Theoretical Investigation of a Structure for Active Vibration Control with Fuzzy Logic Approach

Abstract:

The main purpose of this study is to prepare mathematical model for active vibration control of a structure. This paper presents the numerical and experimental modal analysis of aluminum cantilever beam in order to investigate the dynamic characteristics of the structure. The results will be used for active vibration control of structure’s experimental setup. Experimental natural frequencies are obtained and compared to verify the proposed numerical model by using modal analysis results. MATLAB System Identification Toolbox and ANSYS harmonic response function are used together to estimate beam’s equations of motion which include its amplitude, frequency and phase angle values. Moreover, the mathematical model of beam is simulated in MATLAB/Simulink software to determine the dynamic behavior of the proposed system. Furthermore, another prediction model approach with multiple input and single output is used to find the realistic behavior of beam via an adaptive neural-network-based fuzzy logic inference system, in addition, impulse responses of the proposed models are compared and the control block diagram for active vibration control is implemented. As a first iteration, PID type controller is designed to suppress vibrations against the disturbance input. The results of modal analysis, the prediction models, controlled and uncontrolled system responses are presented in graphics and tables for obtaining a sample numerical active vibration control.

• Periodical: Applied Mechanics and Materials (Volume 598)
• Pages: 529-533
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.598.529
• Online since: July 2014
• Authors: Erdi Gülbahçe*, Mehmet Çelik, Mustafa Tinkir
• Keywords: Active Vibration Control, Cantilever Beam, Fuzzy Logic Model, Modal Analysis

References

[1] Ö. Türker., Designing and manufacturing of pzt/polymer based smart beams which compatible active vibration control, Master Thesis, June, (2009).

[2] G. Özgen., Introduction to Smart Structures and Materials, METU, Ankara, (2011-2012).

[3] F. Lüleci., Active vibration control of beam and plates by using piezoelectric patch actuators, Master Thesis, ODTÜ, January, (2013).

[4] N. Jalili., Piezoelectric-Based Vibration Control: From Macro to Micro/Nano Scale Systems. Springer, (2009).

[5] ANSYS Inc., ANSYS Mechanical APDL Coupled-Field Analysis Guide, Canonsburg, PA, (2010).

[6] A. Karabulut., Kütlenin taşıt sistemine etkisinin modal analizi kullanarak belirlenmesi, Machine Technologies Electronics Journals, Vol: 6, No: 1, (2009), pp.17-23.

[7] A. Bayraktar., A. Türker, Deneysel modal analiz yöntemi ile düzlem çerçevelerin dinamik karakteristiklerinin belirlenmesi, Earthquake Symposium, Kocaeli, 23-24 March, (2005).