On active surge control of compressors using a mass flow observer

Author

Bøhagen, Bjørnar ; Gravdahl, Jan Tommy

Author_Institution

Dept. of Eng. Cybern., NTNU, Trondheim, Norway

Volume

4

fYear

2002

fDate

10-13 Dec. 2002

Firstpage

3684

Abstract

A globally exponentially stable (GES) observer for the mass flow in a compression system is proposed. Further, a previously proposed active surge control scheme is shown to be GES. This nonlinear control scheme employs the drive torque of the compressors drive unit as the control variable in an active surge control system. The controller is based on feedback from mass flow. It is desirable to avoid this measurement as it is both inaccurate and expensive. Using a nonlinear separation principle, the total system is shown to be globally asymptotically stable (GAS). The results are supported by simulations.

Keywords

asymptotic stability; compressors; feedback; nonlinear control systems; observers; torque control; active surge control; compression system; compressors; controller; drive torque; feedback; globally asymptotically stable system; globally exponentially stable observer; mass flow observer; nonlinear control; nonlinear separation principle; Compressors; Control systems; Cybernetics; Feedback; Nonlinear control systems; Recycling; Surges; Torque control; Valves; Weight control;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 2002, Proceedings of the 41st IEEE Conference on

ISSN

0191-2216

Print_ISBN

0-7803-7516-5

Type

conf

DOI

10.1109/CDC.2002.1184936

Filename

1184936