01-12-2012, 06:18 PM
BIONIC HAND
BIONIC HAND.pptx (Size: 3.25 MB / Downloads: 116)
REQUIREMENTS
Cosmetics
Controllability
Noiselessness
Lightness
Low energy consumption
WORKING
Two electrodes are positioned to pick up signals.
Control unit processes the signals.
This prosthetic hand uses individual servomotors for each under-actuated finger
Pressure and strain gauges provide feedback to indicate contact with an object and bend position.
Power source
10V Lithium ion battery
Twice capacity than Nickel-Cadmium battery
Weighs 25% less
15 % greater voltage
Situated in arm cavity
Easy to remove and recharge
ADVANCED FEATURES
Individual motor
Proportional speed control
Thumb positioning
Auto grip
Foldaway finger limbs
A soft palm
Soft finger pads and wider thumb profile
ABILITIES
Grabbing a paper cup without crushing
Turning a key in a lock
Pressing buttons on a cellphone or keyboard
Ideal handshake
Hold wieght ~ 90kg
Grip to hold or pick precise object
CONCLUSION
The bionic design approach can lead to the development of prostheses that can replicate natural hand.
Handling potentially difficult tasks.
A ray of hope for handicapped.