System Identification and Observer-Based Control Design of a Piezoelectric Actuated Cantilever Beam

2013 ◽  
Author(s):  
Bei Lu ◽  
Qifu Li
Keyword(s):  
Cantilever Beam ◽  
Structural Damage ◽  
Model Simulation ◽  
Damping Ratio ◽  
Order System ◽  
Cantilever Beams ◽  
Dynamics Model ◽  
Aircraft Wings ◽  
Microelectromechanical Devices ◽  
Piezoelectric Cantilever

Cantilever beams are widely found in many different applications such as aircraft wings and microelectromechanical devices. One of the problems associated with cantilever structures is that uncontrolled tip vibrations can cause serious structural damage. This paper presents one possible solution to control the oscillation of a cantilever beam. The solution involves the use of strain gauges to measure the oscillation and piezoelectric actuators to control the tip deflection. The piezoelectric cantilever beam is modeled as a second-order system with one degree-of-freedom. The system parameters, including the natural frequency, the damping ratio, and the zeros, are identified from measurement of free and sinusoidal responses. An observer-based controller is then designed using the identified dynamics model. Simulation and experimental results demonstrate the accuracy of the model and the performance of the controller.

Structural Design and Testing of a Butterfly Piezoelectric Generator with Multilayer Cantilever Beams

2013 ◽  
Vol 655-657 ◽  
pp. 823-829 ◽  
Author(s):  
Zhi Lin Ruan ◽  
Jun Jie Gong ◽  
Meng Chang Cai ◽  
Bing Huang
Keyword(s):  
Resonant Frequency ◽  
Cantilever Beam ◽  
Structural Design ◽  
Output Voltage ◽  
Experimental Setup ◽  
Cantilever Beams ◽  
Material Parameters ◽  
Piezoelectric Cantilever ◽  
Piezoelectric Generator ◽  
Design And Testing

In order to solve the inconsistent problem of multi-layer connection and vibration in each layer, a butterfly piezoelectric generator with multilayer cantilever beams is designed. The generator is mainly constituted by butterfly multilayer cantilever beams and mass subassembly two parts. Physical devices of butterfly generator and typical piezoelectric cantilever are fabricated respectively. The experimental setup is also put up for the testing of resonant frequency and output voltage. It can be found that each layer of multilayer generator has a similar output voltage and resonant frequency to the typical one with same geometric and material parameters. So each layer in butterfly piezoelectric generator can be simplified as a typical cantilever beam for researching and analyzing.

The Optimal Design and Analysis of Piezoelectric Cantilever Beams for Power Generation Devices

2005 ◽  
Vol 888 ◽  
Author(s):  
Dongna Shen ◽  
Jyoti Ajitsaria ◽  
Song-Yul Choe ◽  
Dong-Joo Kim
Keyword(s):  
Power Density ◽  
Cantilever Beam ◽  
Proof Mass ◽  
Rapid Development ◽  
High Stress ◽  
Ambient Vibration ◽  
Cantilever Beams ◽  
High Acceleration ◽  
Piezoelectric Cantilever ◽  
Cantilever Structure

ABSTRACTWith the rapid development of wireless remote sensor systems, battery is becoming the limiting factor in the lifetime of the device and miniaturization. As a way to eliminate battery in the system, the conversion of ambient vibration energy has been addressed. The piezoelectric cantilever beam with a proof mass was exploited for energy conversion since it can generate large strain and power density. The design of cantilever beams was optimized through numerical analysis and FEM simulation at higher acceleration condition. The investigated parameters influencing the output energy of piezoelectric bimorph cantilevers include dimensions of cantilever beam and proof mass. The resonant frequency and robustness of cantilever structure were also considered for enhancing power conversion efficiency and implementing devices at high acceleration condition. The power density generated by the optimized piezoelectric device was high enough (> 1200 μW/cm3) to operate microsensor systems. However, high stress near clamping area of cantilever beam could lead to the fracture at high acceleration condition.

scholarly journals A Multi-Parameter Perturbation Solution and Experimental Verification for Bending Problem of Piezoelectric Cantilever Beams

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1934 ◽  
Author(s):  
Zhi-Xin Yang ◽  
Xiao-Ting He ◽  
Hong-Xia Jing ◽  
Jun-Yi Sun
Keyword(s):  
Cantilever Beam ◽  
Perturbation Solution ◽  
Experimental Results ◽  
Cantilever Beams ◽  
Parameter Perturbation ◽  
Analysis And Design ◽  
Piezoelectric Polymers ◽  
Piezoelectric Cantilever ◽  
Piezoelectric Structure ◽  
Coupling Characteristics

The existing studies indicate that the application of piezoelectric polymers is becoming more and more extensive, especially in the analysis and design of sensors or actuators, but the problems of piezoelectric structure are usually difficult to solve analytically due to the force–electric coupling characteristics. In this study, the bending problem of a piezoelectric cantilever beam was investigated via theoretical and experimental methods. First, the governing equations of the problem were established and non-dimensionalized. Three piezoelectric parameters were selected as perturbation parameters and the perturbation solution of the equations was finally obtained using a multi-parameter perturbation method. In addition, the relevant experiments of the piezoelectric cantilever beam were carried out, and the experimental results were in good agreement with the theoretical solutions. Based on the experimental results, the effect of piezoelectric properties on the bending deformation of piezoelectric cantilever beams was analyzed and discussed. The results indicated that the multi-parameter perturbation solution obtained in this study is effective and it may serve as a theoretical reference for the design of sensors or actuators made of piezoelectric polymers.

