Robust disturbance rejection method for uncertain system with disturbances of unknown frequencies

NCUIR > Engineering College > Graduate Institute of Mechanical Engineering > journal & Dissertation > Item 987654321/26889

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/26889

Title:	Robust disturbance rejection method for uncertain system with disturbances of unknown frequencies
Authors:	Chen,YD;Tung,PC;Fuh,CC
Contributors:	機械工程研究所
Keywords:	ADAPTIVE FEEDFORWARD CANCELLATION;PERIODIC DISTURBANCES;ALGORITHMS;SURFACES
Date:	2009
Issue Date:	2010-06-29 18:02:33 (UTC+8)
Publisher:	中央大學
Abstract:	In this paper, we discuss a robust disturbance rejection method for dealing with disturbances of unknown frequencies. Unlike many other approaches, the method proposed here does not require the disturbance frequencies of the separate harmonics to be estimated. The current approach is based on disturbance reduction and disturbance suppression. This novel disturbance reduction controller consists of an inverse of the nominal model with an input deduction and a high gain integral term. The proposed controller can reduce both periodic and nonperiodic unknown disturbances with uncertainties in both stable and unstable systems. In addition, undesired responses caused by residual disturbances and residual modeling uncertainties are suppressed by combining the novel disturbance reduction controller with a sliding mode controller. The simulation results demonstrate that the proposed disturbance rejection method performs well under different disturbance inputs including random signals.
Relation:	NONLINEAR DYNAMICS
Appears in Collections:	[Graduate Institute of Mechanical Engineering] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	361	View/Open

社群 sharing