scholarly journals Design of a Single and Dual Hybrid Piezoelectric Motors

2020 ◽  
Vol 25 (2) ◽  
pp. 236-242
Author(s):  
Yung Ting ◽  
Kai-Chao Chang ◽  
Chih-Hsuan Yu ◽  
Amelia Sugondo
Keyword(s):  
Structure Design ◽  
Driving Frequency ◽  
Control Methods ◽  
Piezoelectric Motor ◽  
Trial And Error ◽  
Vibration Effect ◽  
Expected Performance ◽  
Piezoelectric Motors ◽  
Hybrid Motor ◽  
Two Hybrid

In this paper, a new hybrid piezoelectric motor was developed. A range of degeneracy was found to obtain multiple choice of resonance frequency by adjusting the length of the elastic blocks neighboring to the longitudinal and torsional vibrators. A template was implemented in between the longitudinal and torsional vibrators to decrease the mutual vibration effect that effectively makes the calculated and actual driving frequency nearly close. Such configuration was instrumental to preserve the expected performance and reduce the trial-and-error design overhaul process of the elastic blocks. Moreover, a dual hybrid motor was easily formed by butting each stator of the two hybrid motors together with a rotor in the middle. Case studies of both single and dual hybrid motors are presented with both simulation and experimental results to demonstrate the structure design and the degeneracy approach. Besides the convenience of structurally combining two single hybrid motors to enhance the output, it was interesting to find out whether the proposed dual hybrid motor can significantly increase either the speed or torque by using different phase control methods. Therefore, using the dual hybrid motor provides a great advantage by providing an option for pursuing higher speed or larger torque output for certain applications.

Assembling and testing of quasi-static hybrid piezoelectric motor based on electroactive lubrication principle

2013 ◽  
Vol 62 (2) ◽  
pp. 237-250
Author(s):  
Jean-Francois Rouchon ◽  
Dominique Harribey ◽  
Duc-Hoan Tran ◽  
Roland Ryndzionek ◽  
Łukasz Sienkiewicz ◽  
...  
Keyword(s):  
Power Supply System ◽  
Piezoelectric Actuators ◽  
Security Requirements ◽  
Motor Power ◽  
Piezoelectric Motor ◽  
Working Cycle ◽  
Piezoelectric Motors ◽  
Novel Concept ◽  
Hybrid Motor ◽  
Very High

Abstract The presented paper concerns a novel concept of hybrid piezoelectric motor based on electroactive lubrication principle. Its structure is combined of quasi-static and resonance piezoelectric actuators, synchronizing their work to generate the rotary movement. The hybrid motor topology is compared to the existing piezoelectric motors, regarding its field of applications in embedded systems with very high security requirements. The electroactive lubrication principle is briefly presented with regards to optimization of the hybrid motor. The performance principle of the hybrid motor is described in terms of its working cycle. The assembling process of the prototype hybrid motor is briefly explained with emphasis put on the frequency and impedance tuning of the applied quasi-static and resonance piezoelectric actuators. Next, the hybrid motor power supply system is described and chosen measured performance characteristics are presented. Finally, conclusions concerning the features of the tested prototype hybrid motor and possible solutions of the faced issues, during assembling and testing, are presented.

Design of a Kind of Non-Resonant Linear Piezoelectric Motor

2013 ◽  
Vol 459 ◽  
pp. 418-423 ◽  
Author(s):  
Xi Fu Chen ◽  
Wei Qing Huang ◽  
Ji Quan Luo ◽  
Jing Jing Xu
Keyword(s):  
Optimization Design ◽  
Maximum Velocity ◽  
Piezoelectric Motor ◽  
Element Analysis ◽  
Mechanism Model ◽  
Flexible Arm ◽  
Wide Range ◽  
Piezoelectric Motors ◽  
Amplification Mechanism ◽  
Trajectory Equation

A type of drive foot with displacement amplification was proposed based on analysis of the friction drive principle of the non-resonant linear piezoelectric motors. Firstly, the displacement amplification mechanism of the drive foot was carried on and the elliptical trajectory equation of the drive tip was deduced through the mechanism model of the drive foot. The optimization design of main structure parameters was conducted with finite element analysis software to analyze the influences of displacement amplification. The simulation results showed that the maximum magnification factor can be obtained when H(the thickness of flexible arm) is 0.8mm and θ (the flexible angle) is 12°. A linear piezoelectric motor prototype was designed and fabricated, the experimental results indicated that this kind of motor can run steadily in a wide range (the operation bandwidth is beyond 1kHz) and that the thrust can be 0.35N and the maximum velocity can be 2.5mm/s when the operation frequency is 4kHz and the operation voltage is 90V.

