scholarly journals Development of a Rotary Ultrasonic Motor with Double-Sided Staggered Teeth

Micromachines ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 824
Author(s):  
Xiaohui Yang ◽  
Dongdong Zhang ◽  
Rujun Song ◽  
Chongqiu Yang ◽  
Zonggao Mu
Keyword(s):  
Finite Element Method ◽  
Traveling Wave ◽  
Piezoelectric Ceramic ◽  
Ultrasonic Motor ◽  
Maximum Speed ◽  
Maximum Output ◽  
The Finite Element Method ◽  
Motion Trajectories ◽  
Output Torque ◽  
Conventional Structure

Based on the conventional structure of traveling wave ultrasonic motor, a rotary ultrasonic motor with double-sided staggered teeth was proposed. Both sides of the stator could be used to actuate the rotors to rotate and output torque. Moreover, the staggered teeth in the stator could be dedicated to accommodating the piezoelectric ceramic chips. Under the excitation of two alternating voltages with a 90° phase difference, a traveling wave could be generated in the ring-like stator. Then, a rotary motion could be realized by means of the friction between the rotors and the driving teeth of the stator. The finite element method was adopted to analyze the motion trajectories of the driving tips. Moreover, the experimental results showed that the load-free maximum speed and maximum output torque of the prototype were 99 rpm and 0.19 N·m at a voltage of 150 Vp with a frequency of 28.25 kHz.

Power Harvesting from the Vibration-Induced by the Piezoelectric Stator of Traveling Wave Rotary Ultrasonic Motor

2011 ◽  
Vol 317-319 ◽  
pp. 616-620 ◽  
Author(s):  
Guang Qing Wang ◽  
Zhong Wei Zhao
Keyword(s):  
Energy Conversion ◽  
Analytical Model ◽  
Traveling Wave ◽  
Mechanical Energy ◽  
Ultrasonic Motor ◽  
Maximum Output ◽  
Induced Voltage ◽  
Power Harvesting ◽  
Conversion Model ◽  
The Relationship

In this article, a novel electro-mechanical energy conversion model of power harvesting from the vibration-induced the piezoelectric stator of the traveling wave rotary ultrasonic motor was proposed. Based on the curvature basis approach, the relationship between the deduced voltage and the mechanical stain induced by piezoelectric polarization was formulated. In addition to the relationships between the maximum induced voltages at the resonance frequency, the conversion energy density and the dimensions of the piezoelectric stator were also derived. The analytical model shows that the vibration-induced voltage is proportional to the exciting electrical voltage magnitude and square of height of the piezoelectric ceramic (PZT) but is inversely proportional to the permittivity of PZT and the damping coefficient of the stator. Some simulations and experimental results demonstrate that the maximum output voltage coincides with the energy conversion analytical model.

Research of a Ring-Type Linear Ultrasonic Motor

2011 ◽  
Vol 211-212 ◽  
pp. 254-258
Author(s):  
Jun Kao Liu ◽  
Wei Shan Chen ◽  
Zhen Yu Xue
Keyword(s):  
Traveling Wave ◽  
Transient Analysis ◽  
Ultrasonic Motor ◽  
Maximum Speed ◽  
Vibration Modes ◽  
Bending Vibration ◽  
Ring Type ◽  
Linear Ultrasonic Motor ◽  
Working Principle ◽  
Elliptical Motion

A new ring-type linear ultrasonic motor is proposed in this study. In this new design, bending vibration traveling wave is generated in a long ring by two groups of PZT ceramics bonded on the inner sides of the linear beams. Elliptical trajectory motions can be formed at particles on the teeth, which can realize the linear driving by frictional force. The working principle of the proposed design is introduced. Two bending vibration modes that have a phase difference of 90deg on space are analyzed. The elliptical motion trajectory of node on the tooth gained by the transient analysis verifies the excitation of bending traveling wave. A prototype motor is fabricated and measured, and a maximum speed of 15mm/s is reached.

