Force touch sensation feedback and force intensity control method of mechanical artificial hand based on myoelectric control

The invention provides a force touch sensation feedback and force intensity control method of a mechanical artificial hand based on myoelectric control, which comprises the following steps: installing two myoelectric signal collection electrodes which are pasted on the body surface of a muscle activity region of a disabled arm of the human body; respectively collecting finger opening and closing myoelectric signals which are directly proportional to the muscle tensioning degree; inputting the collected signals into a single chip; carrying out section quantification according to different magnitude values; outputting different section signals; driving a miniature DC motor through a motor driving circuit; outputting section speed values corresponding to the section quantification of the finger clamping force intensity through the rotation of the miniature DC motor via a gear transmission mechanism; and at the same time, installing a force touch sensation sensor at the finger end of a thumb of the artificial hand. When the finger is closed, the force touch sensation sensor is squeezed for outputting force touch sensation signals which are fed back to the single chip to be correspondingly compared to a force intensity section quantification value set by program. The single chip continuously regulates signals output to the motor driving circuit for driving the rotation speed of the miniature DC motor to be correspondingly changed, so the finger opening and closing speed is correspondingly changed until the affiliated section clamping force intensity conforming to the set requirements is reached.