Active Vibration Suppression of a Smart Beam by Using an LQG Control Algorithm

Date

2011-06-22

Author

Onat, Cem
Şahin, Melin
Yaman, Yavuz

Metadata

Show full item record

Item Usage Stats

198
views

0
downloads

The aim of this study was to design and experimentally apply a Linear Quadratic Gaussian (LQG) controller for the active vibration suppression of a smart beam. The smart beam was a cantilever aluminum beam with eight symmetrically located surface-bonded PZT (Lead-Zirconate-Titanate) patches which were utilized both as sensor or actuator depending on their location. 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. LQG controller, which is the result of a modern state-space technique, was used in order to design a dynamic optimal regulator. The controller was expected to provide a trade-off between the regulation performance and control effort and it also took process disturbance and measurement noise into consideration. The LQG regulators of the current study were evaluated via closed loop frequency domain simulations in order to regulate the vibration level of the smart beam around zero value. For the experimental verifications, a harmonious controller was selected based on the performed trade-offs between the performance and measurement noise rejection levels. The experimentally obtained time domain responses have demonstrated that the designed controller successfully suppressed the vibration levels of the first flexural mode of the smart beam.

Subject Keywords

Smart beam, PZT, Vibration, LQG control

URI

https://hdl.handle.net/11511/76346
http://ae.metu.edu.tr/~yyaman/Publications/International/40.pdf

Conference Name

2nd ICEAF, 2nd International Conference of Engineering Against Fracture (22-24 Haziran 2011)

Collections

Department of Aerospace Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Optimal Control of a Smart Beam by Using a Luenberger Observer Onat, Cem; Şahin, Melin; Yaman, Yavuz (2013-06-26) This paper presents the design of an optimal vibration control mechanism, namely an LQR controller, with a Luenberger observer for a smart beam having surface bonded piezoelectric sensors and actuators. The approach intends to suppress the vibrations of the first flexural resonance of the smart beam. The smart beam studied was a cantilever aluminium beam with eight surface bonded Lead-Zirconate-Titanate (PZT) patches in bimorph configuration. The smart beam was excited at its first resonance frequency (appr...
Active Vibration Suppression of a Smart Beam via PI D Control Onat, Cem; Şahin, Melin; Yaman, Yavuz (2010-10-11) : In this study, a PIλD µ controller was designed for the active vibration suppression of a smart beam equipped with PZT (Lead-Zirconate-Titanate) patches. The smart beam is a cantilever aluminium beam having eight symmetrically located surface-bonded piezoelectric patches. In this particular application, a group of PZT patches closed to the root of the beam was used as actuators and from the remaining ones a patch was nominated as a sensor. All the actuators were used in bimorph configuration. PIλD µ con...
Active neuro-adaptive control of a smart beam having uncertainties in structural dynamics Akın, Onur; Şahin, Melin; Department of Aerospace Engineering (2015) In this thesis, 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. At first, 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 frequency...
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...
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...

Citation Formats

C. Onat, M. Şahin, and Y. Yaman, “Active Vibration Suppression of a Smart Beam by Using an LQG Control Algorithm,” presented at the 2nd ICEAF, 2nd International Conference of Engineering Against Fracture (22-24 Haziran 2011), Mykonos, Greece, 2011, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/76346.