PD controller synthesis from open-loop response measurements of rotating system

Autor(es)

Buttini, T. M. ^[1] ; Nicoletti, R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sch Engn Sao Carlos, Dept Mech Engn, BR-13566590 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: IET Control Theory and Applications; v. 6, n. 14, p. 2209-2215, SEP 2012.
• Citações Web of Science: 2

Resumo

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. (AU)

• Processo FAPESP: 09/12276-5 - Sistema de autoidentificação para o controle de vibrações em sistemas rotativos
• Beneficiário: Thiago Malta Buttini
• Modalidade de apoio: Bolsas no Brasil - Mestrado