Experimental Investigation on Active Vibration Control of a Motor-Driven Flexible Plate System

• Main Authors: Hong-wu Jheng, 鄭弘武
• Other Authors: Chi-ying Lin
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/5adf7w

碩士 === 國立臺灣科技大學 === 機械工程系 === 102 === Suppressing vibration response of a motor-driven flexible structure system has been a challenging task due to its low damping property in the structure and coupling effects caused by motor motion. The vibration response contains modal response, and the response caused by external disturbances and coupling dynamics. From control point of view, this is a multiple-input, multiple-output (MIMO) system and the control goals comprise motor tracking control and vibration attenuation. This research aims to investigate vibration suppression control of a motor-driven flexible plate system by attaching piezoelectric sensors and actuators to the plate for piezo vibration control. To simplify the control design process while achieving satisfactory vibration suppression performance this study assumes that the coupling effects in the system can be simply treated as external disturbances or model uncertainties for the convenience of control design. Therefore, two single-input, single-output (SISO) controllers were designed for the motor tracking system and piezo vibration suppression control system, respectively. By exciting the flexible plate through motor periodic motion two advanced intelligent control methods, including hybrid adaptive fuzzy sliding mode control/repetitive control and fuzzy model predictive control, were applied to the piezo vibration control system for performance evaluation. Comparing to a MIMO PI controller, the experimental results demonstrate that the proposed SISO design control strategy can effectively suppress the complicated vibration response in a periodically excited motor-driven flexible structure system.