The Design and Characteristics of a Novel Ultrasonic Motor

2006 ◽  
Vol 514-516 ◽  
pp. 1457-1461
Author(s):  
Kee Joe Lim ◽  
Oh Deok Kwon ◽  
Cheol Hyun Park ◽  
Jong Sub Lee ◽  
Seong Hwa Kang
Keyword(s):  
Finite Element Method ◽  
Applied Voltage ◽  
Piezoelectric Ceramic ◽  
Rotation Speed ◽  
Ultrasonic Motor ◽  
The Other ◽  
Lens System ◽  
Optical Lens ◽  
Rotation Direction ◽  
Auto Focusing

In this paper, the design and characteristics of a novel ultrasonic motor which is applicable to optical zoom or auto focusing operation of lens system for mobile phone are investigated. Its design and simulation of performances are carried out by FEM (Finite Element Method) commercial software. The shape of the motor is like square without one side, which is able to insert optical lens. Two sheets of piezoelectric ceramic are fixed to both sides of the two legs of an elastic body, respectively. To drive the ultrasonic motor, the voltage is applied to the two sheets of piezoelectric ceramic bonded to one leg. The rotation direction can be easily changed by switching the applied voltage to the piezoelectric sheets bonded to the other legs. The proto type of motor is fabricated and its outer size is 10*10*2 mm3 including the camera lens of which the diameter is 7.5 mm. Its power consumption is about 0.3 W and the rotation speed is adjustable from 10 to 200 rpm according to the applied voltage.

scholarly journals Underwater Spiral Wave Sound Source Based on Phased Array with Three Transducers

Sensors ◽  
2019 ◽  
Vol 19 (14) ◽  
pp. 3192
Author(s):  
Lu ◽  
Guo ◽  
Lan ◽  
Sun ◽  
Li ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Sound Source ◽  
Piezoelectric Ceramic ◽  
Phased Array ◽  
Fem Simulation ◽  
Spiral Wave ◽  
Sound Field ◽  
The Finite Element Method ◽  
The Relationship ◽  
Made In

This paper realizes an underwater spiral wave sound source by using three omni-directional spherical transducers with three different phases. The pressure distribution of the sound field for a phased array is derived using the superposition theory of sound field. The generation of spiral wave field is presented, the relationship between the performance of phased array sound field and the array parameters is analyzed, and also verified by the finite element method (FEM). A spiral wave sound source with three spherical piezoelectric ceramic transducers is then designed and fabricated based on FEM simulation, and the performance of the sound source is analyzed. Measurements are made in a reverberation pool, and the result shows that the fabricated spiral wave sound source is capable of producing a spiral sound wave. Under a frequency of 3.5 kHz, the phase directivity has a fluctuation of ±21°, and the amplitude directivity range is 4.3 dB, which verifies the realization of the spiral wave sound source.

Fundamental Study on Contact Behavior of Ultrasonic Motor

2005 ◽  
Author(s):  
Daichi Nakajima ◽  
Tomoyuki Ozawa ◽  
Takeshi Maeda ◽  
Michio Tsukui ◽  
Kohro Takatsuka ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Energy Efficiency ◽  
Finite Element ◽  
Frictional Force ◽  
Numerical Technique ◽  
Ultrasonic Motor ◽  
The Finite Element Method ◽  
Fundamental Study ◽  
Contact Behavior ◽  
Lining Material

We discuss the contact behavior between the stator and the lining material that sticks to the rotor of an ultrasonic motor. The ultrasonic motor is powered by the vibration of the stator and operates with a frictional force between the stator and the lining material. Therefore, it is important to examine the mechanism of the contact behavior to improve the energy efficiency and durability of the ultrasonic motor. We propose a numerical technique using the finite element method to examine the contact behavior between the stator and the lining material. Then, we compare the numerical example with the theoretical solution proposed by L. A. Galin and confirm the validity of our technique. Moreover, on the basis of incremental theory, we use our technique to numerically examine the complex contact behavior of the non-contact zone, slip zone and stick zone in a non-rotating rotor.

Design and Analysis of a Ring Type Traveling Wave Ultrasonic Motor Using Cantilever Type Composite Transducer

2009 ◽  
Vol 79-82 ◽  
pp. 1411-1414 ◽  
Author(s):  
Ying Xiang Liu ◽  
Jun Kao Liu ◽  
Wei Shan Chen ◽  
Sheng Jun Shi
Keyword(s):  
Traveling Wave ◽  
Transient Analysis ◽  
Ultrasonic Motor ◽  
Longitudinal Vibrations ◽  
Ring Type ◽  
Motion Trajectories ◽  
Bending Waves ◽  
New Type ◽  
Working Principle ◽  
Type Composite

