Experiment on Random Vibration Control for Flexible Beams Using Smart Material
The technology of smart materials and structures especially piezoelectric smart structures has become mature over the last decade. One promising application of piezoelectric smart structures is the control and suppression of unwanted structural vibrations. This work deals with the random vibration control and dynamic response for flexible beam with smart material. Smart material such as piezoelectric plastic PVDF is used as sensor and actuator, both are respectively bounded to the top surface and the bottom surface of the beam. The classical equations of motion are used to develop the theoretical models describing the vibration of piezoelectric smart structures, and the global dynamic equations of motion are given, and converted to modal-space model. The linear quadratic regulator (LQR) optimal control algorithm is employed for the controller design. A DSP-based vibration control system for flexible beam using smart material is developed. The aim of this experiment is to study the vibration suppression and dynamic response for flexible beam in random excitations. From analytical and experimental results, this control system has a fine performance of vibration control effect for flexible structure. Experiment also demonstrates the capacity of smart material being used as sensors and actuators for vibration suppression.
random vibration control flexible beam smart material linear quadratic regulator
GOU Xinke QIANG Minghui
College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China
国际会议
北京
英文
2007-08-05（万方平台首次上网日期，不代表论文的发表时间）