scholarly journals A Novel Piezoelectric Ultrasonic Biological Micro-Dissection Device Based on Flexure Mechanism for Suppressing Vibration

2020 ◽  
Author(s):  
Haibo Huang ◽  
Yifan Pan ◽  
Yan Pang ◽  
Hao Shen ◽  
Xiwei Gao ◽  
...  
Keyword(s):  
Vibration Suppression ◽  
Simulation Analysis ◽  
Tissue Sample ◽  
Design Parameters ◽  
Driving Frequency ◽  
Lateral Vibration ◽  
Suppression Effect ◽  
Flexure Mechanism ◽  
Vibration Effect ◽  
Wide Range

Biological micro-dissection has a wide range of applications in the field of molecular pathology. The current laser-assisted dissection technology is expensive, and laser radiation can lead to sample contamination. As an economical and pollution-free micro-dissection method, piezoelectric ultrasonic micro-dissection has a wide application prospect. However, the performance of the current piezoelectric ultrasonic micro-dissection technology is unsatisfactory. In this paper, a novel piezoelectric ultrasonic micro-dissection device based on a flexure mechanism is proposed in order to solve the problems of low dissecting precision and excessive wear of the dissecting needle caused by the harmful lateral vibration of the current piezoelectric ultrasonic micro-dissection device. By analyzing the flexibility of flexure hinge, the type of flexure beam and the optimal design parameters are determined. Through comparing the harmonic response simulation analysis of the micro-dissection device based on a flexure mechanism and the traditional micro-dissection device without the flexure mechanism, the newly designed micro-dissection device achieves the best vibration effect when the driving frequency is 28kHz, compared with the traditional micro-dissection device, the lateral vibration suppression effect is improved by 68%. Then, based on the 3D printing technology, a prototype of a novel micro-dissection device was produced, and its performance was tested. It was found that the flexure mechanism did indeed suppress the lateral vibration of the needle tip. Finally, the experiments of 5μm thick paraffin-embedded rat liver sections were carried out, and the effects of different dissecting parameters on the dissecting effect were analyzed, and the optimal dissecting parameters were obtained. By comparing the dissecting effects of the tissue sample and the wear condition of the needle tip between the novel micro-dissection device and the traditional micro-dissection device under their optimal dissecting parameters, it is proved that the suppression of harmful lateral vibration not only significantly improves the dissecting effect, but also improves the service life and durability of the dissecting needle, which is beneficial to reduce the equipment costs.

scholarly journals Design features of piezoelectric motors

2012 ◽  
Vol 16 (6) ◽  
Author(s):  
A.P. Miroshnichenko ◽  
A.E. SHorohov
Keyword(s):  
Piezoelectric Motor ◽  
Design Features ◽  
Piezoelectric Motors ◽  
Starting Torque ◽  
Application Design

The features of the piezoelectric motor designs with improved efficiency and starting torque are considered, suggested a version of application design, which allows doubling the speed while maintaining starting torque

Optimization design framework: Guiding the design of nonlinear structures with experimental data and machine learning

2020 ◽  
Vol 64 (1-4) ◽  
pp. 853-859
Author(s):  
Jiaming Zhou ◽  
Longlei Dong ◽  
Jian Yan ◽  
Wei Guan
Keyword(s):  
Machine Learning ◽  
Experimental Data ◽  
Distribution System ◽  
Optimization Design ◽  
Structure Design ◽  
Nonlinear Structures ◽  
Design Framework ◽  
Trial And Error ◽  
Nonlinear Structure ◽  
Machine Learning Model

The optimization design of complex nonlinear structures mainly relies on expert experiences and trial and error. In this paper, we proposed an optimization design framework for nonlinear structures by combining experimental data and machine learning. The framework can search the entire design space and guide the next experiment by machine learning model until the optimization targets are met. To demonstrate the effectiveness and practicability of this framework, we have optimized the damping efficiency and principal resonance frequency (PRF) of an Electricity Distribution System (EDS) with eight rubber isolators. The results show that the design targets of the optimized structure are consistent with the experimental results after two iterations. This framework is able to guide and accelerate nonlinear structure design and has significant value for engineering applications.

