Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Active vibration control of a smart sandwich plate via piezoelectric sensors and actuators
Download
index.pdf
Date
2015
Author
Aksoy, Yunus Tansu
Metadata
Show full item record
Item Usage Stats
270
views
137
downloads
Cite This
In this study, the first three vibration modes of a smart sandwich plate, which are 1st out-of-plane bending, 1st torsion and 2nd out-of-plane bending modes, are aimed to be suppressed by using active vibration control techniques comprising a pole placement controller. Smart sandwich plate is composed of a passive sandwich composite plate and piezoelectric patches (PZT Lead-Zirconate-Titanate) attached with epoxy adhesive at specific locations determined by using finite element modelling and analysis. Those PZT patches on the smart sandwich plate are then used both as actuators and sensors. Before manufacturing the smart sandwich plate, the locations of PZT patches are determined by considering the vibrational characteristics of the sandwich plate. Following this, an experimental modal analysis is performed to verify the finite element analysis results. Additionally, the model is updated according to the experimental results. Then, an algorithm is adapted in order to determine the spatial locations of the PZT patches and parallel to the obtained results they are attached to the passive sandwich plate. After the manufacturing process of the smart sandwich plate, a system identification is performed experimentally by sending an input signal covering the frequencies of interest and recording the response through a designated sensor. Having obtained the frequency response function of the smart sandwich plate experimentally, a transfer function is fitted in the frequency domain. Finally, various active vibration controllers are designed. Those controllers are then validated through simulations and applied in an experimental environment via pole placement method combined with various observers and filters to suppress the free and forced vibrations of the smart sandwich plate at the aforementioned resonance frequencies. The three different designed controllers are observed to suppress the vibrations in each of the aimed mode successfully by working individually and also operating together without compromising the individual performance of the controllers in the vibration suppression of the smart sandwich plate.
Subject Keywords
Detectors.
,
Actuators.
,
Piezoelectric devices.
,
Finite element method.
URI
http://etd.lib.metu.edu.tr/upload/12619206/index.pdf
https://hdl.handle.net/11511/24942
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
Active vibration suppression of a flexible beam via sliding mode and H ∞ control
Itik, Mehmet; Salamci, Metin U.; Demet Ulker, F.; Yaman, Yavuz (2005-12-01)
n this study, sliding mode and H. control techniques are applied to a flexible beam in order to suppress some of the vibration modes. The beam is a clamped-free flexible structure having piezoelectric (PZT) patches as actuators and a laser displacement sensor for measuring the tip point deflection. The beam is modeled in two different ways for each control algorithm. To implement sliding mode control (SMC), Euler-Bernoulli beam model is used and a finite dimensional LTI model is formed by using assumed mode...
Active Vibration Suppression of a Smart Beam by Using a Fractional Order Control
Onat, Cem; Şahin, Melin; Yaman, Yavuz (2011-06-22)
In this study, a fractional order controller was designed and experimentally applied for the active vibration suppression of a smart beam. The smart beam was a cantilever aluminium beam equipped with eight symmetrically located surface-bonded PZT (Lead-Zirconate-Titanate) patches which were used both as sensor and actuator. For this particular application, a group of PZT patches closed to the root of the beam was used as actuators in the bimorph configuration and a single patch was nominated as a sensor. Fr...
Active vibration suppression of a smart beam via self sensing piezoelectric actuator
Uğur, Arıdoğan; Şahin, Melin; Yaman, Yavuz; Volkan, Nalbantoğlu (null; 2009-08-17)
In this paper, an active vibration suppression of a smart beam using self-sensing piezoelectric actuator is presented. The smart beam is composed of a cantilever aluminium beam with four surface-bonded piezoelectric patches symmetrically located both side of the beam. Piezoelectric materials can transform mechanical deformation to electric signal and vice versa. This property of piezoelectric materials enables them to be used as an actuator and a sensor. In self-sensing actuator configuration, the piezoelec...
APPLICATION OF TUNED MASS DAMPERS AND LEVER TYPE VIBRATION ISOLATOR TO THE QUARTER-CAR MODEL IN ORDER TO INCREASE RIDE COMFORT
Aydan, Goksu; Ciğeroğlu, Ender; BAŞLAMIŞLI, SELAHATTİN ÇAĞLAR (2010-07-24)
In this paper, performance of passive vibration isolators, namely rotational / linear tuned mass dampers (TMD) and lever type vibration isolators (LVI), are investigated under different configurations for optimal ride comfort. TMDs reduce vibration levels by absorbing the energy of the system, especially around natural frequencies with the help of viscous dampers. Two types of TMDs, rotational and linear, are investigated in this study. Although linear TMDs can be more easily implemented on suspension syste...
Active neuro-adaptive vibration suppression of a smart beam
Akin, Onur; Şahin, Melin (2017-12-01)
In this research, an active vibration suppression of a smart beam having piezoelectric sensor and actuators is investigated by designing separate controllers comprising a linear quadratic regulator and a neural network. Firstly, design of a smart beam which consists of a cantilever aluminum beam with surface bonded piezoelectric patches and a designed mechanism having a micro servomotor with a mass attached arm for obtaining variations in the frequency response function are presented. Secondly, the frequenc...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
Y. T. Aksoy, “Active vibration control of a smart sandwich plate via piezoelectric sensors and actuators,” M.S. - Master of Science, Middle East Technical University, 2015.
