FE analysis and experimental evaluation of the performance of a travelling wave rotary motor driven by high power ultrasonic transducers

Iula, Antonio; Corbo, A.; Pappalardo, M.

doi:10.1016/j.sna.2010.03.037

Cited by 26 publications

(8 citation statements)

References 14 publications

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“…the impact drive actuator, direct drive actuator, inchworm actuator, and ultrasonic actuator. Each type of actuator has unique advantages, but the actuators also have shortcomings, for example, the limited working stroke of the direct drive actuator [15][16][17]; the wear, heat generation, and low resolution of the ultrasonic actuator [18][19][20]; and the complicated control system of the inchworm actuator [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Design and stepping characteristics of novel stick–slip piezo-driven linear actuator

Qin

Huang

Wang

et al. 2019

Smart Mater. Struct.

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A stick-slip piezo-driven linear actuator to output bidirectional motion is proposed. The actuator has a compact structure, with a length, width, and height of approximately 80, 80, and 20 mm in the X, Y, and Z directions, respectively. A prototype of the actuator was designed, fabricated, and analysed. An experimental system was established to evaluate the output performances of the actuator, including the stepping displacement and the ratio of backward motion. The experimental results indicated that the maximum speeds of the forward and reverse motions were 2.01 and 2.34 mm s −1 , respectively. The maximum vertical load was 380 g. The stepping displacement was 0.89 μm, with a control voltage of 20 V and a control-signal frequency of 220 Hz. When the driving frequency was >220 Hz, the actuator eliminated the backward motion under no load, and the step efficiency of the actuator reached 100%. The optimal working conditions of the actuator were a driving frequency of 220-300 Hz and a constant driving voltage of 100 V.

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Section: Introductionmentioning

confidence: 99%

Design and stepping characteristics of novel stick–slip piezo-driven linear actuator

Qin

Huang

Wang

et al. 2019

Smart Mater. Struct.

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“…A large rotating speed (3 500 rmin) is achieved and theoretical explanations are given. IULA, et al [9][10][11] , proposed a high-power travelling wave ultrasonic motor with several transducers, and its maximum speed and static torque are 116 rmin and 0.94 N•m, respectively. SATONOBU, et al [12] , proposed an ultrasonic motor with symmetric hybrid transducers and pointed out the spring selection is the key to the motor's output torque.…”

Section: Introduction *mentioning

confidence: 99%

Principle and experimental verification of novel dual driving face rotary ultrasonic motor

Yang

et al. 2013

Chin. J. Mech. Eng.

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Existing rotary ultrasonic motors operating in extreme environments cannot meet the requirements of good environmental adaptability and compact structure at same time, and existing ultrasonic motors with Langevin transducers show better environmental adaptability, but size of these motors are usually big due to the radial arrangement of the Langevin transducers. A novel dual driving face rotary ultrasonic motor is proposed, and its working principle is experimentally verified. The working principle of the novel ultrasonic motor is firstly proposed. The 5th in-plane flexural vibration travelling wave, excited by the Langevin transducers around the stator ring, is used to drive the rotors. Then the finite element method is used in the determination of dimensions of the prototype motor, and the confirmation of its working principle. After that, a laser Doppler vibrometer system is used for measuring the resonance frequency and vibration amplitude of the stator. At last, output characteristics of the prototype motor are measured, environmental adaptability is tested and performance for driving a metal ball is also investigated. At room temperature and 200 V(zero to peak) driving voltage, the motor's no-load speed is 80 r/min, the stalling torque is 0.35 N•m and the maximum output power is 0.85 W. The response time of this motor is 0.96 ms at the room temperature, and it decreases or increases little in cold environment. A metal ball driven by the motor can rotate at 210 r/min with the driving voltage 300 V(zero to peak). Results indicate that the prototype motor has a large output torque and good environmental adaptability. A rotary ultrasonic motor owning compact structure and good environmental adaptability is proposed, and lays the foundations of ultrasonic motors' applications in extreme environments.

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“…Traveling waves are generated in the stators of the traveling wave piezoelectric actuators (TWPAs), and micro ellipse traces on the surface of stator are converted to macro movement of the runner by the friction between the stator and runner [45]- [47]. As the most developed resonant PAs, they have been put into commercial application in cameras.…”

Section: Introductionmentioning

confidence: 99%

An Easily Fabricated Linear Piezoelectric Actuator Using Sandwich Longitudinal Vibrators With Four Driving Feet

et al. 2019

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A piezoelectric actuator using three sandwich longitudinal vibrators is proposed and tested. The two horizontal vibrators are parallel to each other and orthogonal to the vertical vibrator. The ends of the two horizontal vibrators serve as the four driving feet. The actuator has a simple fabricating process, which will shorten the period of fabrication. Two modes of the actuator are used to get the elliptical trajectories on the driving feet. The frequencies of the two modes are tuned to be about 21.60 kHz with modal analysis by the finite element method (FEM). The operating principle is also examined with transient analysis by FEM. A prototype is fabricated and its vibration characteristics are verified by using a scanning laser Doppler vibrometer. The prototype shows the best mechanical performance with the optimum working frequency and phase difference of 18.50 kHz and 60 • , respectively. The typical output of the prototype is a no-load speed of 439.41 mm/s, a maximum thrust of 40 N, and a maximum power of 5.01 W at the voltage of 200 V P−P . The mechanical characteristics of the prototype show that the exciting voltages can be used for the speed control due to the approximately linear relationship between them.INDEX TERMS Linear piezoelectric actuator, resonant state, sandwich longitudinal vibrators, vibration test.

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FE analysis and experimental evaluation of the performance of a travelling wave rotary motor driven by high power ultrasonic transducers

Cited by 26 publications

References 14 publications

Design and stepping characteristics of novel stick–slip piezo-driven linear actuator

Design and stepping characteristics of novel stick–slip piezo-driven linear actuator

Principle and experimental verification of novel dual driving face rotary ultrasonic motor

An Easily Fabricated Linear Piezoelectric Actuator Using Sandwich Longitudinal Vibrators With Four Driving Feet

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