Nonlinear Control of a Magnetic Levitation System Using a New Input-Output Feedback Linearization

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• 作者：Santanu Kumar Pradhan^&lowast ; ; ^{skpradhan.nist@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Bidyadhar Subudhi^&lowast ; &lowast ; ; ^{bidyadhar@nitrkl.ac.in" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Magnetic levitation system ; Nonlinear Control ; Feedback Linearization
• 刊名：IFAC-PapersOnLine
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：49
• 期：1
• 页码：332-336
• 全文大小：565 K

文摘

In this paper a nonlinear controller (NLC) is designed for a Magnetic Levitation System (MLS). The proposed NLC uses a new input-output based differential geometry feedback linearization method in conjugation with a linear state feedback controller in outer loop to levitate a ferromagnetic ball. The electromagnetic force, which is a function of input magnetizing current and position of the ferromagnetic material to be levitated by the applied input force, is estimated using real-time experimental data. The simulation results obtained show efficacy of the proposed NLC in comparison to a traditional PID controller.