Skip to Content
Toggle navigation
|
Switch language
English
Switch language
English
Español
中文
Login
People
About
Contact
Help
Browse
Go
Search Constraints
Start Over
Filtering by:
Date Created
2002-06
Remove constraint Date Created: 2002-06
Type of Work
Article
Remove constraint Type of Work: Article
1
entry found
Sort by date uploaded ▲
relevance
date uploaded ▼
date uploaded ▲
date modified ▼
date modified ▲
title A-Z
title Z-A
Number of results to display per page
10 per page
10
per page
20
per page
50
per page
100
per page
View results as:
List
Gallery
Masonry
Slideshow
Search Results
Active control of flexible structures using a fuzzy logic algorithm
Type:
Article
Description/Abstract:
This study deals with the development and application of an active control law for the vibration suppression of beam-like flexible structures experiencing transient disturbances. Collocated pairs of sensors/actuators provide active control of the structure. A design methodology for the closed-loop control algorithm based on fuzzy logic is proposed. First, the behavior of the open-loop system is observed. Then, the number and locations of collocated actuator/sensor pairs are selected. The proposed control law, which is based on the principles of passivity, commands the actuator to emulate the behavior of a dynamic vibration absorber. The absorber is tuned to a targeted frequency, whereas the damping coefficient of the dashpot is varied in a closed loop using a fuzzy logic based algorithm. This approach not only ensures inherent stability associated with passive absorbers, but also circumvents the phenomenon of modal spillover. The developed controller is applied to the AFWAL/FIB 10 bar truss. Simulated results using MATLAB© show that the closed-loop system exhibits fairly quick settling times and desirable performance, as well as robustness characteristics. To demonstrate the robustness of the control system to changes in the temporal dynamics of the flexible structure, the transient response to a considerably perturbed plant is simulated. The modal frequencies of the 10 bar truss were raised as well as lowered substantially, thereby significantly perturbing the natural frequencies of vibration. For these cases, too, the developed control law provides adequate settling times and rates of vibrational energy dissipation.
Creator/Author:
Weller, Tanchum
;
Cohen, Kelly
, and
Ben-Asher, Joseph Z.
Submitter:
Kelly Cohen
Date Uploaded:
02/08/2017
Date Modified:
04/05/2017
Date Created:
2002-06
License:
All rights reserved
Toggle facets
Limit your search
Type of Work
Article
[remove]
1
Creator/Author
Ben-Asher, Joseph Z.
1
Cohen, Kelly
1
Weller, Tanchum
1
College
Engineering and Applied Science
1
Language
English
1
Date Created
2002-06
[remove]
1