Study on Adaptive-Passive and Semi-Active Eddy Current Tuned Mass Damper with Variable Damping

摘要: Tuned mass damper (TMD) is a widely used vibration control device, consisting of mass, some springs and damping elements. Viscous mostly as element; however, it has many unsustainable problems, e.g., poor durability, sensitive to the change temperature, difficult adjust damping, oil leakage etc. In this paper, new sustainable adaptive-passive eddy current tuned (ECTMD) with variable which very easy be further upgraded semi-active one, proposed. Four important parameters, adsorption position permanent magnets, thickness conductive plate, extra steel plate air gap between magnets are investigated by parametric study. Two evaluation indexes put forward indicate mechanism proposed device. The relationship effective coefficient fitted through quadratic function. Then, corresponding design method adaptive–passive ECTMD presented. At last, previous can its adjusting in real-time, based on linear-quadratic-Gaussian algorithm. effectiveness evaluated harmonic excitations human-induced excitations. results show that better effect than optimized passive one.