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The most common technique for satellite attitude control assumes the use of rotating mechanical parts on-board. Traditionally such a system consists of one to four Reaction Wheels or Control Moment Gyroscopes. Control of the satellite orientation can be done by acceleration of the proper wheel around its axis of rotation. The attitude of the satellite changes according to the conservation of angular...
Stroke is the third most common cause of death and the commonest cause of chronic disability, and its effects can reflect in disabilities of many activities of daily life and in losses of brain functions. The mechanisms subtending post-stroke recovery are complex and operating at different levels, from molecular to synaptic and network reorganization. This reorganization largely subtends clinical...
This article presents the design optimization of an 8-pole permanent magnet rotor of a reaction sphere actuator. The optimization of design parameters is carried out to minimize the rotor magnetic flux density distortion given constraints on the strength of the rotor flux and on the mass. Finally, experimental measurements on the manufactured rotor are reported showing a strong correspondence with...
The performance of motor neuroprostheses or robotic arm prostheses can be significantly improved by delivering sensory feed-back related to the ongoing motor task (e.g. the slippage of an object during grasping). Microfabricated neural electrodes implantable in peripheral nervous system seem a promising approach to this aim. New generation of thin-film intrafascicular electrodes longitudinally implantable...
The possibility of controlling dexterous hand prostheses by using a direct connection with the nervous system is particularly interesting for the significant improvement of the quality of life of patients, which can derive from this achievement. Among the various approaches, peripheral nerve based intrafascicular electrodes are excellent neural interface candidates, representing an excellent compromise...
In human space flight, astronauts are the most precious "payload" and astronaut time is extremely valuable. Astronauts operate under unusual and difficult conditions since the absence of gravity makes some of simple tasks tedious and cumbersome. Therefore, computer interfaces for astronauts are generally designed first for safety and then for functionality. In addition to general constraints...
The development of hybrid neuroprosthetic systems (HBSs) linking the human nervous system with artificial devices is an important area of research that is currently addressed by several groups to restore sensorimotor function in people affected by different disabilities. It is particularly important to establish a fast, intuitive, bidirectional flow of information between the nervous system of the...
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