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Nonlinear output-feedback speed servo systems through active damping injection and position filtering approaches without current feedback
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Publication Year
2022-07-01
Journal
Journal of Power Electronics
Publisher
Springer
Citation
Journal of Power Electronics, Vol.22 No.7, pp.1199-1208
Keyword
Active dampingNonlinear controlPole-zero cancellationPosition filteringSpeed servo system
Mesh Keyword
Active dampingCurrent feedbackNon linear controlPole zero cancellationPoles-zeros cancellationPosition filteringServo-systemsSpeed servoSpeed servo systemSystems parameters
All Science Classification Codes (ASJC)
Control and Systems EngineeringElectrical and Electronic Engineering
Abstract
This paper proposes a novel current feedback-free speed regulation method for servo systems subject to system parameter and load uncertainties. The proposed solution has two features. First, the position measurement from the rotary encoder constitutes the speed and acceleration estimates for control loops through a position filter with nonlinearly-structured design parameters and without dependence on the system parameters. Second, the proposed controller only requires nominal system parameter information, and stabilizes both the speed and acceleration loops using only position measurements by injecting active damping terms, which leads to pole-zero cancellation. A prototype servo system was built using a 500 W brushless DC-motor-based dynamo. The prototype experimentally validates the effectiveness of the proposed solution in terms of speed tracking and regulation tasks.
ISSN
2093-4718
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/32715
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85130750591&origin=inward
DOI
https://doi.org/2-s2.0-85130750591
Journal URL
https://www.springer.com/journal/43236
Type
Article
Funding
This research was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (Ministry of Science and ICT) (No. NRF-2021R1C1C1004380), and was supported in part by Korea Electric Power Corporation. (Grant number: R21XO01-113).
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Lee, Kyo-Beum이교범
Department of Electrical and Computer Engineering
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