Performance and robustness of lowpass filter feedback for already-established control system
- Authors
- Choi, Y.; Moon, H.
- Issue Date
- Mar-2010
- Publisher
- Institute of Electrical Engineers
- Citation
- Electronics Letters, v.46, no.6, pp.408 - U44
- Indexed
- SCIE
SCOPUS
- Journal Title
- Electronics Letters
- Volume
- 46
- Number
- 6
- Start Page
- 408
- End Page
- U44
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/39928
- DOI
- 10.1049/el.2010.3535
- ISSN
- 0013-5194
- Abstract
- When a closed-loop control system is already established but its control performance is not satisfactory, there is a need either to change a closed-loop controller itself or to insert an additional compensator into an already-established control system in order to satisfy a desired control specification. A simple control performance improvement method is proposed by attaching only a lowpass filter feedback to the already-established closed-loop control system. The lowpass filter feedback is interpreted as an integral controller and a lead compensator. Its performance and robustness properties are discussed.
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