Abstract

Magnetic Levitation System (MLS) is an example of a non-linear and inherently unstable system. To overcome this instability an electromagnet will have to be constructed. The current in the electromagnetic coil is to be varied suitably using a compensator to generate varying magnetic field and hence a varying force to be exerted on any object in its vicinity. Two approaches were followed to design compensator. Firstly Root locus approach where in the pole in unstable region is moved to stable region. Another approach is Inward approach where in the poles are placed at desired location & co-efficient of compensator are obtained.

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