The usage of decentralized observers in continuous moving webs

Author

Patri, Thomas ; Wolfermann, Werner ; Schroder, Dierk

Author_Institution

Inst. of Electr. Drive Syst., Tech. Univ. Munchen, Germany

fYear

2001

fDate

18-22 June 2001

Firstpage

147

Lastpage

154

Abstract

This paper presents the usage of decentralized observers in continuous moving webs. First the theory of centralized and decentralized observers and the differences of both kinds observers are shown. This is followed by the usage of decentralized observers shown by Wolfermann. In continuous moving webs the relevant disturbances are two unknown parameters causing errors in the estimated web forces. The first one is the modulus of elasticity, the second one is the friction in the subsystem. Unfortunately these two parameters act on the same location (balance of the torques) in a subsystem. To solve this problem in the observers, a new adaptive decentralized observer is presented in this paper.

Keywords

adaptive control; decentralised control; elasticity; force; observers; paper industry; parameter estimation; adaptive decentralized observer; centralized observers; continuous moving webs; decentralized observers; elasticity modulus; estimated web forces errors; subsystem friction; torques balance; unknown parameters; Coatings; Continuous production; Elasticity; Force measurement; Force sensors; Friction; Inorganic materials; Mechanical sensors; Switches; Textiles;

fLanguage

English

Publisher

ieee

Conference_Titel

Pulp and Paper Industry Technical Conference, 2001 Conference Record of.

Conference_Location

Portland, OR, USA

Print_ISBN

0-7803-6745-6

Type

conf

DOI

10.1109/PAPCON.2001.952962

Filename

952962