LMI BASED MIXED H-2/H-infinity STATE-FEEDBACK CONTROL OF CRANE STRUCTURES AGAINST EARTHQUAKE INDUCED VIBRATION


AZELOĞLU C. O. , SAĞIRLI A.

SIGMA JOURNAL OF ENGINEERING AND NATURAL SCIENCES-SIGMA MUHENDISLIK VE FEN BILIMLERI DERGISI, vol.30, no.3, pp.281-291, 2012 (Journal Indexed in ESCI) identifier

  • Publication Type: Article / Article
  • Volume: 30 Issue: 3
  • Publication Date: 2012
  • Title of Journal : SIGMA JOURNAL OF ENGINEERING AND NATURAL SCIENCES-SIGMA MUHENDISLIK VE FEN BILIMLERI DERGISI
  • Page Numbers: pp.281-291
  • Keywords: Mixed H-2/H-infinity state-feedback control, linear matrix inequalities, cranes, earthquake-induced vibration, active vibration control, ACTIVE VIBRATION

Abstract

This paper deals with the active vibration control of cranes against earthquake induced vibration. For this purpose, firstly a dynamic model is developed and then Linear Matrix Inequalities (LMIs) based mixed H-2/H-infinity state-feedback controller is designed in this study. Performance of the designed controller and active vibration control system is investigated by simulation. The time history of ground motion of the Marmara Kocaeli earthquake in 1999 (M-w=7,4), which is a disturbance input, is applied to modeled container crane. Additionally, the performance of the designed controller is also compared with a state-feedback H-infinity controller. Simulation results indicate that superior earthquake induced vibration suppression is achieved by the use of designed controllers and active vibration control system.