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arXiv · 2112.02744

A new active disturbance controller based on an improved fraction-order extended state observer

Bolin Li·Lijun Zhu
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Abstract

This paper proposes a new fraction-order active disturbance rejection controller based on an improved fraction-order extended state observer (IFESO) for a class of fraction-order systems. Applying the IFESO, the fraction-order system can be approximated as an integer-order integrator (1/s). The parameters that ensure the stability of the IFESO and closed-loop system are provided. The frequency-domain analysis shows that the IFADRC has a stronger disturbance estimation performance for the fraction-order system than an integer-order active disturbance rejection controller (IADRC). The simulation results demonstrates that the proposed IFADRC behaves better than the IADRC and the FADRC.

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Bolin Li, Lijun Zhu. 2021-12-06. A new active disturbance controller based on an improved fraction-order extended state observer. https://arxiv.org/abs/2112.02744

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