Vibration Control of Buildings Using Magnetorheological Damper: A New Control Algorithm

Abstract

This paper presents vibration control of a building model under earthquake loads. A magnetorheological (MR) damper is placed in the building between the first floor and ground for seismic response reduction. A new control algorithm to command the MR damper is proposed. The approach is inspired by a quasi-bang-bang controller; however, the proposed technique gives weights to control commands in a fashion that is similar to a fuzzy logic controller. Several control algorithms including decentralized bangbang controller, Lyapunov controller, modulated homogeneous friction controller, maximum energy dissipation controller, and clipped-optimal controller are used for comparison. The new controller achieved the best reduction in maximum interstory drifts and maximum absolute accelerations over all the control algorithms presented. This reveals that the proposed controller with the MR damper is promising and may provide the best protection to the building and its contents.

Performance enhancement of wind turbine systems with vibration control: A review

“…The contribution of ER/MR damper in structural vibration control is significant [95][96][97][98]. The usefulness of these damping devices has also influenced the researchers to implement them in wind turbine technology for optimization purpose.…”

Technical Note: Active and Semi-Active Strategies to Control Building Structures Under Large Earthquake Motion

“…For instance, Aly [2013] proposed an algorithm inspired by a quasi-bang-bang controller for seismic response reduction, using only one MR damper that is placed in the building between the first floor and ground. In the study, several control algorithms-including decentralized bang-bang controller, Lyapunov controller, modulated homogeneous friction controller, maximum energy dissipation controller, and clipped-optimal controller-are used for validation purposes; Chae et al [2012] evaluated four different semi-active control algorithms (LQR, SMC, DBB, and PAC) in the controlled seismic response of a 3-storey steel frame building using large-scale MR dampers.…”

Magnetorheological Damper for Performance Enhancement Against Seismic Forces

“…Many studies have been carried out considering different number of coil, different piston shape, [1] optimized MR damper using finite element analysis for different configurations of MR damper piston, MR fluid gap, and Dampers housing. The performance of MR damper with various piston configuration is found in the single coil with fillet end which gives better result.…”