Vol.6, Special Issue, 2007 pp. 99-110
UDC 550.348.098.64:624.92(045)=111

HIGH-RISE BUILDINGS UNDER EARTHQUAKE EXCITATION: STABILIZATION BY SLIDING-MODE CONTRO
Georgi M. Dimirovski1, Jun Zhao2, Honghai Liu3, Miomir K. Vukobratovic4
1SS Cyril and Methodius University, Faculty of Elec. Eng. & Info. Technologies Rugjer Boskovic b.b., Karpos II, 1000, Skopje, Republic of Macedonia
2Australian National University, Research School of Info. Science & Engineering Department of Information Engineering, Canberra ACT 0200, Australia
3Institute of Industrial Research, University of Portsmouth
4Mihailo Pupin Institute, Laboratory of Robotics & Flexible Automation Volgina 15, Belgrade, 11000, Republic of Serbia
e-mail: gdimirovski@ dogus.edu.tr; jun.zhao@ anu.edu.au; honghai.liu@ port.ac.uk; vuk@ robot.imp.bg.ac.yu

Abstract. Controlling the dynamics of high-rise buildings either to ameliorate the damage or prevent their destruction when subject to an earthquake excitation has been subject of extensive research. All known control designs have advantages and disadvantages as well as operating limits. The application of sliding-mode control to controlling earthquake induced vibrations of a multi-story structural system as an active seismic compensation plus base isolation has been investigated. The achieved performance has been compared to the one of traditional industrial controls, and relevant conclusions drawn. Results of simulation experiments, carried out using El Centro earthquake acceleration, have shown that the sliding mode control can decrease significantly displacements of the floors.
Key words: Earthquake; sliding mode control; structural systems; vibration control

VISOKE ZGRADE POD POBUDOM ZEMLJOTRESA: STABILIZACIJA UPRAVLJANJEM SA KLIZNIM MODUSOM
Upravljanje dinamike visokih zgrada bilo za ublažavanje oštećenja ili za sprečavanje njihovog razaranja kada su podlžne na zemljotresnu pobudu bilo je predemet obimnih istraživanja. Sva poznata projektovanja takvih upravljanja poseduju kako prednosti tako i nedostatke. Ovde se istražuje primena upravljanja sa kliznim modusom za upravljanje zemljotresno pobudjenih vibracija u višespratnoj zgradi kao sistem sa aktivnom kompenzacijom plus izolacija gradjevinske baze. Postignute performance su uporedjene sa onima iz tradicionalnog industijskog upravljanja. Rezultati simulacionih eksperimenata, sprovedenih sa upotrebom registrovane akceleracije cuvenog zemljotresa El Centro, su pokazale da upravljanje sa kliznim modusom moze značajno smanjiti pomeranja spratovima zgrade.
Ključne reči: zemljotres; upravljanje sa kliznim modusom; strukturni sistemi; upravljanje vibracija