Vibration control of a funnel-shaped shell structure with distributed piezoelectric actuators and sensors

作     者：Trajkov, T. Nestorovic Koeppe, H. Gabbert, U. 

作者机构：Univ Magdeburg Fac Mech Engn Inst Mech D-39106 Magdeburg Germany 

出 版 物：《SMART MATERIALS AND STRUCTURES》 (Smart Mater Struct)

年 卷 期：2006年第15卷第4期

页      面：1119-1132页

核心收录：

学科分类：08[工学] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：SUPPRESSION SYSTEMS DESIGN reference model vibration suppression Distribute model identification Sensors model reference adaptive control Piezoelectric actuators vibration control state space 

摘      要：In this paper two approaches to vibration control of a funnel-shaped smart structure with distributed piezoelectric actuators and sensors are considered. They are based on different possibilities for the shell smart structure modeling. An optimal linear quadratic (LQ) tracking control system with additional dynamics is proposed as a model-based control solution for the vibration suppression of a funnel-shaped structure which is modeled using either of the two approaches suggested in this paper: a finite element method (FEM)-based approach and model identification based on the measured input-output signals. Another control approach is a direct robust model reference adaptive control (MRAC), which is based on the measurements of the plant input and output signals and desired behavior specified through a reference model. Both control approaches assume the state space realization of the controlled plant. Vibration suppression of the funnel-shaped inlet part of the magnetic resonance image (MRI) tomograph with distributed piezoelectric actuator and sensor patches is achieved applying proposed control concepts and verified through the Hardware-in-the-Loop experiments with dSPACE and through numeric simulations. The results of the vibration control show considerable suppression of the vibration magnitudes in the selected frequency range.