Finite state control of a variable impedance hybrid neuroprosthesis for locomotion after paralysis.

ABSTRACT: We have previously reported on a novel variable impedance knee mechanism (VIKM). The VIKM was designed as a component of a hybrid neuroprosthesis to regulate knee flexion. The hybrid neuroprosthesis is a device that uses a controllable brace to support the body against collapse while stimulation provides power for movement. The hybrid neuroprosthesis requires a control system to coordinate the actions of the VIKM with the stimulation system; the development and evaluation of such a controller is presented. Brace mounted sensors and a baseline open loop stimulation pattern are utilized as control signals to activate the VIKM during stance phase while simultaneously modulating muscle stimulation in an on-off fashion. The objective is twofold: reduce the amount of stimulation necessary for wa

SUBMITTER: Bulea TC 

PROVIDER: S-EPMC3830532 | biostudies-literature | 2013 Jan

REPOSITORIES: biostudies-literature