Sit-to-stand (STS) movement is a common human task which involves combination of a musculoskeletal structure integrated with neural control. We present a conceptual 3D bipedal nonlinear model for STS task with optimal controller design for exoskeletontorques. This model has 7 sagittal plane angles, 3 frontal plane angles, and 3 foot translational variables with 3 position based holonomic constraints. We regulate the model with optimal controller design by coupled torque optimization due to muscular interaction between ankle, knee and hip joints. Our simulation results show the improvement in the results from previous controller design schemes. We further obtain experimental data for STS task on a force plate to compare the ground reaction forces of experimental data with our mathematical framework. This proves the validity of the model to extend this mathematical framework for further analysis of healthy and neuro-deficient subjects and accordingly designs of ergonomics and rehabilitation robotics.

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ARAMIS (automatic Recovery arm Motility integrated System) is a master-slave exoskeleton robot, studied and designed in order to provide the therapist an innovative and time/cost efficiency approach to the rehabilitation of the paretic upper limb after a stroke event. The system has been developed in order to enable therapists to define and apply, patient specific rehabilitation exercises. the final prototype enables three types of exercises: 1) Asyncronous Exercise 2) Syncronous Exercise and 3) Virtual Reality Based Exercise. The research activities were carried on in a multidisciplinary environment composed by neurologist, engineers, ICT specialists and designers.

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Magnetorheological fluid (MRF) is a smart material that has the property of changing its viscosity when exposed to a magnetic field. By placing this fluid into a sealed cylinder with an electromagnet piston as a core, a controllable resistance motion dampener can be created. A novel exoskeleton mechanical power transmission system was designed, utilizing rapid prototype parts, to transmit these resistive forces to the user’s fingertips. A first iteration force feedback glove was developed and tested on human subjects for overall usability. The eventual goal of the system is to provide an alternative force producing system for exercises and rehabilitation. The entire system is lightweight, low power, and easily portable

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This paper reports support effects of an exoskeleton system for activities of a hand and an upper limb of a healthy person. The support system augments human forces of a hand, a wrist joint and an elbow joint based on bioelectric potential of each muscle so that the upper limb could be assisted by the exoskeleton with a certain rate of wearer’s force. Actuators in the assistive system are replaced with powerful ones to supports human hand, wrist and elbow activities with larger force and torque. Through experiments it was confirmed that a wearer receives physical support from the system for activities of a hand, a wrist and an elbow joint and then we evaluate rate of assistance by comparing the magnitude of the bioelectric potential between under a supported phase and under an unsupported phase.

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This paper discusses about a haptic communication system. Recently the haptic information is attracted attention as the third sense of communication information. And the real world haptics is the key technology for the haptic communication. However, the present approach of the teleoperation system postulates that human touches the remote object via the device like as the remote surgery. Considering using the real world haptics for person-to-person haptic communication tool, the exoskeleton-endoskeleton haptic system is necessary. Thus in this paper, we focus the exoskeleton-endoskeleton haptic system and bilateral control in the human modal space is proposed. The availability of the proposed method is shown by experiments.

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