- Title
- An Improved Active Disturbance Rejection Control for Bode's Ideal Transfer Function
- Creator
- Li, Bolin; Zhu, Lijun; Chen, Zhiyong
- Relation
- IEEE Transactions on Industrial Electronics Vol. 71, Issue 7, p. 7673-7683
- Publisher Link
- http://dx.doi.org/10.1109/TIE.2023.3303631
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- journal article
- Date
- 2024
- Description
- This article presents an improved fractional-order active disturbance rejection control (iFO-ADRC) scheme to approximately render the open-loop transfer function of a high-order uncertain system to a weighed Bode's ideal transfer function (wBITF). The proposed feedback controller in this scheme is called iFO-ADRC-wBITF and abbreviated to iFO-BITF, which inherits the advantages of ADRC and wBITF and improves a system's robustness to open-loop gain variation and system uncertainty. As a core component of iFO-ADRC, an improved fractional-order extended state observer (iFO-ESO) can reduce the number of system states to be estimated and hence improve the performance of a closed-loop system. Frequency-domain analysis shows that iFO-ESO has better estimation performance than the typical FO-ESO in the literature. Compared with the conventional integer-order ADRC and the fractional-order controller for achieving BITF, the proposed iFO-BITF has a simpler form, better transient performance, and more robustness against parameter variation, as demonstrated in time-domain simulation. The proposed iFO-BITF is applied to a permanent magnet synchronous motor servo control system to demonstrate its capability in a real-world application.
- Subject
- active disturbance rejection control; bode's ideal transfer function; extended state observer; fractional calculus
- Identifier
- http://hdl.handle.net/1959.13/1504258
- Identifier
- uon:55484
- Identifier
- ISSN:0278-0046
- Language
- eng
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