Analysis of Active Vibration Control in Damping Cantilever Beam by ANSYS with Material Properties

2012 ◽  
Vol 252 ◽  
pp. 102-106
Author(s):  
Jing Dai ◽  
Zhi Xiong Huang ◽  
Zhuo Chen ◽  
Rong Yang Dou ◽  
Min Xian Shi
Keyword(s):  
Vibration Control ◽  
Cantilever Beam ◽  
Material Properties ◽  
Piezoelectric Effect ◽  
Damping Ratio ◽  
Active Vibration Control ◽  
Cantilever Beams ◽  
Transient Dynamic Analysis ◽  
Composite Foam ◽  
Active Vibration

It is possible to model transient dynamic analysis of different composite foam cantilever beams by ANSYS/Multiphysics. By the piezoelectric material's positive piezoelectric effect and negative piezoelectric effect, the active vibration control of damping cantilever beam has achieved through the APDL program. The analysis of the results indicates when the control ratio K kept constant, the vibration stop times and the material damping ratio were closely connected.

scholarly journals A Preliminary Study on the IoT-Based Pavement Monitoring Platform Based on the Piezoelectric-Cantilever-Beam Powered Sensor

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Yue Hou ◽  
Linbing Wang ◽  
Dawei Wang ◽  
Hailu Yang ◽  
Meng Guo ◽  
...  
Keyword(s):  
Cantilever Beam ◽  
Vibrational Energy ◽  
Acceleration Sensor ◽  
Piezoelectric Energy ◽  
Piezoelectric Cantilever ◽  
Pavement Monitoring ◽  
Preliminary Study ◽  
Operation Cycle ◽  
Infrastructure Health ◽  
Monitoring Platform

Green and sustainable power supply for sensors in pavement monitoring system has attracted attentions of civil engineers recently. In this paper, the piezoelectric energy harvesting technology is used to provide the power for the acceleration sensor and Radio Frequency (RF) communication. The developed piezoelectric bimorph cantilever beam is used for collecting the vibrational energy. The energy collection circuit is used to charge the battery, where the power can achieve 1.68 mW and can meet the power need of acceleration sensor for data collection and transmission in one operation cycle, that is, 32.8 seconds. Based on the piezoelectric-cantilever-beam powered sensor, the preliminary study on the IoT-based pavement monitoring platform is suggested, which provides a new applicable approach for civil infrastructure health monitoring.

Performance Analysis for a Wave Energy Harvester of Piezoelectric Cantilever Beam

2019 ◽  
Vol 83 (sp1) ◽  
pp. 976
Author(s):  
Ming Liu ◽  
Hengxu Liu ◽  
Hailong Chen ◽  
Yuanchao Chai ◽  
Liquan Wang
Keyword(s):  
Performance Analysis ◽  
Cantilever Beam ◽  
Wave Energy ◽  
Energy Harvester ◽  
Piezoelectric Cantilever

scholarly journals Crack Identification and Localization In Structural Beams Using Numerical and Experimental Modal Analysis- A Review

2020 ◽  
pp. 62-68
Keyword(s):  
Modal Analysis ◽  
Natural Frequency ◽  
Structural Damage ◽  
Experimental Modal Analysis ◽  
Mode Shapes ◽  
Crack Identification ◽  
Engineering Structures ◽  
Aircraft Wings ◽  
Crack Location ◽  
Damaged Beams

This article presents a critical review of recent research done on crack identification and localization in structural beams using numerical and experimental modal analysis. Crack identification and localization in beams are very crucial in various engineering applications such as ship propeller shafts, aircraft wings, gantry cranes, and Turbo machinery blades. It is necessary to identify the damage in time; otherwise, there may be serious consequences like a catastrophic failure of the engineering structures. Experimental modal analysis is used to study the vibration characteristics of structures like natural frequency, damping and mode shapes. The modal parameters like natural frequency and mode shapes of undamaged and damaged beams are different. Based on this reason, structural damage can be detected, especially in beams. From the review of various research papers, it is identified that a lot of the research done on beams with open transverse crack. Crack location is identified by tracking variation in natural frequencies of a healthy and cracked beam

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