A Development of Miniaturized Piezoelectric Actuator System for Mobile Smart Structures

2006 ◽  
Vol 326-328 ◽  
pp. 1395-1398 ◽  
Author(s):  
In Pil Kang ◽  
Hyo Byung Chae ◽  
Ki Hoon Park ◽  
Kwang Joon Yoon ◽  
Li Li Xin ◽  
...  
Keyword(s):  
Piezoelectric Actuator ◽  
Smart Structures ◽  
Actuation Voltage ◽  
Smart Material ◽  
Smart Structure ◽  
Hardware System ◽  
Compact Size ◽  
Actuator System ◽  
Real Hardware ◽  
Self Powered

A smart material actuator is required for a smart structure having multifunctional performance. Among the smart material actuators, piezoelectric actuator is known for its excellent large force generation in broad bandwidth in a compact size. However it needs relatively large actuation voltage requiring a bulky hardware system. This study is mainly concerned to develop a self-powered miniaturized piezoelectric actuator driver (MIPAD) controlled by a radio controller for small sized piezoelectric smart structures. It can receive command from other microprocessors or a remote radio controller. We designed a real hardware and it demonstrated good performances even though the driving system was very small. The MIPAD is expected to minimize the weight and size of the piezoelectric actuator system and it can be easily embedded into mobile smart structures.

A Development of Miniaturized Piezoelectric Actuator System for Mobile Smart Structures

2006 ◽  
pp. 1395-1398 ◽  
Author(s):  
In Pil Kang ◽  
Hyo Byung Chae ◽  
Ki Hoon Park ◽  
Kwang Joon Yoon ◽  
Sang Yoon Lee ◽  
...  
Keyword(s):  
Piezoelectric Actuator ◽  
Smart Structures ◽  
Actuator System

Freeze–thaw actuator and applications

2018 ◽  
Vol 29 (10) ◽  
pp. 2267-2276
Author(s):  
Niell Elvin ◽  
Alex Elvin
Keyword(s):  
Piezoelectric Element ◽  
Electrical Energy ◽  
Smart Material ◽  
Stored Energy ◽  
Water Ice ◽  
Freeze Thaw ◽  
Thaw Cycle ◽  
Land Mass ◽  
Freeze Thaw Cycle ◽  
Self Powered

Significant portions of the earth’s land mass undergo annual freeze–thaw cycles, and although water is abundant and practically a free resource, the possibility of using the water–ice phase transition for smart material applications and actuators for machines has not been studied. This article details some of the characteristics of a freeze–thaw actuator, compares it to other smart material actuators, and presents three experimental demonstrations of its potential for engineering applications. The first application is the conversion of the freeze cycle into electrical energy by coupling the freeze–thaw actuator with a bistable piezoelectric element. The second application demonstrates the ability to store energy mechanically and keep a count of multiple freeze–thaw cycles. This stored energy can then be released after a preset number of freeze–thaw cycles. The third application demonstrates a self-powered mechanism that is capable of moving itself one body length per freeze–thaw cycle.

Design of Switching Damping Control for Smart Structure Self-Powered Adaptive Damping Control

2010 ◽  
Author(s):  
Chao-Ting Wu ◽  
Chih-Hsiang Yang ◽  
Wen-Jong Wu ◽  
Chih-Kung Lee
Keyword(s):  
Smart Structure ◽  
Control Circuit ◽  
System Stability ◽  
Voltage Source ◽  
Storage Capacitor ◽  
Control Voltage ◽  
Controlled Switching ◽  
Damping Control ◽  
Structure Vibration ◽  
Self Powered

This paper presents a new damping control circuit which named adaptive VSPD [1] (adaptive velocity-controlled switching piezoelectric damping) that can be used to vary control voltage of VSPD damping circuit with the amplitude variation and be self-powered itself as well. Since the voltage source in the VSPD damping control circuit may cause a stability problem at small vibrations, an adaptive voltage source can be designed to purposely solve this problem. The design concept of an adaptive VSPD unit is not only to dampen the residual vibration but also to maintain the system stability by incorporating an adaptive control voltage. In fact, the energy needed for the extra voltage source within the control circuit can be provided by the storage capacitor and the energy stored can be harvested from the structure vibration energy. With this design, the damping performance can be maximized while maintaining system stability at the same time and also does not add complexity to the circuit. All the theoretical modeling, simulation and experimental results will all be detailed in this paper.

Fabrication and Characterization of Vertical Travel Linear Microactuator

2004 ◽  
Author(s):  
Risaku Toda ◽  
Eui-Hyeok Yang
Keyword(s):  
Piezoelectric Actuator ◽  
Actuation Voltage ◽  
Silicon On Insulator ◽  
Test Bed ◽  
Device Structure ◽  
Beam Geometry ◽  
Out Of Plane ◽  
Fabrication And Characterization ◽  
Vertical Travel

This paper describes design, fabrication and characterization of a proof-of-concept vertical travel linear microactuator designed to provide out-of-plane actuation for high precision positioning applications in space. The microactuator is designed to achieve vertical actuation travel by incorporating compliant beam structures within a SOI (Silicon on Insulator) wafer. Device structure except for the piezoelectric actuator is fabricated on the SOI wafer using Deep Reactive Ion Etch (DRIE) process. Incremental travel distance of the piezoelectric actuator is adjustable at nanometer level by controlling voltage. Bistable beam geometry is employed to minimize initial gaps between electrodes. The footprint of an actuator is approximately 2 mm × 4 mm. Actuation is characterized with LabVIEW-based test bed. Actuation voltage sequence is generated by the LabVIEW controlled power relays. Vertical actuation in the range of 500 nm over 10-cycle was observed using WYKO RST Plus Optical Profiler.

scholarly journals Research on Spillover Effects for Vibration Control of Piezoelectric Smart Structures by ANSYS

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Xingjian Dong ◽  
Zhike Peng ◽  
Wenming Zhang ◽  
HongXing Hua ◽  
Guang Meng
Keyword(s):  
Finite Element ◽  
Closed Loop ◽  
Parametric Design ◽  
Smart Structures ◽  
Element Model ◽  
Spillover Effects ◽  
Smart Structure ◽  
Control Laws ◽  
Actual Structure ◽  
New Approach

To control vibration of a piezoelectric smart structure, a controller is usually designed based on a reduced order model (ROM) of the system. When such a ROM based controller operates in closed loop with the actual structure, spillover phenomenon occurs because the unmodeled dynamics, which are not included in ROM, will be excited. In this paper, a new approach aiming at investigating spillover effects in ANSYS software is presented. By using the ANSYS parametric design language (APDL), the ROM based controller is integrated into finite element model to provide an accurate representation of what will happen when the controller is connected to the real plant. Therefore, the issues of spillover effects can be addressed in the closed loop simulation. Numerical examples are presented for investigating spillover effects of a cantilever piezoelectric plate subjected to various types of loading. The importance of considering spillover effects in closed loop simulation of piezoelectric smart structures is demonstrated. Moreover, the present study may provide an efficient method especially beneficial for preliminary design of piezoelectric smart structure to evaluate the performance of candidate control laws in finite element environment considering spillover effects.

Compact size ultrasonic linear motor using a dome shaped piezoelectric actuator

2012 ◽  
Vol 28 (2-3) ◽  
pp. 123-131 ◽  
Author(s):  
Man-Soon Yoon ◽  
Neamul Hayet Khansur ◽  
Kyung-Sun Lee ◽  
Young Min Park
Keyword(s):  
Piezoelectric Actuator ◽  
Linear Motor ◽  
Compact Size
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