NDLI: H/sub 2/ and H/sub /spl infin// control applied to an electromagnetically levitated vehicle

Content Provider	IEEE Xplore Digital Library
Author	Bittar, A. Moura Sales, R.
Copyright Year	1997
Description	Author affiliation: Electron. Eng. Dept., Sao Paulo Univ., Brazil (Bittar, A.)
Abstract	Several magnetically levitated transport systems have been constructed, tested and constantly improved. Various technologies for the magnetic levitation system are also being developed and some of them use electromagnets for the vehicle levitation. In this work, an electromagnetically levitated vehicle prototype is studied. The vehicle levitation is achieved through the control of the gaps of these electromagnets. The constructed prototype will have independent levitation and propulsion systems; this paper considers only the magnetic levitation system. The resultant system is open loop unstable and highly nonlinear with a very restrictive equilibrium region. A SISO analytical model and closed loop identification experiments are also presented. The emphasis in this paper is related to design procedures of H/sub 2/ and H/sub /spl infin// controllers applied to the electromagnetic levitation system. For the designs of these controllers, a weighting function is employed to attenuate a resonance peak at low frequencies in the closed loop system. The results show that closed loop system responses with the H/sub 2/ and H/sub /spl infin// controllers are very similar but with better performance than the response obtained with a classical theory controller.
Starting Page	773
Ending Page	778
File Size	526731
Page Count	6
File Format	PDF
ISBN	0780338766
DOI	10.1109/CCA.1997.627753
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-10-05
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vehicles Magnetic levitation Control systems Electromagnets Prototypes Open loop systems Closed loop systems System testing Propulsion Analytical models
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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