scholarly journals Active control of smart structures - an overall approach

2010 ◽  
Vol 8 (1) ◽  
pp. 35-44 ◽  
Author(s):  
Tamara Nestorovic ◽  
Miroslav Trajkov
Keyword(s):  
Active Control ◽  
Experimental Verification ◽  
Structural Control ◽  
Civil Engineering ◽  
Smart Structures ◽  
Noise Attenuation ◽  
Control Simulation ◽  
Active Structural Control ◽  
Active Vibration ◽  
Piezoelectric Structures

The paper presents active control of smart structures within a focused frame of piezoelectric applications in active vibration and noise attenuation with potentials for the use in mechanical and civil engineering. An overall approach to active control of piezoelectric structures involves subsequent steps of modeling, control, simulation, experimental verification and implementation. Each of these steps is regarded in details. Different application examples showing the feasibility of the active structural control will be presented.

scholarly journals Active control of mechanical structures in research and education

2013 ◽  
Vol 40 (2) ◽  
pp. 203-221
Author(s):  
Tamara Nestorovic
Keyword(s):  
Active Control ◽  
Smart Structures ◽  
Piezoelectric Actuators ◽  
Noise Attenuation ◽  
Research Experience ◽  
Active Vibration ◽  
Research And Education ◽  
Young Researchers ◽  
Piezoelectric Actuators And Sensors

Several crucial phases of the overall approach to development and design of smart structures are outlined in this paper. They are focused on control of lightweight mechanical structures with respect to active vibration and noise attenuation using piezoelectric actuators and sensors. The research experience and growing interest in development of smart structures have motivated introduction of courses on smart structures at universities, which are being studied extensively and with great interest by young researchers and students. Some of the author?s experiences regarding education in this field will be addressed as well.

scholarly journals Advances in Structural Control in Civil Engineering in China

2010 ◽  
Vol 2010 ◽  
pp. 1-23 ◽  
Author(s):  
Hongnan Li ◽  
Linsheng Huo
Keyword(s):  
Active Control ◽  
Structural Control ◽  
Passive Control ◽  
Civil Engineering ◽  
State Of The Art ◽  
Semiactive Control ◽  
Engineering Structures ◽  
Future Directions ◽  
Control Techniques ◽  
Practical Engineering

In the recent years, much attention has been paid to the research and development of structural control techniques with particular emphasis on alleviation of wind and seismic responses of buildings and bridges in China. Structural control in civil engineering has been developed from the concept into a workable technology and applied into practical engineering structures. The aim of this paper is to review a state of the art of researches and applications of structural control in civil engineering in China. It includes the passive control, active control, hybrid controland semiactive control. Finally, the possible future directions of structural control in civil engineering in China are presented.

Control Algorithms for Semi-Active Structural Systems: Do they Really Matter?

2008 ◽  
Vol 56 ◽  
pp. 182-187
Author(s):  
Antonio Occhiuzzi
Keyword(s):  
Control System ◽  
Control Systems ◽  
Active Control ◽  
Structural Control ◽  
Control Algorithm ◽  
Scientific Literature ◽  
Control Algorithms ◽  
Control Law ◽  
Structural Systems ◽  
Active Structural Control

Control algorithms for semi-active structural control system found in the scientific literature often rely on the choice of several parameters included in the control law. The present paper shows the preliminary conclusions of a study aiming to explain the weak dependency of the response reduction associated to semi-active control systems on the particular choice of the control algorithm adopted, provided that the relevant parameters of any control law be properly tuned.

APPLICATION OF FUZZY CONTROL THEORY IN ACTIVE CONTROL OF STRUCTURES

1996 ◽  
Vol 04 (03) ◽  
pp. 255-274 ◽  
Author(s):  
KEN YEH ◽  
WEILING CHIANG ◽  
DERSHIN JUANG
Keyword(s):  
Fuzzy Control ◽  
Control Theory ◽  
Active Control ◽  
Structural Control ◽  
Fuzzy Controller ◽  
Degree Of Freedom ◽  
Single Degree Of Freedom ◽  
Active Structural Control ◽  
Band Pass ◽  
Control Methodology

The purpose of this paper is to apply fuzzy control theory in active structural control. A single-degree-of-freedom (SDOF) structure is used to develop the basic approach. The approach is then extended to multi-degree-of-freedom (MDOF) structures with the usage of weighted displacement and weighted velocity. A band-pass white noise or large amount of earthquake records are used as excitations to the structures to calculate the normalized displacements and velocities for obtaining the range of weighted displacements and velocities. Several examples are utilized to demonstrate the feasibility of fuzzy control methodology. It is shown that the fuzzy controller can achieve satisfactory results in the application of active control of structures and the feasibility is verified.

