Active mass damper operated by CPG and PD controller

(Extraction of CPGs synchronized with external input and generation of target displacement for auxiliary mass)

Abstract

This paper proposes a new method on how to absorb the vibration energy of a single-degree-of-freedom structure by using an active mass damper operated by a position controller and neural oscillators with a multilayered structure. The proposed system having the single neural oscillator has not adapted successfully to parameter changes of the structure. On the other hand, recent studies in biology have demonstrated that multiple oscillators have hierarchical network structures to ensure adaptation to environmental changes. Thus, in order to improve the robust performance of the AMD system, the target value of the AMD mass is generated using a neural oscillator network synchronized with earthquake-induced acceleration responses of structure. As a result, the new proposed system can obtain higher vibration suppression performance than the conventional system. And numerical simulation showed that vibration control of the structure was performed appropriately even after changing parameters of the structure.