scholarly journals Active Vibration Control of a Three-Dimensional Flexible Frame Structure. Spillover Completely Eliminated Response Analysis.

1991 ◽  
Vol 34 (2) ◽  
pp. 176-185 ◽  
Author(s):  
Masahiko UTSUMI
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Three Dimensional ◽  
Frame Structure ◽  
Response Analysis ◽  
Active Vibration

scholarly journals 249 2DOF Active Vibration Control for Three-dimensional Lightweight Isolation Table

2003 ◽  
Vol 2003 (0) ◽  
pp. _249-1_-_249-6_
Author(s):  
Masahiro NISHI ◽  
Takashi SHONO ◽  
Masahiko NARUKE ◽  
Toru WATANABE ◽  
Kazuto SETO
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Three Dimensional ◽  
Active Vibration

Active Vibration Control Method for Space Mechanical Structure with Piezostacks

2013 ◽  
Vol 198 ◽  
pp. 433-438
Author(s):  
Andrzej Piotr Koszewnik
Keyword(s):  
Control System ◽  
Vibration Control ◽  
Control Method ◽  
Active Vibration Control ◽  
Three Dimensional ◽  
Control Laws ◽  
Distributed Parameters ◽  
Short Period ◽  
Lqr Controller ◽  
Active Vibration

Mechanical structures are spatial, three-dimensional (3D) systems of distributed parameters. They present quite complicated plants, if methods of control systems theory are applied. The design process of the vibration control system for such plants is extremely difficult and requires an extensive heuristic knowledge. The subject of the control system is to eliminate the vibrations of the free end at the plane parallel to the foundation Similar problems are met, when the stabilization of robot arms, antennas, satellite solar batteries or slender skyscrapers is considered. In the paper we have presented the 3D bar structure with sticked parallel two piezo-stacks into bars. Recall piezo-elements are actuators, but sensors are two eddy-current sensors located in near free end the structure in perpendicular directions X and Y. Thus the whole structure is TITO (Two Input Two Output) system. For such system the control law was designed with used LQR controller. Above controller was designed for coupled and decoupled system also. In both case a correct damp and very short period of the vibration were criteria to choose the controller parameters. All investigations were carried out in two steps. In the first step control laws were designed in computer simulation. In the second step these control laws were verified experimentally on the laboratory stand by using DSP. Finally, desired control laws were compared.

Dynamic Analysis of Piezoelectric Smart Structures

2011 ◽  
Vol 295-297 ◽  
pp. 1353-1356
Author(s):  
Jie Li ◽  
Li Li Hu ◽  
Li Qin ◽  
Jun Liu ◽  
Rui Ping Tao ◽  
...  
Keyword(s):  
Vibration Control ◽  
Smart Structures ◽  
Active Vibration Control ◽  
Smart Structure ◽  
Response Analysis ◽  
Ansys Software ◽  
Model Calculations ◽  
Response Characteristics ◽  
Ansys Simulation ◽  
Active Vibration

In order to solve the active vibration control of piezoelectric smart structures, focus problems on the structural analysis of the dynamic characteristics. To piezoelectric smart structure for the research object, finite element modal analysis, solving the natural frequency and response characteristics. Firstly, analyzed the problems of structural eigenvalues ​​and eigenvectors problems, then prepared dynamic response analysis program of FEM based on MATLAB, and complete the theoretical model calculations. At the same time, using ANSYS software to simulate and analyze, theresults show that, ANSYS simulation result is consistent with the theoretical value, so as to study the piezoelectric active vibration control of smart structures and lay a good foundation.

scholarly journals Novel Distributed PZT Active Vibration Control Based on Characteristic Model for the Space Frame Structure

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Hua Zhong ◽  
Yong Wang ◽  
Hanzheng Ran ◽  
Qing Wang ◽  
Changxing Shao
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Frame Structure ◽  
Unknown Parameters ◽  
Space Frame ◽  
Modal Strain Energy ◽  
Characteristic Model ◽  
Model Free ◽  
Active Vibration ◽  
Space Frame Structure

A novel distributed PZT control strategy based on characteristic model is presented for space frame structure in this paper. It is a challenge to obtain the exact mechanical model for space structure, since it is a coupling MIMO plant with unknown parameters and disturbances. Thus the characteristic modeling theory is adopted to establish the needed model, which can accurately describe the dynamic characteristics of the space frame structure in real time. On basis of this model, a keep tracking controller is designed to suppress the vibration actively. It is shown that the proposed model-free method is very robust and easy to implement. To solve the complex and difficulty problem on PZT location optimization, an efficient method with modal strain energy and maximum vibration amplitude is proposed. Finally, a simulation study is conducted to investigate the effectiveness of the proposed active vibration control scheme.

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