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1 2012

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Selection of Drives for Orthotic Robot Based on Simulation Studies

Bagiński K., Wierciak J.

Machine Dynamics Research

2012

Vol. 36, No. 1

5-14

Orthotic robots seem to be very sophisticated mechatronic devices as they are expected to reflect natural movements of human limbs. Drive systems in such robots are subjected to active, frictional and inertial loads varying significantly. This eliminates possibility of using traditional algorithms of designing drives. When selecting electric drives for robot designed for people with paraplegia a special method was developed and used. It employs computer simulation in two phases of design. First it is used to determine the actual demand for driving torque during the gait cycle. Then, each of the preselected motors is tested by means of simulation in order to verify, whether it meets the formulated functional and operational requirements. In the paper details of simulation software as well as exemplary results of tests are presented.