J.A. Blaya, Force-controllable ankle foot orthosis (AFO) to assist drop foot gait, Master's thesis, Department of Mechanical Engineering, MIT, 2003.
Blaya J.A., Herr H. Adaptive control of a variable-impedance ankle-foot orthosis to assist drop-foot gait. IEEE Transactions on Neural Systems and Rehabilitation Engineering 2004, 12(1):968-977.
Hollander K.W., Sugar T.G. A robust control concept for robotic ankle gait assistance. Proceedings of the 2007 IEEE 10th International Conference on Rehabilitation Robotics 2007, 119-123.
Böehler A.W., Hollander K.W., Sugar T.G., Shin D. Design, implementation and test results of a robust control method for a powered ankle foot orthosis (AFO). Proceedings of the 2008 IEEE International Conference on Robotics and Automation 2008, 2025-2030.
Hollander K.W., Ilg R., Sugar T.G., Herring D. An efficient robotic tendon for gait assistance. Journal of Biomechanical Engineering 2006, 128(5):788-791.
Sup F., Bohara A., Goldfarb M. Design and control of a powered transfemoral prosthesis. International Journal of Robotics Research 2008, 27(2):263-273.
Sup F., Varol H.A., Mitchell J., Withrow T., Goldfarb M. Design and control of an active electrical knee and ankle prosthesis. Proceedings of the 2nd Biennial IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics 2008, 523-528.
Eilenberg M.F., Geyer H., Herr H. Control of a powered anklefoot prosthesis based on a neuromuscular model. IEEE Transactions on Neural Systems and Rehabilitation Engineering 2010, 18(2):164-173.
Naito H., Akazawa Y., Tagaya K., Matsumoto T., Tanaka M. An ankle-foot orthosis with a variable-resistance ankle joint using a magnetorheological-fluid rotary damper. Biomechanical Science and Engineering 2009, 4(2):182-191.
Kikuchi T., Tanida S., Otsuki K., Yasuda T., Furusho J. Development of third-generation intelligently controllable ankle-foot orthosis with compact MR fluid brake. Proceedings of the 2010 IEEE International Conference on Robotics and Automation 2010, 2209-2214.
Ferris D.P., Czerniecki J.M., Hannaford B. An ankle-foot orthosis powered by artificial pneumatic muscles. Journal of Applied Biomechanics 2005, 21(2):189-197.
Ferris D.P., Gordon K.E., Sawicki G.S., Peethambaran A. An improved powered ankle-foot orthosis using proportional myoelectric control. Journal of Gait & Posture 2006, 23(4):425-428.
Gordon K.E., Gregory S.S., Daniel P.F. Mechanical performance of artificial pneumatic muscles to power an ankle-foot orthosis. Neural Networks 2006, 39(10):1832-1841.
Ferris D.P., Lewis C.L. Robotic lower limb exoskeletons using proportional myolectric control. Proceedings of the 31st Annual International Conference of the IEEE EMBS 2009, 2119-2124.
Sawicki G.S., Ferris D.P. Powered ankle exoskeletons reveal the metabolic cost of plantar flexor mechanical work during walking with longer steps at constant step frequency. Journal of Experimental Biology 2009, 3(212):21-31.
Sawicki G.S., Ferris D.P. A pneumatically powered knee-ankle-foot orthosis (KAFO) with myoelectric activation and inhibition. Journal of NeuroEngineering and Rehabilitation 2009, 6(1):23.
Gordon K.E., Ferris D.P. Learning to walk with a robotic ankle exoskeleton. Journal of Biomechanics 2007, 40(12):2636-2644.
Au S., Bonato P., Herr H. An EMG-position controlled system for an active ankle-foot prosthesis: an initial experimental study. Proceedings of the 2005 IEEE Conference on Rehabilitation Robotics 2005, 375-379.
Varol H.A., Goldfarb M. Real-time intent recognition for a powered knee and ankle transfemoral prosthesis. Proceedings of the 2007 IEEE 10th International Conference on Rehabilitation Robotics 2007, 16-23.
Varol H.A., Sup F., Goldfarb G. Real-time gait mode intent recognition of a powered knee and ankle prosthesis for standing and walking. Proceedings of the 2nd Biennial IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics 2008, 66-72.
Varol H.A., Sup F., Goldfarb M. Powered sit-to-stand and assistive stand-to-sit framework for a powered transfemoral prosthesis. Proceedings of the 2009 IEEE International Conference on Rehabilitation Robotics 2009, 645-651.
