Fractional Active Disturbance Rejection Control
Document Type
Article
Publication Date
5-2016
Publication Title
ISA Transactions
Abstract
A fractional active disturbance rejection control (FADRC) scheme is proposed to improve the performance of commensurate linear fractional order systems (FOS) and the robust analysis shows that the controller is also applicable to incommensurate linear FOS control. In FADRC, the traditional extended states observer (ESO) is generalized to a fractional order extended states observer (FESO) by using the fractional calculus, and the tracking differentiator plus nonlinear state error feedback are replaced by a fractional proportional-derivative controller. To simplify controller tuning, the linear bandwidth-parameterization method has been adopted. The impacts of the observer bandwidth omega(o) and controller bandwidth omega(c) on system performance are then analyzed. Finally, the FADRC stability and frequency-domain characteristics for linear single-input single-output FOS are analyzed. Simulation results by FADRC and ADRC on typical FOS are compared to demonstrate the superiority and effectiveness of the proposed scheme. (C) 2016 ISA. Published by Elsevier Ltd. All rights reserved.
Repository Citation
Li, Dazi; Ding, Pan; and Gao, Zhiqiang, "Fractional Active Disturbance Rejection Control" (2016). Electrical and Computer Engineering Faculty Publications. 378.
https://engagedscholarship.csuohio.edu/enece_facpub/378
Original Citation
D. Li, P. Ding and Z. Gao, "Fractional active disturbance rejection control," ISA Trans., vol. 62, pp. 109-119, MAY, 2016.
DOI
10.1016/j.isatra.2016.01.022
Volume
62
Comments
This research has been supported by the National Natural Science Foundation of P.R.China (Grant No.61573052).