Experimental evaluation of a piezoelectric vibration absorber using a simplified fuzzy controller in a cantilever beam

2006 ◽  
Vol 296 (3) ◽  
pp. 567-582 ◽  
Author(s):  
J. Lin ◽  
Wei-Zheng Liu
Keyword(s):  
Cantilever Beam ◽  
Experimental Evaluation ◽  
Fuzzy Controller ◽  
Vibration Absorber ◽  
Piezoelectric Vibration

scholarly journals Theoretical and Experimental Studies on MEMS Variable Cross-Section Cantilever Beam Based Piezoelectric Vibration Energy Harvester

Micromachines ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 772
Author(s):  
Xianming He ◽  
Dongxiao Li ◽  
Hong Zhou ◽  
Xindan Hui ◽  
Xiaojing Mu
Keyword(s):  
Power Density ◽  
Cantilever Beam ◽  
Cross Section ◽  
Energy Harvester ◽  
Variable Cross Section ◽  
Vibration Energy ◽  
Variable Cross ◽  
Vibration Energy Harvester ◽  
Piezoelectric Vibration Energy Harvester ◽  
Piezoelectric Vibration

The piezoelectric vibration energy harvester (PVEH) based on the variable cross-section cantilever beam (VCSCB) structure has the advantages of uniform axial strain distribution and high output power density, so it has become a research hotspot of the PVEH. However, its electromechanical model needs to be further studied. In this paper, the bidirectional coupled distributed parameter electromechanical model of the MEMS VCSCB based PVEH is constructed, analytically solved, and verified, which laid an important theoretical foundation for structural design and optimization, performance improvement, and output prediction of the PVEH. Based on the constructed model, the output performances of five kinds of VCSCB based PVEHs with different cross-sectional shapes were compared and analyzed. The results show that the PVEH with the concave quadratic beam shape has the best output due to the uniform surface stress distribution. Additionally, the influence of the main structural parameters of the MEMS trapezoidal cantilever beam (TCB) based PVEH on the output performance of the device is theoretically analyzed. Finally, a prototype of the Aluminum Nitride (AlN) TCB based PVEH is designed and developed. The peak open-circuit voltage and normalized power density of the device can reach 5.64 V and 742 μW/cm3/g2, which is in good agreement with the theoretical model value. The prototype has wide application prospects in the power supply of the wireless sensor network node such as the structural health monitoring system and the Internet of Things.

Experimental Evaluation of a Piezoelectric Actuator for the Control of Vibration in a Cantilever Beam

1992 ◽  
Vol 206 (2) ◽  
pp. 99-106 ◽  
Author(s):  
J S Burdess ◽  
J N Fawcett
Keyword(s):  
Strain Rate ◽  
Piezoelectric Material ◽  
Cantilever Beam ◽  
Piezoelectric Actuator ◽  
Forced Vibration ◽  
Experimental Evaluation ◽  
Electrical Field ◽  
Control Forces ◽  
Piezoelectric Plates

When an electrical field is applied to a piezoelectric material, the material becomes mechanically strained. If this material is then bonded to a structure, this strain has an accompanying stress, and this can be used to introduce control forces into the structure. The paper considers this method of actuation by experimentally evaluating the use of piezoelectric plates for the purposes of controlling free and forced vibration in a cantilever beam. The control provided by measurements based on acceleration and strain rate is evaluated.

H ∞ Robust Control of Flexible Beam Vibration by Using a Hybrid Damper

1996 ◽  
Vol 118 (3) ◽  
pp. 643-648 ◽  
Author(s):  
Chong-Won Lee ◽  
Won-Ho Jee
Keyword(s):  
Robust Control ◽  
Laboratory Test ◽  
Cantilever Beam ◽  
Large Amplitude ◽  
Vibration Absorber ◽  
Flexible Beam ◽  
Test Rig ◽  
Control Scheme ◽  
Large Amplitude Vibrations ◽  
Hybrid Damper

A new hybrid damper is proposed to suppress the vibration of a flexible cantilever beam at its free end. It consists of an active piezoelectric-type servo-damper and a passive dampled vibration absorber to effectively suppress both the small and large amplitude vibrations. The H∞ control scheme is successfully applied to a laboratory test rig equipped with the hybrid damper when its overhung length is continually changed.

A New Reactive Hybrid Membership Function in Fuzzy Approach for Identification of Inclined Edge Crack in Cantilever Beam Using Vibration Signatures

2014 ◽  
Vol 592-594 ◽  
pp. 1996-2000 ◽  
Author(s):  
K.B. Ranjan ◽  
Sasmita Sahu ◽  
R. Parhi Dayal
Keyword(s):  
Cantilever Beam ◽  
Edge Crack ◽  
Fuzzy Controller ◽  
Experimental Results ◽  
Mode Shapes ◽  
Crack Identification ◽  
Hybrid Technique ◽  
Membership Functions ◽  
Inclined Edge Crack ◽  
Vibration Signatures

In this paper, the crack identification using smart technique (by several hybrid membership functions in a fuzzy controller) has been developed for inverse analysis of the vibration signatures (like modal frequencies, mode shapes) and crack parameters (like crack depth, crack location and crack inclination) of an inclined edge crack cantilever beam. The modal frequencies are obtained from finite element (using ANSYS) and experimental analysis which are used as inputs to the hybrid fuzzy controller. The hybrid fuzzy system is designed by taking different types of membership functions (MF) to determine the crack parameters. The calculated first three modal frequencies are used to create number of fuzzy rules with the three output crack parameters. Finally, the proposed hybrid technique is validated by comparing the results obtained from trapezoidal and Gaussian fuzzy controllers, FEA and experimental results. The outcomes obtained from hybrid fuzzy controller are in good agreement with experimental results. Nomenclature

A Self-Tuning Piezoelectric Vibration Absorber

1994 ◽  
Vol 5 (4) ◽  
pp. 559-566 ◽  
Author(s):  
Joseph J. Hollkamp ◽  
Thomas F. Starchville
Keyword(s):  
Vibration Absorber ◽  
Self Tuning ◽  
Piezoelectric Vibration

Passive/Active Autoparametric Cantilever Beam Absorber With Piezoelectric Actuator for a Two-Story Building-Like Structure

2015 ◽  
Vol 137 (1) ◽  
Author(s):  
Gerardo Silva-Navarro ◽  
Hugo F. Abundis-Fong
Keyword(s):  
Cantilever Beam ◽  
Active Vibration Control ◽  
Parametric Uncertainty ◽  
Vibration Absorber ◽  
Primary System ◽  
Internal Resonances ◽  
Piezoelectric Patch ◽  
Active Vibration ◽  
Stiffness And Damping ◽  
Story Building

This work deals with the design and experimental evaluation of a passive/active cantilever beam autoparametric vibration absorber mounted on a two-story building-like structure (primary system), with two rigid floors connected by flexible columns. The autoparametric vibration absorber consists of a cantilever beam with a piezoelectric patch actuator, cemented to its base, mounted on the top of the structure and actively controlled through an acquisition system. The overall system is then a coupled nonlinear oscillator subjected to sinusoidal excitation in the neighborhood of its external and internal resonances. The addition of the piezoelectric patch actuator to the cantilever beam absorber makes active the passive vibration absorber, thus enabling the possibility to control its equivalent stiffness and damping and, as a consequence, the implementation of an active vibration control scheme able to preserve, as possible, the autoparametric interaction as well as to compensate varying excitation frequencies and parametric uncertainty.

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