DocumentCode :
1393469
Title :
PD controller synthesis from open-loop response measurements of rotating system
Author :
Buttini, T.M. ; Nicoletti, R.
Author_Institution :
Dept. of Mech. Eng., Univ. of Sao Paulo, São Carlos, Brazil
Volume :
6
Issue :
14
fYear :
2012
Firstpage :
2209
Lastpage :
2215
Abstract :
In this work, a method of computing PD stabilising gains for rotating systems is presented based on the D-decomposition technique, which requires the sole knowledge of frequency response functions. By applying this method to a rotating system with electromagnetic actuators, it is demonstrated that the stability boundary locus in the plane of feedback gains can be easily plotted, and the most suitable gains can be found to minimise the resonant peak of the system. Experimental results for a Laval rotor show the feasibility of not only controlling lateral shaft vibration and assuring stability, but also helps in predicting the final vibration level achieved by the closed-loop system. These results are obtained based solely on the input-output response information of the system as a whole.
Keywords :
PD control; closed loop systems; electric machines; electromagnetic actuators; feedback; frequency response; rotors; stability; D decomposition; Laval rotor; PD controller synthesis; PD stabilising gains; closed loop system; electromagnetic actuators; feedback gains; frequency response function; input output response information; lateral shaft vibration; open loop response measurement; resonant peak; rotating system; stability boundary locus; vibration level;
fLanguage :
English
Journal_Title :
Control Theory & Applications, IET
Publisher :
iet
ISSN :
1751-8644
Type :
jour
DOI :
10.1049/iet-cta.2011.0782
Filename :
6401232
Link To Document :
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