Abstract
To suppress disturbances in uncertain tracking control systems with an input-delay, a disturbance predictor based on a high-order generalised extended-state observer is devised in this study. A smooth enough approximation of the disturbance is first made, then the approximation ahead of delay-time is predicted. The construction of the disturbance predictor is based on a truncated Taylor polynomial. To facilitate the analysis and design of the closed-loop control system, control gains for the nominal plant are designed in advance. Then the stability analysis for the closed-loop system is conducted, which yields a robust stability condition. As the disturbance predictor takes into consideration the influence of the input-delay, the presented method enables the enhancement of the disturbance-rejection performance. Finally, comparisons of the developed method with major methods in this field are conducted to validate the developed method and to demonstrate its advantages.
| Original language | English |
|---|---|
| Pages (from-to) | 1673-1682 |
| Number of pages | 10 |
| Journal | IET Control Theory and Applications |
| Volume | 12 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2018 Aug 14 |
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ASJC Scopus subject areas
- Control and Systems Engineering
- Human-Computer Interaction
- Computer Science Applications
- Control and Optimization
- Electrical and Electronic Engineering
Cite this
Enhancement of disturbance-rejection performance of uncertain input-delay systems : A disturbance predictor approach. / Yu, Pan; Wu, Min; She, Jinhua; Liu, Kang Zhi; Nakanishi, Yosuke.
In: IET Control Theory and Applications, Vol. 12, No. 12, 14.08.2018, p. 1673-1682.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhancement of disturbance-rejection performance of uncertain input-delay systems
T2 - A disturbance predictor approach
AU - Yu, Pan
AU - Wu, Min
AU - She, Jinhua
AU - Liu, Kang Zhi
AU - Nakanishi, Yosuke
PY - 2018/8/14
Y1 - 2018/8/14
N2 - To suppress disturbances in uncertain tracking control systems with an input-delay, a disturbance predictor based on a high-order generalised extended-state observer is devised in this study. A smooth enough approximation of the disturbance is first made, then the approximation ahead of delay-time is predicted. The construction of the disturbance predictor is based on a truncated Taylor polynomial. To facilitate the analysis and design of the closed-loop control system, control gains for the nominal plant are designed in advance. Then the stability analysis for the closed-loop system is conducted, which yields a robust stability condition. As the disturbance predictor takes into consideration the influence of the input-delay, the presented method enables the enhancement of the disturbance-rejection performance. Finally, comparisons of the developed method with major methods in this field are conducted to validate the developed method and to demonstrate its advantages.
AB - To suppress disturbances in uncertain tracking control systems with an input-delay, a disturbance predictor based on a high-order generalised extended-state observer is devised in this study. A smooth enough approximation of the disturbance is first made, then the approximation ahead of delay-time is predicted. The construction of the disturbance predictor is based on a truncated Taylor polynomial. To facilitate the analysis and design of the closed-loop control system, control gains for the nominal plant are designed in advance. Then the stability analysis for the closed-loop system is conducted, which yields a robust stability condition. As the disturbance predictor takes into consideration the influence of the input-delay, the presented method enables the enhancement of the disturbance-rejection performance. Finally, comparisons of the developed method with major methods in this field are conducted to validate the developed method and to demonstrate its advantages.
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UR - http://www.scopus.com/inward/citedby.url?scp=85051250581&partnerID=8YFLogxK
U2 - 10.1049/iet-cta.2017.1343
DO - 10.1049/iet-cta.2017.1343
M3 - Article
AN - SCOPUS:85051250581
VL - 12
SP - 1673
EP - 1682
JO - IET Control Theory and Applications
JF - IET Control Theory and Applications
SN - 1751-8644
IS - 12
ER -