The Robust of Various controllers for Active Vibration Suppression Mechanism

• Main Authors: I-Chun Chen, 陳逸群
• Other Authors: Shuo-Hung Chang
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/94806410558062831989

碩士 === 國立臺灣大學 === 機械工程學研究所 === 96 === In the field of precision manufacture, vibration is influential in mechanical productions and instrumental measurements. Consequently, how to attenuate vibrations from the process of production and measurement is one of the main concerns of the research. Conventional vibration attenuation mechanisms are passive mechanisms, which are excellent in reducing cost and providing high stability. However, passive mechanisms are limited in reduction performances when facing rapidly-changed disturbances. Thanks to IC technology, traditional passive mechanisms transform into the active one. Active mechanisms measure plants in the first place then generate thrusts or torques in accordance with its feedback data. With those thrusts and torques, they help plants to remain stable or to reduce disturbances in order to achieve better performances. This study discusses the impacts of different loadings on transient performances as well as steady performances of active mechanisms. In our system, we apply laser interferometer as a sensor and VCM as an actuator. As to system identification, we adapt HP35665A dynamic signal analyzer as our model. We use SMC, IMP as well as PID controller to compensate outer disturbances and stimulate the possible result by using Simulink (Matlab).