Varol H.A., Sup F., Goldfarb M. Multiclass real-time intent recognition of a powered lower limb prosthesis. IEEE Transactions on Biomedical Engineering 2010, 57(3):542-551.
Au S., Berniker M., Herr H. Powered ankle-foot prosthesis to assist level-ground and stair descent gaits. Neural Networks 2008, 21(4):654-666.
Kawamoto H., Taal S., Niniss H., Hayashi T., Kamibayashi K., Eguchi K., et al. Voluntary motion support control of robot suit hal triggered by bioelectrical signal for hemiplegia. 32nd Annual International Conference of the IEEE EMBS 2010, 462-466.
Kawamoto H., Lee S., Kanbe S., Sankai Y. Power assit method for HAL-3 using EMG-based feedback controller. Proceedings of the 2003 International Conference on Systems 2003, 1648-1653.
Kawamoto H., Sankai Y. Power assist system HAL-3 for gait disorder person. Computers Helping People with Special Needs, Lecture Notes in Computer Science, vol. 2398 2002, 19-29. Springer, Berlin, Heidelberg. K. Miesenberger, J. Klaus, W. Zagler (Eds.).
Lee S., Sankai Y. Power assit control for walking aid with HAL-3 based on EMG and impedance adjustment around knee joint. Proceedings of the 2002 International Conference on Intelligent Robots and Systems 2002, 1499-1504.
Kawamoto H., Kanbe S., Sankai Y. Power assit method for HAL-3 estimating operator's intention based on motion information. Proceedings of the 2003 IEEE International Workshop on Robot and Human Interactive Communication 2003, 67-71.
Fleischer C., Reinicke C., Hommel G. Predicting the intended motion with EMG signals for an exoskeleton orthosis controller. Proceedings of the 2005 International Conference on Intelligent Robots and Systems 2005, 2029-2034.
Fleischer C., Hommel G. EMG-driven human model for orthosis control. Human Interaction with Machines 2006, 69-76. Springer, Netherlands. G. Hommel, S. Huanye (Eds.).
Fleischer C., Hommel G. Embedded control system for a powered leg exoskeleton. Embedded Systems Modeling, Technology, and Applications 2006, 177-185. Springer, Netherlands. G. Hommel, S. Huanye (Eds.).
Fleischer C., Kondak K., Wege A., Kossyk I. Research on exoskeletons at the TU berlin. Advances in Robotics Research 2009, 335-346. Springer, Berlin, Heidelberg. T. Kroger, F.M. Wahl (Eds.).
Kazerooni H. The Berkeley lower extremity exoskeleton project. Experimental Robotics IX, Springer Tracts in Advanced Robotics, vol. 21 2006, 291-301. Springer, Berlin, Heidelberg. M. Ang, O. Khatib (Eds.).
Kazerooni H., Racine J., Huang L., Steger R. On the control of the Berkeley Lower Extremity Exoskeleton (BLEEX). Proceedings of the 2005 IEEE International Conference on Robotics and Automation 2005, 4364-4371.
Kazerooni H., Steger R. The berkeley lower extremity exoskeleton. Journal of Dynamic Systems Measurement and Control 2006, 128(1):14-25.
Ghan J., Steger R., Kazerooni H. Control and system identification for the Berkeley lower extremity exoskeleton. Advanced Robotics 2006, 2(9):989-1014.
Sawicki G., Domingo A., Ferris D. The effects of powered ankle-foot orthoses on joint kinematics and muscle activation during walking in individuals with incomplete spinal cord injury. Journal of NeuroEngineering and Rehabilitation 2006, 3(1):3.
Popović D. Externally powered and controlled orthotics and prosthetics. The Biomedical Engineering Handbook 2000, CRC Press, LLC. J.D. Bronzino (Ed.).
Popovic D., Sinkjær T. Improved control for functional electrical stimulation to restore walking. Honk Kong Physiotherapy Journal 2000, 18(1):12-20.
Nekoukar V., Erfanian A. Adaptive terminal sliding mode control of ankle movement using functional electrical stimulation of agonist-antagonist muscles. 32nd Annual International Conference of the IEEE EMBS 2010, 5448-5451.
Moreno J.C., Rocon de Lima E., Ruíz A.F., Brunetti F.J., Pons J.L. Design and implementation of an inertial measurement unit for control of artificial limbs: application on leg orthoses. Sensors and Actuators B: Chemical 2006, 118(1-2):333-337.
