Dec 20, 2011

A method for the control of multigrasp myoelectric prosthetic hands

IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society
Skyler A DalleyMichael Goldfarb

Abstract

This paper presents the design and preliminary experimental validation of a multigrasp myoelectric controller. The described method enables direct and proportional control of multigrasp prosthetic hand motion among nine characteristic postures using two surface electromyography electrodes. To assess the efficacy of the control method, five nonamputee subjects utilized the multigrasp myoelectric controller to command the motion of a virtual prosthesis between random sequences of target hand postures in a series of experimental trials. For comparison, the same subjects also utilized a data glove, worn on their native hand, to command the motion of the virtual prosthesis for similar sequences of target postures during each trial. The time required to transition from posture to posture and the percentage of correctly completed transitions were evaluated to characterize the ability to control the virtual prosthesis using each method. The average overall transition times across all subjects were found to be 1.49 and 0.81 s for the multigrasp myoelectric controller and the native hand, respectively. The average transition completion rates for both were found to be the same (99.2%). Supplemental videos demonstrate the virtual prosthesi...Continue Reading

  • References12
  • Citations23

References

  • References12
  • Citations23

Citations

Mentioned in this Paper

Surface Electromyography
Hand
Calibration
Fingers
Kinematics
Electrode
Repeated Rounds of Survey
Motion
Posture brand of calcium phosphate, tribasic
Inotropism

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