Nonlinear Controller Design of A Flexible Beam

• Main Authors: Lin, yao-wen, 林耀文
• Other Authors: Liaw Shih-Pin
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/00410649557197120924

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.