Zeus Hand van Aether Biomedical, distributeur Loth Fabenim B.V.
EN
Zeus Hand Configurator - Web Application Instructions
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Prosthesis Settings Tab
12
Speed Control Strategy
In this section, there are 2 options for the speed and strength of the hand:
One speed
Proportional
Proportional control means that speed of the hand is proportional to the
patient’s EMG signal strength. In this mode the patient has to contract his
muscles stronger to move the fingers of the prosthesis faster. There are three
achievable speeds; each of them is applied to the prosthesis fingers after
exceeding a certain EMG strength threshold.
One speed control means that once the threshold has been passed, the speed
of the hand is always at the same level regardless of the EMG signal strength.
The threshold can be changed in the settings.
Grip switching modes
This section allows the user to select the type of the signal used to change the
grip. This can either be:
Co-contraction (default) is the simultaneous contraction of both muscles
used to control the prosthesis. By default, if the co-contraction is shorter
than 0.5s, then it is treated as the primary Change Signal.
Longer co-contractions act as Secondary Change Signal. The timing
that defines the short and long co-contraction can be changed in the
software.
Open-open grip change signal is the sequence of two quick contractions
of a muscle used to open the prosthesis. By default if the time between
two such contractions is shorter than 0.5s, it will activate the Change
Signal. To achieve a Secondary Change Signal, the user needs to perform
three muscle contractions in a sequence (open-open-open).