This contribution concerns the use of a supervisory expert system based on
fuzzy logic for the parameter adjusting of myoelectric prostheses. The pros
thesis system is an artificial arm produced by INAIL in Vigorso (Bologna, I
taly), which is equipped with an on-board actuation system. The expert syst
em guides patients through an interactive session whose aim is to test the
prosthesis functionality and, when necessary, to self-adjust the parameters
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