Matěj Kuře, Adam Peichl, Jaroslav Bušek, Nejat Olgac, Tomáš Vyhlídal
Non-collocated vibration absorption (NCVA) concept using delayed resonator for in-setup tuning is analyzed and experimentally validated. There are two critical contributions of this work. One is on the scalable analytical pathway for verifying the concept of ”resonant substructure” as the basis of the ideal vibration absorbtion. The second is to experimentally validate the ”spatial and spectral” tunability of NCVA structures for the first time.
For both novelties arbitrarily large dimensions of interconnected mass-spring-damper chains are considered. Following the state of the art on NCVA, control synthesis is performed over the ”resonating substructure” comprising the delayed resonator and a part of the primary structure involved in the vibration absorption. The experimental validation of the proposed NCVA concept is performed on a mechatronic set-up with three interconnected cart-bodies. Based on the spectral analysis , an excitation frequency is selected for which a stable vibration suppression can be achieved sequentially for all the three bodies, one collocated and two non-collocated. The experimental results closely match the simulations for complete vibration suppression at the targeted bodies, and thus validating the crucial ”spatial” tunability characteristic as well as the traditional ”spectral” tuning.
