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A mechanical hand with automatic proportional control of prehension

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Summary

A mechanical hand with automatic proportional control of prehension has been developed. Hand operation requires only single switching by the amputee for opening or closing. Once contact pressure has been made on the object, attempts to lift it result in slippage. Slippage is detected between the thumb, which contains the control sensor for automatic proportional control of grasp and the first and second fingers. This control is contained in a closed loop system incorporating the hand, motor, piezoelectric crystal, and associated electronics, and is independent of the amputee. The amputee, however, may override this system at any time, simply by activating the single opening and closing switch.

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Authors and Affiliations

  1. Walter Reed Army Medical Center, U.S. Army Medical Biomechanical Research Laboratory, 20012, Washington, D.C.

    Lloyd L. Salisbury & Albert B. Colman

Authors
  1. Lloyd L. Salisbury
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  2. Albert B. Colman
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Salisbury, L.L., Colman, A.B. A mechanical hand with automatic proportional control of prehension. Med. & biol. Engng. 5, 505–511 (1967). https://doi.org/10.1007/BF02479145

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  • DOI: https://doi.org/10.1007/BF02479145

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