STATE-SPACE DESIGN AND CONSTRUCTION OF A MAGNETIC SUSPENSION SYSTEM
STATE-SPACE DESIGN AND CONSTRUCTION OF A MAGNETIC SUSPENSION SYSTEM
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Date
2012-04
Authors
OLALEKAN, RAHEEM AZEEZ
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Abstract
The state space is applied in the design of Magnetic Suspension System, where a
controller is designed with the aim of making the system stable and providing the
performance specifications of settling time less than or equal to 0.5 secs, Maximum
overshot less than or equal to 5 percent and Steady State error less or equal to 1 percent.
A reference input was introduced which help to make steady state error equal to zero
from a value of about 100%. Also an observer is designed which estimate the state
variable that can not be measured. The designed controller had a gain of 9.6, which was
used to determine the gain of the power amplifier used in the system. The designed
controller caused the overshoot and settling time to reduce from undefined values to
4.1% and 0.22 seconds respectively which conformed with the performance
specifications. The observer also made it possible to observe the convergence of the
actual and estimated values of the state variables in less than 0.5 sec. Prototype of
magnetic suspension system was constructed and the system was able to suspend a ball
of mass of 28g at a distance of 1.2cm below the coil.
Description
THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL, AHMADU
BELLO UNIVERSITY ZARIA, IN PARTIAL FULFILMENT OF THE
REQUIREMENTS FOR THE AWARD OF MASTER OF SCIENCE (M.Sc)
DEGREE IN ELECTRICAL ENGINEERING.
Keywords
STATE-SPACE, CONSTRUCTION, MAGNETIC, SUSPENSION, SYSTEM