Noise sensitivity and stability properties of low gain antiwindup PI-control

Author

Glattfelder, A.H. ; Todtli, J. ; Schaufelberger, W.

Author_Institution

Autom. Control Lab., ETH Zentrum, Zürich, Switzerland

fYear

1999

fDate

Aug. 31 1999-Sept. 3 1999

Firstpage

3508

Lastpage

3513

Abstract

Antiwindup feedback (awf) with high gain tends to perform better than with low gain for large deterministic disturbances, but it is also more sensitive to high frequency measurement noise. This is investigated here on a control loop for a dominant first order plant and a basic PI-awf structure, from which the most common forms of PI-aw-regulators can be generated. Both an estimate is given for the steady state control error due to noise, and stability and performance are investigated as functions of the awf gain, and a design and sizing procedure is proposed.

Keywords

PI control; control nonlinearities; feedback; measurement errors; measurement uncertainty; stability; PI-aw-regulator; PI-awf structure; antiwindup feedback; awf gain; control loop; deterministic disturbance; first order plant; frequency measurement noise; low gain antiwindup PI-control; noise sensitivity; sizing procedure; stability property; steady state control error; Actuators; Asymptotic stability; Noise; Noise measurement; Regulators; Stability analysis; Steady-state; Pi-regulators; antiwindup; circle test; measurement noise sensitivity; nonlinear stability analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (ECC), 1999 European

Conference_Location

Karlsruhe

Print_ISBN

978-3-9524173-5-5

Type

conf

Filename

7099873