Abstract
Recent work has demonstrated the use of wave filtering techniques to estimate traveling waves in the time domain. These techniques use PVDF surface mounted sensors in conjunction with a digital filter network to estimate the traveling flexural and extensional waves in beams for band‐limited spectra. The traveling wave estimates are proportional to the power flow in the beam, and thus can be used as the cost function of an active control system. In this paper, experimental results are presented which demonstrate the broad band active control of flexural and extensional power flow in beams using surface mounted piezoceramic control actuators, surface mounted PVDF wave vector filters, and a TMS320C30 based adaptive controller. The results demonstrate flexural and extensional power flow attenuations of 5 to 20 dB for band‐limited excitation. Independent verification of the total beam response before and after control (three dimensional) is found via a technique called experimental spatial dynamics modeling (E...
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call