Within-socket myoelectric prediction of continuous ankle kinematics for control of a powered transtibial prosthesis
نویسندگان
چکیده
منابع مشابه
Within-socket myoelectric prediction of continuous ankle kinematics for control of a powered transtibial prosthesis.
OBJECTIVE Powered robotic prostheses create a need for natural-feeling user interfaces and robust control schemes. Here, we examined the ability of a nonlinear autoregressive model to continuously map the kinematics of a transtibial prosthesis and electromyographic (EMG) activity recorded within socket to the future estimates of the prosthetic ankle angle in three transtibial amputees. APPROA...
متن کاملActive control of a powered ankle-foot prosthesis
Amputees suffer a higher metabolic demand on their bodies. Passive prostheses seek to reduce this deficit through elastic distribution of the energy inherently dissipated in walking. Yet with no capacity to generate torque they lack truly biomimetic function. The active prosthesis is a solution to this and opens up a world of active control in the timing and magnitude of energy return. Being ab...
متن کاملAn improved powered ankle-foot orthosis using proportional myoelectric control.
We constructed a powered ankle-foot orthosis for human walking with a novel myoelectric controller. The orthosis included a carbon fiber and polypropylene shell, a metal hinge joint, and two artificial pneumatic muscles. Soleus electromyography (EMG) activated the artificial plantar flexor and inhibited the artificial dorsiflexor. Tibialis anterior EMG activated the artificial dorsiflexor. We c...
متن کاملThe AMP-Foot 2.0 : A Powered Transtibial Prosthesis That Mimics Intact Ankle Behavior
Almost all of the transtibial prostheses that are available on the market are purely passive devices. These prostheses store (potential) energy in an elastic element during the controlled dorsiflexion phase of stance and release it right after in order to move the body forward. As a result of this, only the energy which has been stored can be used for push-off and thus for propulsion. There exi...
متن کاملIncreasing ankle push-off work with a powered prosthesis does not necessarily reduce metabolic rate for transtibial amputees.
Amputees using passive ankle-foot prostheses tend to expend more metabolic energy during walking than non-amputees, and reducing this cost has been a central motivation for the development of active ankle-foot prostheses. Increased push-off work at the end of stance has been proposed as a way to reduce metabolic energy use, but the effects of push-off work have not been tested in isolation. In ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Neural Engineering
سال: 2014
ISSN: 1741-2560,1741-2552
DOI: 10.1088/1741-2560/11/5/056027