Improvement of Degeneracy for Hybrid Transducer

2009 ◽  
Author(s):  
Yung Ting ◽  
Le Ba Tan ◽  
Gunawan Hariyanto ◽  
Bing-Kuan Hou ◽  
Lang Van Thang ◽  
...  
Keyword(s):  
Optimal Design ◽  
Resonant Frequency ◽  
Structure Design ◽  
Primary Task ◽  
Configuration Design ◽  
Driving Frequency ◽  
Transducer Design ◽  
And Performance

In this paper, a new design of hybrid transducer consisting of individual longitudinal and torsional vibrators is investigated. Degeneracy approach for searching the same resonant frequency of both the longitudinal and torsional ceramic vibrators is the primary task of hybrid transducer design. In this study, a new structure is proposed so that a range of degeneracy can be found, which provides more possible configuration design of the longitudinal and torsional vibrators. A case study is presented to demonstrate the structure design and the approach of degeneracy. Also, an optimal design of large torque is achieved based on the searched range of degeneracy. With the determined driving frequency for both the longitudinal and torsional vibrators, simulation is carried out to verify the function and performance of the transducer.

scholarly journals A Novel Low-Frequency Piezoelectric Motor Modulated by an Electromagnetic Field

Actuators ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 85 ◽  
Author(s):  
Jichun Xing ◽  
Yong Qin
Keyword(s):  
Magnetic Field ◽  
Natural Frequencies ◽  
Low Frequency ◽  
Dynamic Equations ◽  
Driving Frequency ◽  
Piezoelectric Motor ◽  
Driving System ◽  
Driving Mode ◽  
Driving Signal ◽  
The Ideal

For expanding the driving mode of the piezoelectric motor, a novel piezoelectric motor modulated by a magnetic field is proposed. This driving system combines piezoelectric driving and magnetic modulation together and can transform the reciprocating swing of the stator into step running of the rotor via the intermittent magnetic clamping between the rotor and stator. For investigating the inherent character of dynamics, the dynamic equations of key parts of the driving system are established. The natural frequencies and mode functions of the driving system are solved. A prototype was fabricated to prove the dynamic analysis and measure the output characteristic. The results show that the nature of the frequency measured from the test is coincident with theoretical analysis. In addition, by applying the driving frequency of 3 Hz, the voltage of the modulating signal of 4.5 V, the phase difference α between driving signal and modulating signal of 30°, the ideal outputs are 0.1046 rad/min for velocity and 0.405 Nmm for torque.

scholarly journals A tutorial on the use of control methods in ice-sheet modeling

1993 ◽  
Vol 39 (131) ◽  
pp. 91-98 ◽  
Author(s):  
Douglas R. MacAyeal
Keyword(s):  
Boundary Conditions ◽  
Control Method ◽  
Ice Sheet ◽  
Physical Parameters ◽  
Control Methods ◽  
Trial And Error ◽  
Tuning Parameters ◽  
Ice Sheet Modeling ◽  
Programming Effort ◽  
Model Tuning

AbstractControl methods are recommended as an efficient means to estimate undetermined physical parameters and boundary conditions and, in so doing, to improve the fidelity of a given ice-sheet flow model to specific ice-sheet velocity observations. To accomplish this task, the underlying dynamics of the model are inverted. This permits model-tuning adjustments to be represented explicitly in terms of model/observation misfit. Advantages of the control method over trial-and-error techniques in common use are: (1) it is readily automated with little additional programming effort, (2) the tuning parameters and boundary conditions it achieves are assured to give the best possible fit between model and observation, and (3) it quantifies the uncertainty of tuning parameters and boundary conditions in situations where they are not uniquely determined.

Unified Approach to Optimization of Tread Pattern Shape and Cross-Sectional Contour of Tires

2010 ◽  
Vol 38 (4) ◽  
pp. 276-285 ◽  
Author(s):  
Yoshihiro Tanaka ◽  
Katsutoshi Ohishi
Keyword(s):  
Structure Design ◽  
Design Stage ◽  
Trial And Error ◽  
Cross Sectional ◽  
Pattern Design ◽  
Optimization System ◽  
Performance Requirements ◽  
Design Variables ◽  
Pattern Shape ◽  
Design Factors

Abstract During the design stage, tire designers have to use trial and error to decide on the design factors in order to satisfy performance requirements, and this involves a great deal of time and expense. Optimization is one of the methods which can be used effectively and efficiently to improve tire performance. There is a lot of literature available about optimal tire contour and structure design. On the other hand, there is little published information available about optimal tread pattern design. In particular, there is little information available about the interaction between optimal tire contour and tread pattern design. In this study, we constructed a tire optimization system in which the design factors of cross-sectional contour and tread pattern shape could both be dealt with as design variables at the same time. This optimization system was then applied to and verified for an actual tire design problem.

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