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Disturbance observer design for nonlinear systems represented by input-output models
journal contribution
posted on 2019-09-23, 08:33 authored by Shihong Ding, Wen-Hua ChenWen-Hua Chen, Keqi Mei, David Murray-smithA new approach to the design of nonlinear disturbance
observers for a class of nonlinear systems described by inputoutput differential equations is presented in this paper. In contrast with established forms of nonlinear disturbance observers,
the most important feature of this new type of disturbance
observer is that only measurement of the output variable is
required, rather than the state variables. An inverse simulation
model is first constructed based on knowledge of the structure
and parameters of a conventional model of the system. The
disturbance can then be estimated by comparing the output of
the inverse model and the input of the original nonlinear system.
Mathematical analysis demonstrates the convergence of this new
form of nonlinear disturbance observer. The approach has been
applied to disturbance estimation for a linear system and a new
form of linear disturbance observer has been developed. The
differences between the proposed linear disturbance observer and
the conventional form of frequency-domain disturbance observer
are discussed through a numerical example. Finally, the nonlinear
disturbance observer design method is illustrated through an
application involving a simulation of a jacketed continuous stirred
tank reactor system
Funding
National Science Foundation of China under Grants 61573170 and 31571571
Jiangsu Natural Science Foundation for Distinguished Young Scholars under Grant BK20180045
Priority Academic Program Development of Jiangsu Higher Education Institutions and the Six Talent Peaks Project in Jiangsu Province under Grant XNYQC-006.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering
Published in
IEEE Transactions on Industrial ElectronicsVolume
67Issue
2Pages
1222 - 1232Publisher
Institute of Electrical and Electronics Engineers (IEEE)Version
- AO (Author's Original)
Rights holder
© IEEEPublisher statement
© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Publication date
2019-02-15Copyright date
2019ISSN
0278-0046eISSN
1557-9948Publisher version
Language
- en
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Prof Wen-Hua ChenUsage metrics
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