Emg Prosthetic Hand Control System

Artificial hand with myoelectrical control is a new type of dynamic artificial hand and the model "man-machine system" that controlled by biological electricity. Artificial hand with myoelectrical control can reflect sport information of limbs via simply control. Compared with other control ways, it has a lot of superiority. By this reason, it is favored by patient and has wide markets, and now it has became a focus in studying of artificial limbs.What this paper studies is artificial hand with myoelectrical control of single degree of freedom, and the system's feature is with driving of open space and self-adapt organization of power increasing. The focal point of this paper is how to control artificial manus accurately. There are two parts of this work that have been finished: one is to analyses the myoelectric signal and pick up eigenvalue. By utilizing the knowledge of digital circuit and simulation circuit, the system designs the pretreatment dealing circuit of the myoelectrical signal, which has the feature of big input impedance well suppress of public module and high gains. Then the signal is gathered with "zhentong" data gathering after dealing with, and the software of signal processing is explored before the myoelectric signal is analyzed. After picking up eigenvalue, it is proved that the result is unanimous basically with the data of the relevant materials; The other is to control artificial hand by the eigenvalue of the myoelectric signal and at last the system gets very good control results.