Gadelovits, S., Zhong, Q.C., Konstantopoulos, G.C. orcid.org/0000-0003-3339-6921 et al. (1 more author) (2017) Design of a UDE Frequency Selective Filter to Reject Periodical Disturbances. In: IFAC-PapersOnLine. 20th IFAC World Congress, 09 Jul - 14 Sep 2017, Toulouse, France. Elsevier , pp. 7824-7829.
Abstract
In this paper a new filter design for the Uncertainty and Disturbance Estimator (UDE) is proposed to reject periodical disturbances when a limited bandwidth is required for the control output. The motivation comes from several applications where the system actuator may introduce a bandwidth limitation, as a result of internal delays, or when the actuator itself is a limited bandwidth closed-loop system. When the traditional UDE approach is applied in these systems, the stability requirements impose a limitation over the effective bandwidth of the UDE filter and therefore disturbances cannot be fully rejected by the filter. In the case where the expected disturbance is periodical with a known fundamental frequency, the proposed UDE filter is designed as a chain of filters to match selected bands of the expected disturbance spectrum and fully reject them while maintaining the desired stability margins. A design example of a power inverter application is investigated and extensive simulation results are provided to verify the proposed UDE filter design.
Metadata
Item Type: | Proceedings Paper |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2017, IFAC (International Federation of Automatic Control). This is an author produced version of a paper subsequently published in IFAC-PapersOnLine. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/) |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Automatic Control and Systems Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 08 Dec 2017 14:09 |
Last Modified: | 09 Dec 2017 12:59 |
Published Version: | https://doi.org/10.1016/j.ifacol.2017.08.1059 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.ifacol.2017.08.1059 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:124521 |