| Summary: | 碩士 === 國立海洋大學 === 機械與輪機工程學系 === 86 === Due to their fast response and low energy consumption,
light-weight structures are widely employed in certain areas ,
such as aeronautic and aerospace industries. However, since
the stiffness and damping coefficient are lower for these
structures, passive and/or active vibration suppression
methods need to be introduced to reduce the vibrations when
such structures undergo movements.
A flexible beam rotating around one end and driven by a DC
servo-motor was used to study the effects of reducing the beam
vibration by using the same DC motor that rotates the beam.
A strain gague was cemented to the root of the cantilevered
beam as sensor to detect the first vibration mode. Several
design methods , which include variable structure control and
feedback linearization control , were used to develop control
algorithms . Finally , different control algorithms were
implemented in a pc-based control system to study the
feasibility of the proposed control scheme and to compare the
performance of different control algorithms through
experiment.
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