RECENT DEVELOPMENTS OF STRUCTURAL VIBRATION CONTROL IN CIVIL ENGINEERING IN CHINA

2010 ◽  
Vol 04 (01) ◽  
pp. 9-21 ◽  
Author(s):  
LI HONGNAN ◽  
HUO LINSHENG
Keyword(s):  
Active Control ◽  
Structural Control ◽  
Passive Control ◽  
Civil Engineering ◽  
Hybrid Control ◽  
Structural Vibration ◽  
Engineering Structures ◽  
Recent Developments ◽  
Practical Engineering ◽  
Seismic Response Of Buildings

In recent years, much attention has been paid to research and development of structural control techniques with particular emphasis on alleviation of wind and seismic response of buildings and bridges in China. Structural control in civil engineering has been developed from the concept into a workable technology and applied into practical engineering structures. The aim of this paper is to review a state-of-the-art of researches and application of structural control in civil engineering in China. It includes the passive control, active control, hybrid control, and semi-active control. Finally, the possible future directions of structural control in civil engineering in China are presented.

Active Reduction of Sound Transmission Through a Double Panel Partition

1999 ◽  
Author(s):  
P. De Fonseca ◽  
P. Sas ◽  
H. Van Brussel
Keyword(s):  
Active Control ◽  
Structural Control ◽  
Sound Transmission ◽  
Acoustic Energy ◽  
Plate Motion ◽  
Control Approach ◽  
Acoustic Coupling ◽  
Active Structural Control ◽  
The Cost ◽  
Large Frequency

Abstract The paper addresses the active control of the sound transmission through a double panel partition. A literature survey indicates that active cavity control is much more efficient than active structural control. The vibro-acoustic behaviour of the double wall is analysed in light of this observation. This analysis shows that the sound transmission through the double panel is larger than that through a single panel at the resonances of the coupled eigenmodes with the strongest vibro-acoustic coupling between the plate motion and the pressure in the cavity. At frequencies where the double panel radiates much sound energy, the acoustic energy in the cavity is also high. Active control simulations illustrate that the cavity control approach, reducing not only the uncoupled (0,0,0) mode, achieves a considerable reduction of the sound transmission over a large frequency band. Depending on the desired noise reduction, the complexity and the cost of the control system can be reduced by a proper diagonalisation of the controller and by a clustering of the sensors and the actuators.

Parametric Study of Damping Characteristics of Magneto-Rheological Damper: Mathematical and Experimental Approach

2020 ◽  
Vol 15 (3) ◽  
pp. 37-48
Author(s):  
Zubair Rashid Wani ◽  
Manzoor Ahmad Tantray
Keyword(s):  
Structural Control ◽  
Research Work ◽  
Testing Machine ◽  
Input Voltage ◽  
Damping Coefficient ◽  
Control Technique ◽  
Damping Force ◽  
Active Devices ◽  
Active Structural Control ◽  
Magneto Rheological

The present research work is a part of a project was a semi-active structural control technique using magneto-rheological damper has to be performed. Magneto-rheological dampers are an innovative class of semi-active devices that mesh well with the demands and constraints of seismic applications; this includes having very low power requirements and adaptability. A small stroke magneto-rheological damper was mathematically simulated and experimentally tested. The damper was subjected to periodic excitations of different amplitudes and frequencies at varying voltage. The damper was mathematically modeled using parametric Modified Bouc-Wen model of magneto-rheological damper in MATLAB/SIMULINK and the parameters of the model were set as per the prototype available. The variation of mechanical properties of magneto-rheological damper like damping coefficient and damping force with a change in amplitude, frequency and voltage were experimentally verified on INSTRON 8800 testing machine. It was observed that damping force produced by the damper depended on the frequency as well, in addition to the input voltage and amplitude of the excitation. While the damping coefficient (c) is independent of the frequency of excitation it varies with the amplitude of excitation and input voltage. The variation of the damping coefficient with amplitude and input voltage is linear and quadratic respectively. More ever the mathematical model simulated in MATLAB was in agreement with the experimental results obtained.

Sign in / Sign up

Export Citation Format

Share Document