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EMG controlled prosthetic arm
Final project in practical engineering of Joan Sabage, Guy Shachar Tal Hananel at ORT Harmelin College - Mechatronic department. In 2010, the project was directed by Quickest Owl.
The prosthetic arm was controled by EMG (Electromyography - small currents generated during muscle contraction). The arm is intended for use of
below the elbow amputees. With 8 electrodes in different areas on the body of the user, we sampled the user muscle contraction. According to the various contractions , the prosthetic arm performed operations of opening, closing and yawing of the hand . The arm is designed to be of normal weight. The Arm is operated with a pair of rc servo motors, and controlled
by PIC 16f877A.
There are two arm control loops:
User - vibration motor which gives an indication to the user about the pressure of the fingers
System control - using current sensors we control the power used by motors in order not exceed the motors limits
The poject won first prize in an anual national competition.