A principle of operation of a magnetic levitation system is quite simple. If you sense that the magnet is moving down because of gravity pull it up by the attractive force of electromagnet. If you sense that the magnet is moving up because of the force of electromagnet reduce the attractive force of electromagnet so that it moves down. Now you keep doing it continuously so minutely and fast that human eye perceive that the magnet is floating in mid air. Actually the magnet is moving up and down very fast at very small displacement. If you continue to attract the magnet using the electromagnet it will continue to move up and finally stick to electromagnet. So as soon as you sense that the magnet is moving up you reduce the current in electromagnet so that its attractive force decreases. Now as the magnet starts to drop down you increase the current in the coil so that its attractive force increases and you pull it back.
No comments:
Post a Comment