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Study on Four Disturbance Observers for FO-LTI Systems
1
作者
Songsong Cheng
shengguo wang
+2 位作者
Yiheng Wei
Qing Liang
Yong
wang
《IEEE/CAA Journal of Automatica Sinica》
SCIE
EI
2016年第4期442-450,共9页
This paper addresses the problem of designing disturbance observer for fractional order linear time invariant U+0028 FO-LTI U+0029 systems, where the disturbance includes time series expansion disturbance and sinusoid...
This paper addresses the problem of designing disturbance observer for fractional order linear time invariant U+0028 FO-LTI U+0029 systems, where the disturbance includes time series expansion disturbance and sinusoidal disturbance. On one hand, the reduced order extended state observer U+0028 ROESO U+0029 and reduced order cascade extended state observer U+0028 ROCESO U+0029 are proposed for the case that the system state can be measured directly. On the other hand, the extended state observer U+0028 ESO U+0029 and the cascade extended state observer U+0028 CESO U+0029 are presented for another case when the system state cannot be measured directly. It is shown that combination of ROCESO and CESO can achieve a highly effective observation result. In addition, the way how to tune observer parameters to ensure the stability of the observers and reduce the observation error is presented in this paper. Finally, numerical simulations are given to illustrate the effectiveness of the proposed methods. © 2014 Chinese Association of Automation.
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关键词
Linear
systems
Numerical
methods
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题名
Study on Four Disturbance Observers for FO-LTI Systems
1
作者
Songsong Cheng
shengguo wang
Yiheng Wei
Qing Liang
Yong
wang
机构
Department of Automation
IEEE
Department of Engineering Technology and Department of Software and Information Systems
出处
《IEEE/CAA Journal of Automatica Sinica》
SCIE
EI
2016年第4期442-450,共9页
基金
supported by the National Natural Science Foundation of China(61573332,61601431)
Fundamental Research Funds for the Central Universities(WK2100100028)
文摘
This paper addresses the problem of designing disturbance observer for fractional order linear time invariant U+0028 FO-LTI U+0029 systems, where the disturbance includes time series expansion disturbance and sinusoidal disturbance. On one hand, the reduced order extended state observer U+0028 ROESO U+0029 and reduced order cascade extended state observer U+0028 ROCESO U+0029 are proposed for the case that the system state can be measured directly. On the other hand, the extended state observer U+0028 ESO U+0029 and the cascade extended state observer U+0028 CESO U+0029 are presented for another case when the system state cannot be measured directly. It is shown that combination of ROCESO and CESO can achieve a highly effective observation result. In addition, the way how to tune observer parameters to ensure the stability of the observers and reduce the observation error is presented in this paper. Finally, numerical simulations are given to illustrate the effectiveness of the proposed methods. © 2014 Chinese Association of Automation.
关键词
Linear
systems
Numerical
methods
Keywords
Fractional order linear time invariant(FO-LTI) systems
disturbance observer
reduced order
cascade method
分类号
TP13 [自动化与计算机技术—控制理论与控制工程]
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1
Study on Four Disturbance Observers for FO-LTI Systems
Songsong Cheng
shengguo wang
Yiheng Wei
Qing Liang
Yong
wang
《IEEE/CAA Journal of Automatica Sinica》
SCIE
EI
2016
0
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