Journal of Structural and Construction Engineering

Journal of Structural and Construction Engineering

Phase motion predictive control for a structure equipped with MR dampers

Document Type : Original Article

Authors
Hosein Ghaffarzadeh
Alireza Aran
Fatemeh Javadi Amoodizaj
Faculty of Civil Engineering, University of Tabriz, Tabriz. Iran
10.22065/jsce.2024.451732.3388
Abstract
Semi-active control systems have attracted the attention of researchers due to their intelligent performance, high reliability, and the little energy needed to perform the control process. Magnetorheological(MR) dampers are one of the control tools of these systems, which lead to the reduction of structural responses by adjusting the damping at any moment. To make the control tools function properly, various algorithms and control laws have been presented. In this research, the skyhook, groundhook, phase control, and motion around equilibrium control laws were utilized to investigate the phase motion of the structure. In the proposed algorithm of this research, the control force required in the future time was estimated by predicting the phase motion of the structure in the current time. This was done by predicting the ground acceleration with constant and linear acceleration models. The proposed algorithm was tested on an 8-story structure equipped with MR dampers with the Bouc–Wen model, under the vibration of two specific records of the Loma-Prieta and Northridge earthquakes. The results of the investigation illustrated that the phase motion predictive algorithm is successful in reducing the responses of the structure. Also, due to providing expected results and less complexity, using the constant acceleration model is preferred compared to the linear acceleration model.
Keywords
Semi-active Control
MR Damper
Skyhook
Groundhook
Phase Control
Predictive Control

Subjects

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  • Receive Date 27 April 2024
  • Revise Date 06 August 2024
  • Accept Date 17 September 2024