Computer Science – Performance
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002iaf..confe.464m&link_type=abstract
IAF abstracts, 34th COSPAR Scientific Assembly, The Second World Space Congress, held 10-19 October, 2002 in Houston, TX, USA.,
Computer Science
Performance
Scientific paper
inherent performance in damping is enhanced. Several semi-active vibration suppression approaches have been proposed based on variable-stiffness members, variable-friction devices, or variable-viscosity dampers, and the performance of each of these systems has been studied. The semi-active approach exploits passive energy-dissipation mechanisms, and supplies the system with no additional energy. Semi-active vibration suppression thus ensures that the system is always stable. This is its advantage. However, its performance in vibration suppression is usually inferior to active vibration suppression. have proposed collection of the energy taken from a vibrating system in suppressing its vibration. Using the collected energy to more quickly suppress the vibration is an attractive possibility. Additional energy is still not supplied to the system, and the vibration energy is finally dissipated. Therefore, this is a kind of semi-active approach, and retains the quality of that the system with it is always stable. method of energy-recycling semi-active vibration suppression is described and its performance is demonstrated by an experiment. A five bay truss beam with a piezoelectric transducer was used, and a simple electric circuit with switches was connected to the transducers. Then the switches were controlled by a processor so that the vibration was quickly suppressed by exploiting the collected electric energy. The results of the experiment demonstrated that the performance in vibration suppression of energy-recycling semi-active vibration suppression with actual hardware is much better than that of a traditional semi-active control. The effects of some non-ideal characteristics of real hardware on the performance in vibration suppression are also investigated.
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