Rick_Rarick - CONTROL OF AN ACTIVE MAGNETIC BEARING WITH...

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CONTROL OF AN ACTIVE MAGNETIC BEARING WITH AND WITHOUT POSITION SENSING R ICHARD A. R ARICK Bachelor of Electrical Engineering Cleveland State University May, 1989 Submitted in partial fulfillment of requirements for the degree MASTER OF SCIENCE IN ELECTRICAL ENGINEERING at the CLEVELAND STATE UNIVERSITY August, 2007
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This dissertation has been approved for the Department of Electrical and Computer Engineering and the College of Graduate Studies by ________________________________________________ Date__________ Thesis Committee Chairperson: Dr. Lili Dong Department of Electrical and Computer Engineering ________________________________________________ Date__________ Committee Member: Dr. Daniel Simon Department of Electrical and Computer Engineering ________________________________________________ Date__________ Committee Member: Dr. Charles Alexander Department of Electrical and Computer Engineering
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ACKNOWLEDGEMENTS I would like to express my sincerest gratitude to Dr. Lili Dong for her supervision and encouragement during the course of my studies. Her dedication to education and love of teaching are inspiring; To Dr. Dan Simon for his clear understanding of advanced control theory princi- ples, and for his easy-going, yet careful and precise approach to education and scholar- ship; To Dr. Charles Alexander for introducing me to high-level engineering design, the inner workings of the research community, and especially for his career guidance and contagious optimism; To Dr. Zhiqiang Gao for his discerning philosophical insights into engineering and epistemology, and for introducing me to the concept of active disturbance rejection control which has significantly influenced my approach to control theory; To Dr F. Eugenio Villaseca for his good-natured support and stimulating conver- sations, love of detail, dedication to education, and love of language; To Adrienne Fox and Jan Basch for their competent, efficient, and most impor- tant, friendly assistance in all matters administrative; To Baixi Su-Alexander for his love of language and for the numerous deep and fascinating conversations on all aspects of the human condition; And to all the members of the CSU community for their dedication to the enlight- enment of their fellow humans though the ancient and noble profession of teaching .
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CONTROL OF AN ACTIVE MAGNETIC BEARING WITH AND WITHOUT POSITION SENSING R ICHARD A. R ARICK ABSTRACT This thesis contributes three new applications of existing control designs to the regulation of the position of the rotor (or shaft) in an active magnetic bearing (AMB). Two of the applications use a position sensor, while one does not. The first is an application of the Active Disturbance Rejection Control (ADRC) concept, while the second is a variation on the first using ADRC in conjunction with the technique of integrator backstepping control design. Both of these use a position displacement sensor for feedback to the con- trols. The third is an application of H-Infinity optimal control design without the use of a position sensor. In addition, some other conventional control designs are incorporated into the study for comparison. The performance of the controlled system is assessed in
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Rick_Rarick - CONTROL OF AN ACTIVE MAGNETIC BEARING WITH...

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