Authors:
Nader Ghareeb
1
and
Rüdiger Schmidt
2
Affiliations:
1
Australian College of Kuwait, Kuwait
;
2
RWTH Aachen University of Technology, Germany
Keyword(s):
Super Element, Lyapunov Stability Function Controller, Positive Position Feedback, Strain Rate Feedback.
Related
Ontology
Subjects/Areas/Topics:
Engineering Applications
;
Industrial Engineering
;
Informatics in Control, Automation and Robotics
;
Intelligent Components for Control
;
Intelligent Control Systems and Optimization
;
Mechatronics Systems
;
Modeling, Analysis and Control of Discrete-event Systems
;
Modeling, Simulation and Architectures
;
Robotics and Automation
;
Signal Processing, Sensors, Systems Modeling and Control
;
System Modeling
;
Systems Modeling and Simulation
Abstract:
Reducing vibration in flexible structures has become a pivotal engineering problem and shifted the focus of many research endeavors. One technique to achieve this target is to implement an active control system. A conventional active control system is composed of a vibrating structure, a sensor to perceive the vibration, an actuator to counteract the influence of disturbances causing vibration, and finally a controller to generate the appropriate control signals. In this work, different linear controllers are used to attenuate the vibrations
of a cantilevered smart beam excited by its first eigenmode. A finite element (FE) model of the smart beam is initially created and then modified by using experimental data. The FE model is then reduced to a super element (SE) model with a finite number of degrees of freedom (DOF). Controllers are applied directly to the SE and the results are presented and compared.