NDLI: Output derivative estimation and disturbance attenuation using PI observer with application to a class of nonlinear systems

Content Provider	IEEE Xplore Digital Library
Author	Shafai, B. Oloomi, H.M.
Copyright Year	2003
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA (Shafai, B.)
Abstract	High-gain observers have been used to estimate derivatives of the output in different applications. These observers have shown great advantages in the design of nonlinear output feedback control of nonlinear systems. However, when disturbances and/or noises are present in the systems, the performance of high-gain observers is degraded. We try to overcome this deficiency by investigating the applicability of proportional integral (PI) observers. A PI observer has successfully been used in LTR design and it has shown the ability of simultaneous estimation of states and disturbances. This paper proposes a new output derivative estimation using a PI observer for certain classes of nonlinear systems. Simulation results demonstrate the robustness of PI observers.
Sponsorship	Lane Dept. Comput. Sci. & Electr. Eng. Electr. & Comput. Eng., WVU Inst. Technol. Adv. Power Eng. Res. Center IEEE Control Syst. Soc. IEEE West Virginia Sect
Starting Page	196
Ending Page	200
File Size	247455
Page Count	5
File Format	PDF
ISBN	0780376978
ISSN	00942898
DOI	10.1109/SSST.2003.1194557
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-03-18
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Attenuation Nonlinear systems Observers Application software Nonlinear control systems Output feedback Control systems Noise robustness Degradation State estimation
Content Type	Text
Resource Type	Article

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