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Design optimization of a pedaling mechanism for paraplegics

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Abstract

The design optimization of a pedaling mechanism for use by paraplegic persons through functional electric stimulation of paralyzed muscles is described. The objective of the optimization is to enable paraplegics to pedal by use of the limited number of leg muscles accessible to surface stimulation. This is obtained by optimization of a four-bar pedaling mechanism with no “dead points”. As a beneficial side effect of the optimization, an indication of the best stimulation pattern for the muscles is obtained. A prototype of the mechanism is built, and its attractive behavior is explained. It is concluded that the mechanism has indisputable advantages compared with conventional cranks. The next step will be experimental verification with fit people and subsequently with paraplegics.

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Authors and Affiliations

  1. Dept. of Machine Elements and Machine Design, Vienna University of Technology, Getreidemarkt 9/306, 1060, Vienna, Austria

    M. Gföhler  & T. Angeli

  2. Institute of Mechanical Engineering, Aalborg University, Pontoppidanstrade 101, 9220, Aalborg Ost, Denmark

    J. Rasmussen , S.T. Christensen  & M. Damsgaard

Authors
  1. J. Rasmussen
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  2. S.T. Christensen
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  3. M. Gföhler
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  4. M. Damsgaard
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  5. T. Angeli
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Correspondence to J. Rasmussen .

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Rasmussen , J., Christensen , S., Gföhler , M. et al. Design optimization of a pedaling mechanism for paraplegics. Struct Multidisc Optim 26, 132–138 (2004). https://doi.org/10.1007/s00158-003-0324-5

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  • DOI: https://doi.org/10.1007/s00158-003-0324-5

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