A miniature piezoelectric ultrasonic motor based on circular bending vibration mode

2000 ◽  
Vol 5 (4) ◽  
pp. 325-330 ◽  
Author(s):  
S. Dong ◽  
S. Wang ◽  
Wenjiang Shen ◽  
Longtu Li
Keyword(s):  
Vibration Mode ◽  
Ultrasonic Motor ◽  
Bending Vibration ◽  
Piezoelectric Ultrasonic Motor

Computer Simulation and Modelling of 3D Travelling Wave Ultrasonic Motor Using a Flexural Vibration Ring Transducer

2013 ◽  
Vol 307 ◽  
pp. 31-41
Author(s):  
M. Shafik ◽  
B. Nyathi ◽  
S. Fekkai
Keyword(s):  
Flexural Vibration ◽  
Experimental Tests ◽  
Maximum Load ◽  
Travelling Wave ◽  
Ultrasonic Motor ◽  
Housing Unit ◽  
Bending Vibration ◽  
Element Analysis ◽  
Thermoplastic Material ◽  
Piezoelectric Ultrasonic Motor

This paper presents a 3D piezoelectric ultrasonic motor using a single Flexural Vibration Ring Transducer. The motor consists of three main parts, the rotor, the stator and the housing unit. The stator is a piezoelectric transducer ring made from PZT S42 material. Three steel rods and a magnet were designed to support the rotor. The rotor is a sphere of metal that rests on the stator intersecting at the tips of the steel rods and the magnet. The housing unit is made of Perspex, a transparent thermoplastic material. Longitudinal and bending vibration modes, of oscillating structures are superimposed in the motor, generating elliptical micro motions at the driving tips. Pressing the rotor against the stator tips the micro motions are converted into a 3D rotational motion, via the friction between the tips of the three rods and the rotor. The motor structures, working principles, design and finite element analysis are discussed in this paper. A prototype of the motor was fabricated and its characteristics measured. Experimental tests show typical speed of movement equal to 35 revolutions per minute, a resolution of less than 5μm and maximum load of 3.5 Newton.

A type of dual-rotor hybrid ultrasonic motor based on vibration of four side panels

2016 ◽  
Vol 28 (14) ◽  
pp. 1916-1924 ◽  
Author(s):  
Lin Yang ◽  
Xingxing Zhu ◽  
Sisi Di
Keyword(s):  
Torsional Vibration ◽  
Vibration Mode ◽  
Longitudinal Vibration ◽  
Piezoelectric Ceramics ◽  
Ultrasonic Motor ◽  
Outer Diameter ◽  
Operating Voltage ◽  
Vibration Modes ◽  
Bending Vibration ◽  
Longitudinal Vibration Mode

Based on vibration of four side panels, a type of dual-rotor hybrid ultrasonic motor without using the torsional piezoelectric ceramics polarized along the circumferential direction is presented. The first longitudinal and the first bending vibration modes of the four side panels are used to indirectly excite the first longitudinal and the second torsional vibration modes of the stator cylinder. There are rectangle piezoelectric ceramics bonded on both sides of the four side panels, which are uniformly distributed along the circumference of the stator cylinder. One pair of panels on the opposite side is used to indirectly excite the first longitudinal vibration mode of the stator cylinder, and the other pair is used to indirectly excite the second torsional vibration mode. The simulation results, using finite element method software Workbench, reveal the operating principles, and the optimal structure is proposed. The appearance size of the prototype is 27.2 mm × 27.2 mm × 70 mm, while the outer diameter of the stator cylinder is 20 mm. The working frequency of the prototype measured in experiment is 44.7 KHz, which is consistent with the numerical results. According to the major mechanical measurement at 450 Vp−p operating voltage and 3.46 N preload, the stalling torque of the prototype is 8 mN·m and the no-load speed is 140 r/min. The experimental results indicate that the motor can operate in the first longitudinal and the second torsional coupled vibration modes transformed from the first longitudinal and the first bending vibration modes of four side panels.

Rotary Ultrasonic Motor Using Longitudinal and Bending Modes and its Analysis

2011 ◽  
Vol 474-476 ◽  
pp. 1696-1700
Author(s):  
Jun Kao Liu ◽  
Ying Xiang Liu ◽  
Wei Shan Chen ◽  
Sheng Jun Shi
Keyword(s):  
Vibration Mode ◽  
Longitudinal Vibration ◽  
Ultrasonic Motor ◽  
Vibration Modes ◽  
Bending Vibration ◽  
Resonant Frequencies ◽  
Working Principle ◽  
Longitudinal Vibration Mode ◽  
Bending Modes ◽  
Double Head

A rotary ultrasonic motor using longitudinal and bending vibration modes is proposed in this study. The proposed motor contains two exponential shape horns located on two ends, and the end tips of the horns are used as the driving feet. Two groups of PZT elements (Longitudinal PZT and Bending PZT) are clamped in the middle of the motor by a double head flange bolt to excite the longitudinal vibration mode and bending vibration mode of the motor, respectively. By the composing of the longitudinal and bending vibration modes, elliptical trajectory vibrations can be generated on the end tips of the horns, which have the same rotation directions and can driving the rotor together by frictional force. After the introducing of the working principle, modal analysis is developed to tune the resonant frequencies of the longitudinal and bending vibration modes to be close with each other. At last, transient analysis is developed to gain the vibration characteristics of the motor, and the gained elliptical trajectory motions of particles on the driving parts verify the feasibility of the proposed design.

scholarly journals Design and Performance Evaluation of a Single-Phase Driven Ultrasonic Motor Using Bending-Bending Vibrations

Micromachines ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 853
Author(s):  
Dongmei Xu ◽  
Wenzhong Yang ◽  
Xuhui Zhang ◽  
Simiao Yu
Keyword(s):  
Single Phase ◽  
Oblique Line ◽  
Ultrasonic Motor ◽  
Vibration Modes ◽  
Bending Vibrations ◽  
Bending Vibration ◽  
Output Performance ◽  
Resonance Frequencies ◽  
And Performance ◽  
Line Trajectory

An ultrasonic motor as a kind of smart material drive actuator has potential in robots, aerocraft, medical operations, etc. The size of the ultrasonic motor and complex circuit limits the further application of ultrasonic motors. In this paper, a single-phase driven ultrasonic motor using Bending-Bending vibrations is proposed, which has advantages in structure miniaturization and circuit simplification. Hybrid bending vibration modes were used, which were excited by only single-phase voltage. The working principle based on an oblique line trajectory is illustrated. The working bending vibration modes and resonance frequencies of the bending vibration modes were calculated by the finite element method to verify the feasibility of the proposed ultrasonic motor. Additionally, the output performance was evaluated by experiment. This paper provides a single-phase driven ultrasonic motor using Bending-Bending vibrations, which has advantages in structure miniaturization and circuit simplification.

The Design and Characteristics of Disk-Type Ultrasonic Motor Using Complex Vibration Mode

2006 ◽  
Vol 338 (1) ◽  
pp. 33-40
Author(s):  
Kee-Joe Lim ◽  
Jong-Sub Lee ◽  
Seong-Hwa Kang ◽  
Sung-Hee Park ◽  
Yong-Jin Yun ◽  
...  
Keyword(s):  
Vibration Mode ◽  
Ultrasonic Motor

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.

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