Comparative Studies of Semi-active Control Strategies for MR dampers: Pure Simulation and Real-Time Hybrid Testing comparison

This paper presents comparisons of the performances of the newly proposed semi-active control algorithms for use with multiple magnetorheological (MR) dampers. The proposed controllers are the simple passive control, and the decentralized output feedback polynomial control. And traditional clipped optimal control algorithm was used. These controllers use different types of inputs to calculate control signals for the MR dampers using different control mechanisms. In order to investigate the advantages of each controller, a three-degrees-of-freedom system steel moment-resisting frame, designed using a performance-based design methodology, was developed. In order to reliably investigate the performance of the controllers, four different earthquakes were used. The comparisons of the controllers ’ performance were carried out in reduction in maximum interstory drift, displacement, acceleration, and control force throughou