To take advantage of merits of higher output-power and efficiency of bolt-clamped transducer, a ring type traveling wave ultrasonic motor using cantilever type composite transducer is proposed in this paper. In this new design, two cantilevers are set for the coupling between ring and transducer. Two standing bending waves (with phase difference of π/2 on time and space, respectively) are generated in the ring by the bending-longitudinal vibrations of transducer. Thus, a flexural traveling wave can be excited. The working principle of proposed motor is analyzed. The stator is designed and analyzed with FEM, and the motion trajectories of nodes on the teeth are analyzed. The results of transient analysis verify the theoretical feasibility of proposed design. The results of this paper could guide the development of this new type of motor.

scholarly journals Numerical optimization of the piezoelectric generators

2020 ◽  
Vol 10 (01n02) ◽  
pp. 2060016
Author(s):  
V. A. Chebanenko ◽  
I. V. Zhilyaev ◽  
A. N. Soloviev ◽  
A. V. Cherpakov ◽  
I. A. Parinov
Keyword(s):  
Finite Element Method ◽  
Numerical Optimization ◽  
Output Voltage ◽  
Optimization Problem ◽  
Optimization Technique ◽  
Maximum Output Power ◽  
Operating Conditions ◽  
Design Parameters ◽  
Maximum Output ◽  
The Finite Element Method

This paper presents the application of the Pareto-based multicriteria optimization technique to problems of increasing the efficiency of piezoelectric generators (PEGs). The optimization problem was solved for two types of generators: cantilever and stack. For the cantilever generator, the task was to optimize the design in such a way as to obtain the maximum output power for a given mechanical excitation. The optimization process was divided into several stages, which significantly reduced the amount of calculations. The task of optimizing the stack type for a given form of mechanical loading consisted in finding the geometric parameters of the generator at which the output voltage and power would be maximum. In the result of solving both problems, sets of geometric design parameters of PEGs were obtained, on the basis of which efficient transducers can be developed for specific operating conditions. It turned out that this technique is more suitable for optimizing the design of cantilever generators than for stack ones in given constraints. The solution of both problems was realized using the finite element method.

Rigid Contact Model of Ultrasonic Motor Based on Finite Element Method

2011 ◽  
Vol 105-107 ◽  
pp. 495-499
Author(s):  
Chun Rong Jiang ◽  
Long Jin ◽  
Min Qiang Hu ◽  
Rui Xia Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Traveling Wave ◽  
Ultrasonic Motor ◽  
Contact Length ◽  
Contact Model ◽  
Frictional Material ◽  
Rigid Contact ◽  
Contact Mechanism ◽  
Element Method

Rigid contact model of rotor/stator in ring type traveling wave ultrasonic motor without frictional material based on finite element method is proposed in this paper. First, the vibration of the stator is analyzed. Next, the rigid contact model is simulated by finite element method. Subsequently, the contact mechanism of the rotor/stator as well as performance of the ultrasonic motor is studied, and the performance of motors with two different kinds of rotor is compared. It is indicated that contact length of the rotor/stator along circumferential direction decreases from the outer to the inner edge and the stall torque increases and no-load speed decreases with preload force increasing. The result is identified as being useful in designing and analyzing the ultrasonic motor.

Design and Analysis of a Cylindrical Traveling Wave Ultrasonic Motor Using Composite Transducer

2009 ◽  
Vol 628-629 ◽  
pp. 103-108 ◽  
Author(s):  
Ying Xiang Liu ◽  
Jun Kao Liu ◽  
Wei Shan Chen ◽  
Sheng Jun Shi
Keyword(s):  
Traveling Wave ◽  
Flexural Vibration ◽  
Ultrasonic Motor ◽  
Vibration Modes ◽  
Motion Trajectories ◽  
Resonance Frequencies ◽  
New Type ◽  
Working Principle ◽  
Elliptical Motion ◽  
Sensitive Parameters

A cylindrical type traveling wave ultrasonic motor using composite transducer is proposed in this paper. A composite transducer is attached to the cylinder on its outer surface to excite two degenerate flexural vibration modes spatially and temporally orthogonal to each other in the cylinder. In this new design, a single transducer can excite the flexural traveling wave in the cylinder. Thus, an elliptical motion is achieved at the particle on the tooth. And the driving force is the frictional force between rotor and teeth. The working principle of proposed motor is analyzed. The cylinder and transducer are designed with FEM. The sensitive parameters of resonance frequencies of transducer and cylinder are gained with modal analysis. The resonance frequencies of two vibration modals of stator are degenerated, and the motion trajectories of nodes on the teeth are analyzed. The result of transient analysis shows that the trajectory of node on the tooth is nearly an ellipse. The results of this paper could guide the development of this new type of motor.

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