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Research on MIMO Active Vibration Control for Intelligent Piezoelectric Flexible Plate

Author: YuanHua
Tutor: ChenRenWen
School: Nanjing University of Aeronautics and Astronautics
Course: Measuring Technology and Instrument
Keywords: Piezoelectric smart structure Flexible Plate Active Vibration Control Optimal placement Feature Modeling Multi - input multi-input
CLC: TB535
Type: Master's thesis
Year: 2005
Downloads: 236
Quote: 3
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Abstract


Background space flexible structure intelligent autonomous control . Conduct research focused on aerospace flexible structure of two-dimensional sheet structure common cantilever extension vibration active control set of analog satellite solar panels flexible epoxy cantilever plate system for the study of the use of piezoelectric smart structure flexible board exists bending modes and torsional modes dimensional coupled vibration active control , and the theoretical and experimental research . First analyzes the basic characteristics of the piezoelectric material , and one-dimensional and two-dimensional sensor and the drive equation is given . Pointed out that the common nature of the D optimization and modal force guidelines is the arrangement of the sensors and actuators in the the modal strain largest local directly from looking structure mold -state strain maximum at the start position of the piezoelectric optimization . In on the basis of analysis features flexible plate mode shapes the appropriate piezoelectric film arranged to achieve a flexible plate bending modes and torsional modes independent sensing and control channels . Ideological feature modeling to overcome the difficulties flexible structure is difficult to accurately modeling the design is simple and effective , and easy project to achieve flexible boards feature model - based adaptive control law . The results of the study to establish a computer - based multiple-input multiple-output the flexible plate two-dimensional active vibration control experimental system . Experimental results show that the system design can not only be well controlled single -modal vibration of the flexible plate , also good for bending / twisting two-dimensional coupled vibration control effect piezoelectric sensors and actuators arranged reasonable and the control method is effective.

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CLC: > Industrial Technology > General industrial technology > Acoustic engineering > Vibration, noise and its control > Vibration and noise control and its use
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