Development of a Self-Powered Magnetorheological Damper System for Cable Vibration Control

Abstract

Abstract:A new self-powered magnetorheological (MR) damper control system was developed to mitigate cable vibration. The power source of the MR damper is directly harvested from vibration energy through a rotary permanent magnet direct current (DC) generator. The generator itself can also serve as an electromagnetic damper. The proposed smart passive system also incorporates a roller chain and sprocket, transforming the linear motion of the cable into the rotational motion of the DC generator. The vibration mitigation performance of the presented self-powered MR damper system was evaluated by model tests with a 21.6 m long cable. A series of free vibration tests of the cable with a passively operated MR damper with constant voltage, an electromagnetic damper alone, and a self-powered MR damper system were performed. Finally, the vibration control mechanisms of the self-powered MR damper system were investigated. The experimental results indicate that the supplemental modal damping ratios of the cable in the first four modes can be significantly enhanced by the self-powered MR damper system, demonstrating the feasibility and effectiveness of the new smart passive system. The results also show that both the self-powered MR damper and the generator are quite similar to a combination of a traditional linear viscous damper and a negative stiffness device, and the negative stiffness can enhance the mitigation efficiency against cable vibration.

Experimental Study on Vibration Control of Suspended Piping System by Single-Sided Pounding Tuned Mass Damper

“…Recent decades have seen the rapid development in structural vibration control [16,17], and commonly used techniques include active vibration control [18][19][20], semi-active vibration control [21][22][23][24], passive vibration control [25][26][27][28][29][30], and hybrid vibration control [31][32][33][34][35]. Active and semi-active controls require vibration sensors [36], and due to their advantages of fast response [37], wide availability in different shapes and sizes [38,39], and low cost, piezoceramic transducers are commonly used to sense structural vibrations [40,41].…”

Vibration Control of an Aero Pipeline System with Active Constraint Layer Damping Treatment

“…Passive vibration control has the advantages of a clear damping mechanism, simple structure, no energy input and being easy to implement. However, its control frequency range is narrow, and it can only effectively control high-order vibration frequency [11]. The effect on low-frequency vibration is satisfactory.…”

Adaptive Model Reference Sliding Mode Control of Structural Nonlinear Vibration

“…In concrete structure, yielding of the structural components can also generate hysteretic forces. New energy dissipation devices, such as steel dampers, friction dampers, shape memory alloy dampers, pounding and impact dampers, and magnetorheological dampers, can also bring nonlinear forces into the structure [4][5][6][7][8][9][10][11][12][13]. erefore, the study of structural vibration control considering the hysteretic effect is of great importance.…”