Active Vibration Control of a Flexible Beam Based on Experimental Modal Analysis

摘要：

The study of algorithms for active vibration control in flexible structures became an area of enormous interest, mainly due to the countless demands of an optimal performance of mechanical systems as aircraft and aerospace structures. Mode theory and linear quadratic state-feedback regulator are applied to suppress the vibration of a flexible link with piezoelectric actuators and strain gage transducer. The state-space dynamic model of the system was derived by using finite element method and experimental modal test. On the basis of the model, a Kalman state estimator is designed taking into account the uncertain disturbance and measurement noise. The disturbance and measurement noise are treated as white noise. A linear quadratic statefeedback regulator is implemented, which minimizes the quadratic performance function that trades off regulation performance and control effort. The experimental results show that the proposed controller can provide good disturbance rejection and can effectively reduce rapidly the strain of the flexible link and elastic vibration response.

关键词： active vibration control linear quadratic regulator experimental modal test finite element method

作者: Junfeng Hu Dachang Zhu Qiang Chen Qihua Gu

作者单位: School of Mechanical & Electrical Engineering Jiangxi University of Science and Technology Ganzhou, China

会议类型: 国际会议

会议名称: 2011 3rd International Conference on Advanced Computer Control(2011年IEEE第三届高端计算机控制国际会议 ICACC2011)

会议地点: 哈尔滨

会议语种:英文

页码: 346-350

在线出版日期: 2011-01-18（万方平台首次上网日期，不代表论文的发表时间）