Design and Application of an Electromagnetic Induction System Using Multi-sensor Array

By placing an aluminum ring over the core and supply AC currents, causes the ring to jump by an induced current in the ring and produces a magnetic field. In this paper, electromagnetic induction equipment with analog device was implemented and the position of the ring display with 40th LED diodes for educational propose. To control height of ring, the magnetic force acting on the ring has to derive from the current and flux on ring. Several control algorithms are compared in order to prove the proposed method.