Magnetorheological (MR) dampers are a promising alternative structural active actuators as they provide adjustable damping over a wide range of frequencies without large power requirements. However, the complex dynamics that characterizes these devices makes it difficult to formulate control laws based on the MR damper model. Instead, many semiactive control strategies proposed in the literature have been based on the idea of ”clipping” the voltage signal so that the MR damper force ”tracks” a desired active control force which is computed on-line. With this idea many algorithms have been proposed using, among others, techniques such as optimal control, H∞ control,sliding mode control, backstepping and QFT. This work presents a semiactive control strategy based on the same idea of ”clipping” the voltage signal but using a simpler PI design. The proportional and integral gains of the controller are calculated so that the controller guarantees stability, minimization of the closed loop response and robustness against modeling errors. Effectiveness of the control strategy is compared to some others techniques and passive cases as well. Simulation results shows that this simple strategy can effectively improve the structural responses and achieve performance index comparable to that of more complex algorithms. ; Postprint (published version)


    Zugriff

    Download


    Exportieren, teilen und zitieren




    Semiactive Coulomb Friction Lead-Lag Dampers

    Sargent, D Caleb | Online Contents | 2010


    Semiactive coulomb friction lead-lag dampers

    Bauchau, Oliver A. / Weddingen, Yannick van / Agarwal, Sandeep | Tema Archiv | 2010


    Semiactive control of a base isolated building using magnetorheological dampers

    Zapateiro,M. / Luo,N. / Karimi,H.R. et al. | Kraftfahrwesen | 2009


    Semiactive Vibration Suppression with Electrorheological-Fluid Dampers

    Junjiro Onoda / Hyun-Ung Oh / Kenji Minesugi | AIAA | 1997