Dynamics and Control for a Bernoulli-Euler Beam Fixed on a Moving Cart

• Main Authors: Wei-Shih Chao, 趙尉世
• Other Authors: J Lin
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/43403079227053331433

碩士 === 清雲科技大學 === 機械工程研究所 === 95 === This thesis deals with active damping control problems of elastic beam fixed on a moving cart. Therefore, the motion and control of Bernoulli-Euler beam fixed on a moving cart will be analysis in this study. The moving cart is mounted on the linear motion stage system. This research develops an innovative approach for achieving a high performance adaptive piezoelectric absorber. The controller has two separate feedback loops for positioning and damping, and the damping controller is independent of liner motion stage positioning control. Due to the adaptive capability of fuzzy inference systems, its applications to adaptive control and learning control are immediate. For this purpose, the adaptive network-based fuzzy inference system has been used to optimize the fuzzy IF-THEN rules and the membership functions to derive a more efficient fuzzy control. Simulation and experimental validation of the ball-screw mechanism demonstrate the effectiveness of the PD and fuzzy controller. Consequently, the propose control methodologies demonstrate the structural vibration reduction using collocated piezoelectric actuator/sensor pairs.