力学与实践 ›› 2008, Vol. 30 ›› Issue (4): 50-53.DOI: 10.6052/1000-0992-2007-308

• 应用研究 • 上一篇    下一篇

压电结构的主动控制仿真与实验研究

刘相秋 王聪 王威远 邹振祝   

  1. 哈尔滨工业大学
  • 收稿日期:2007-07-20 修回日期:2007-10-13 出版日期:2008-08-08 发布日期:2008-08-08

SIMULATION AND EXPERIMENTAL STUDY ON ACTIVE CONTROL OF PIEZOELECTRIC STRUCTURE

  • Received:2007-07-20 Revised:2007-10-13 Online:2008-08-08 Published:2008-08-08

摘要: 结合有限元方法研究了直接负速度反馈和基于LQR(二次线性最优控制)的独立模 态空间主动控制方法来控制结构的振动, 采用一种新的仿真方法:PATRAN与MATLAB 联合仿真,对这两种方法进行主动控制数值仿真. 用MATLAB的xPC实时控制,进 行了主动板的振动控制实验,验证了采用上述控 制仿真方法的正确性. 各种结果表明用压电结构进行振动主动控制效果明显.

关键词: 振动主动控制, 压电结构, 数值仿真, 振动控制实验

Abstract: In order to study the dynamics characteristics and capabilities of piezoelectric smart structures, the Negative Velocity Feedback Control and Modal Space Control technique based on Linear Quadratic Regulator (LQR) control are used together with Finite Element Method in this paper. A new method of numerical simulation using PATRAN/NASTRAN and MATLAB is adopted to control the vibration of structures. Vibration control experiment of a plate shows the validity of the new simulation method with MATLAB/xPC Real-Time Workshop. Results show that the control method by using piezoelectric material is effective.

Key words: active vibration control, piezoelectric structure,