E. Garcia et al., PASSIVE AND ACTIVE CONTROL OF A COMPLEX FLEXIBLE STRUCTURE USING REACTION MASS ACTUATORS, Journal of vibration and acoustics, 117(1), 1995, pp. 116-122
Passive and active control have been performed on a flexible structure
possessing complex modal behavior. Specifically, the structure has cl
osely spaced modes which created a ''beat phenomena'' in the structure
's vibrations. Reaction mass actuators (RMAs) were used to suppress th
e structural vibrations with both passive and active control schemes.
The results of using both types of control systems were compared both
analytically and experimentally. It was determined that, although pass
ive tuning of the RMAs did suppress the structure's vibrations, additi
onally applying active control to the optimally tuned RMAs did not sig
nificantly increase the system's vibration suppression performance. Ho
wever, by choosing the actuator's characteristics from active control
considerations, an active strategy utilizing a local velocity feedback
controller suppressed structural vibrations and reduced the active sy
stem's settling time to 20 percent of the settling time with passive d
amping. Both the passive and the active control were found to be a sig
nificant improvement over the structure's open-loop response.