Robust State-and-Disturbance Observer Design for Linear Non-minimum-phase Systems

CCUR > College of Natural Science and Engineering > College of Engineering > Department of Mechanical Engineering > journal articles > Item 987654321/35913

Please use this identifier to cite or link to this item: https://irlib.pccu.edu.tw/handle/987654321/35913

Title:	Robust State-and-Disturbance Observer Design for Linear Non-minimum-phase Systems
Authors:	Chen, MS (Chen, Min-Shin) Lin, SY (Lin, Shih-Yu) Tseng, ML (Tseng, Ming-Lei) Yeh, YL (Yeh, Yi-Liang) Yen, JY (Yen, Jia-Yush)
Contributors:	機械系
Keywords:	Robust observer unknown disturbance frequency shaping control design
Date:	2016-05
Issue Date:	2017-04-14 10:41:11 (UTC+8)
Abstract:	When there are external disturbances acting on the system, the conventional Luenberger observer design for state estimation usually results in a biased state estimate. This paper presents a robust state and disturbance observer design that gives both accurate state and disturbance estimates in the face of large disturbances. The proposed robust observer is structurally different from the conventional one in the sense that a disturbance estimation term is included in the observer equation. With this disturbance estimation term, the robust observer design problem is skillfully transformed into a disturbance rejection control problem. We then can utilize the standard H control design tools to optimize the robust observer between the disturbance rejection ability and noise immune ability. An important advantage of the proposed robust observer is that it applies to both minimum-phase systems and non-minimum phase systems.
Relation:	ASIAN JOURNAL OF CONTROL 卷: 18 期: 3 頁碼: 1135-1141
Appears in Collections:	[Department of Mechanical Engineering ] journal articles

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	198	View/Open

View Licence