Dj. Pines et Ah. Vonflotow, SPATIALLY CONVOLVING WAVE SENSORS FOR STRUCTURAL CONTROL - PART II - EXPERIMENTAL-VERIFICATION USING PVDF SENSORS, Journal of intelligent material systems and structures, 8(12), 1997, pp. 1059-1072
This paper attempts to confirm experimentally, an approach for sensing
actual disturbance information which can propagate along one-dimensio
nal structural waveguides. In this work, a polyvinylidene fluoride-PVD
F distributed wave sensing scheme is reported which exploits the chara
cterization of 1-dimensional structural motion in terms of traveling w
aves. Design and manufacture of a spatially convolving wave sensor is
discussed. This spatially convolving wave sensor is then used on an ex
perimental test beam to control structural vibration using a feedforwa
rd control law. Experimental results indicate that the sensor is capab
le of sensing directional wave propagation dynamics. In addition, acti
ve vibration suppression can be achieved over several modes of the str
ucture using a feedforward control law.