Modern Control Of Magnetic Bearing System

Nor Asmah, Mohd Noordin (2008) Modern Control Of Magnetic Bearing System. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Today, magnetic bearings have been introduced into the industrial world as a valuable machine element with quite a number of new features, and increasingly used for a large variety of applications. Their unique features make them attractive for solving rotor-bearing problems in a new way and allow new design approaches for rotating machinery. Magnetic bearings systems are increasingly used in industrial machines such as compressors, turbines, pumps, motors and generators. The advantages by using this system include high reliability, clean environments, high speed applications, and position and vibration control. However, the magnetic bearing system used has limitations where the system is unstable and higher cost needed. In order to avoid this difficulty, this project comes where a state feedback controller will be designed. The project comes with three essential objectives; the firstly is formulate the mathematical model of magnetic bearing system. For the next objective it is design a modern control system that is able to stabilize the position of the rotor of magnetic bearing system. The last one is analyze the performance of the controlled system using MATLAB/ Simulink. For the methodology, it is start by find out the formulation model mathematically and checks the performance of controllability and stability for this system. Next, the magnetic bearing system modeling is built in MA TLAB/ Simulink software. At that moment, the controller is design and analyzes the state feedback controller that.Performance and stability of the controlled system are evaluated and design iterations of the controller are performed until a controller is found which meets the design requirements.

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