Object suspended in air by magnetic force –excellent visual impact.
 Controller design to maintain stability.Up-down position setting by reference control.

 Introduction : Magnetic Levitation, lifting of objects under the influence of a magnetic field, 
has numerous application including some advance locomotives designed on the repulsive force 
of a magnet. The present unit, base on the attractive force of an electromagnet, is inherently 
unstable. There is no way to keep an iron object suspended in air by manually adjusting the 
current in the electromagnet. Even a feedback control with forward path gain control alone is 
ineffective. These facts are brought out by studying and experimenting with the dynamics of 
the system. The next task consists of the design of suitable controller and implementing the 
same to achieve the desired objective. A sound knowledge of MATLAB and its availability 
should be highly desirable, though not essential, for the conduct of this experiment. The basic 
theory, analysis and sample calculation are described in the accompanying literature. 

Experiments :

•  To develop the transfer function of the system through laboratory
•  To design/implement PD and lead compensation with different parameter
•  To simulate the system in MATLAB and study in detail various control option and their response.

  Features and Specifications :

•  Object suspended in air by magnetic force
•  Controller design to maintain stability
•  Position changing by reference
•  Built-in power supplies, meters etc
•  220V/50Hz operation 
•  Detailed technical literature included