Performance Analysis of a Travelling-Wave Ultrasonic Motor under Impact Load

Huang, Jiahan; Sun, Dongming

doi:10.3390/mi11070689

Cited by 12 publications

(4 citation statements)

References 30 publications

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“…TPSPM is widely used in engineering applications. This method benefits from the advantage of fast response and high braking force of an ultrasonic motor power-off selflocking [22]. However, when using this method for positioning, a large torsional vibration of the shaft and sliding motion between the stator and the friction material occurs, resulting in poor positioning accuracy and long positioning time.…”

Section: Characteristics Of Tpspmmentioning

confidence: 99%

Research on Fast and Precise Positioning Strategy of an Ultrasonic Motor Based on the Ultrasonic Friction Reduction Theory

et al. 2022

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To address the problems of the large positioning error and long positioning time of the traditional positioning strategy, namely, the two-phase simultaneous power-off method (TPSPM), a new positioning strategy, called the first single-phase then two-phase power-off method (FSPTTPPM), based on the ultrasonic friction reduction theory, has been proposed in this work. This method realizes zero sliding displacement between the friction material and the stator during the torsional oscillation of the shaft by controlling the driving circle frequency and the duration of the single-phase power-off period, which reduces the deviation of the displacement reservation value. In order to verify the correctness of the driving mechanism, a test platform has been built, and two positioning strategies have been used for experimental verification. The following experimental results have been obtained: compared to TPSPM, FSPTTPPM has the advantages of higher positioning accuracy and short positioning time. In terms of the positioning accuracy, the relative errors of the displacement reservation values of FSPTTPPM and TPSPM vary with the initial angular velocity (0.24 to 1.18 rad/s) in the range of −0.4 to 0.1 and −0.8 to 0.8, respectively. In addition, the relative error of the displacement reservation value is closer to zero than that of TPSPM at the same initial angular velocity. In terms of the positioning time, when the initial angular velocity is greater than 0.7 rad/s, the positioning time of the FSPTTPPM is approximately 10 ms smaller than that of the TPSPM.

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Section: Characteristics Of Tpspmmentioning

confidence: 99%

Research on Fast and Precise Positioning Strategy of an Ultrasonic Motor Based on the Ultrasonic Friction Reduction Theory

et al. 2022

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“…In this respect, many scholars have studied the subjects related to the reliability of ultrasonic motors from various perspectives (Huang and Sun, 2020;Liu et al, 2021). In piezoelectric materials, Okayasu et al (2009Okayasu et al ( , 2010 investigated the variation of zirconate titanate piezoelectric ceramic's electrical and electromechanical coupling characteristics with cyclic loading and analyzed the correlation between electric domain conversion and ceramic crack occurrence.…”

Section: Introductionmentioning

confidence: 99%

A novel traveling wave rotary ultrasonic motor with piezoelectric backup function

Lin

Yang³

et al. 2023

Journal of Intelligent Material Systems and Structures

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To fulfill high-reliability requirements for aerospace applications, a novel traveling wave rotary ultrasonic motor with a piezoelectric backup function (Backup motor) is proposed in this paper. The backup function is enabled by the addition of a set of piezoelectric ceramics (PZT). Based on the ultrasonic motor of the CSX-60, a cantilever-tooth backup motor (CTBM) is designed and fabricated. This backup motor can operate in three working modes according to the excitation settings of PZTs, namely normal mode, backup mode, and enhanced mode. The relationships between three working modes’ performances are analyzed by finite element (FE) analysis and prototype tests. The results show that backup mode, as the substitution, can nearly reach normal mode’s performance, while enhanced mode is obviously higher than others. Furthermore, a modified backup motor with straight-tooth (STBM) and different sizes of PZT is designed and tested as a supplement to verify the feasibility of the proposal. In addition, the effect of stress reduction on PZT damage is verified by extreme working experiments. The comparison between the two types of motors indicates that STBM can provide better frictional drive performance. This proposal can provide a new reference for the subsequent reliability study of ultrasonic motors.

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“…According to vibration state, they can be classified into resonance piezoelectric actuators and non-resonance piezoelectric actuators. The resonance actuators are fast and compact [ 11 , 12 , 13 , 14 ]. However, the control strategy of resonance systems is complex since both the mechanical actuator and its power source exhibits high nonlinearity [ 10 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Long Stroke Design of Piezoelectric Walking Actuator for Wafer Probe Station

2022

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In order to develop a high-resolution piezoelectric walking actuator with a long stroke for the wafer probe station, this work presents a design of a piezoelectric walking actuator with two auxiliary clamping feet elastically attached to major clamping feet. Its construction was introduced and its operating principle was analyzed. Structure design details were discussed and a prototype was proposed. The prototype was fabricated and tested. The experimental results show that the proposed actuator can operate stably along a 20 mm guider. The proposed design is suitable for precision motion control applications.

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Performance Analysis of a Travelling-Wave Ultrasonic Motor under Impact Load

Cited by 12 publications

References 30 publications

Research on Fast and Precise Positioning Strategy of an Ultrasonic Motor Based on the Ultrasonic Friction Reduction Theory

Research on Fast and Precise Positioning Strategy of an Ultrasonic Motor Based on the Ultrasonic Friction Reduction Theory

A novel traveling wave rotary ultrasonic motor with piezoelectric backup function

Long Stroke Design of Piezoelectric Walking Actuator for Wafer Probe Station

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