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A Study on an Application of Disturbance Observer Controller to Nonlinear Electro-magnetic Suspension Systems외란관측기 제어기의 비선형 자기부상시스템적용에 관한 연구
- Other Titles
- 외란관측기 제어기의 비선형 자기부상시스템적용에 관한 연구
- Authors
- 조남훈
- Issue Date
- May-2018
- Publisher
- Institute of Control, Robotics and Systems
- Keywords
- Double quench; Peak fault current; Superconducting fault current limiter (SFCL); Transformer type SFCL
- Citation
- Journal of Institute of Control, Robotics and Systems, v.24, no.5, pp.417 - 422
- Volume
- 24
- Number
- 5
- Start Page
- 417
- End Page
- 422
- ISSN
- 1976-5622
- Abstract
- Disturbance observer (DOB) controllers have been widely employed since they have the powerful ability of disturbance attenuation and uncertainty compensation. However, it is difficult to design a nonlinear DOB controller for nonlinear plants. This paper studies the robust stability of nonlinear plants controlled by linear DOB controllers. Using the case study of an electro-magnetic suspension (EMS) system, we studied the effects of nominal model selection on the robust stability of the linear DOB controller. We discuss two effects on robust stability: 1) The high-frequency gain of the nominal model and 2) The pole location of the nominal model.
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Related Researcher
- Jo, Nam Hoon
- College of Engineering (School of Electrical Engineering)