Experimental investigation on mechanical characteristics of low-voltage driving traveling-wave ultrasonic motor with the flexible rotor

Duan, Xuefei; Zhang, Yanhu; Zhou, Ji; Jin, Xiandi; Chen, Zhihao; Zhou, Yuhua; Fu, Hao; Quan, Li

doi:10.1016/j.sna.2022.113744

Cited by 8 publications

(2 citation statements)

References 69 publications

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“…Obviously, the difference between the standing waves of phase A and B in spatial phase is also π/2. Finally, the traveling wave can be generated on the tooth-ring by the superposition of two-phase standing waves [43,44]. The proposed rotary ultrasonic motor combines the principle of 'Shaking Beam' with the formation mechanism of traveling wave, which can not only improve the electromechanical coupling efficiency but also increase the vibration amplitude of the teeth compared with the motors working in non-resonant mode.…”

Section: Driving Principlementioning

confidence: 99%

A novel rotary ultrasonic motor based on multiple Langevin transducers: design, simulation, and experimental investigation

Ma,

Yang,

Qiu

et al. 2024

Smart Mater. Struct.

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Travelling wave rotary ultrasonic motors (TRUSMs) have been applied in optical systems, robotics, biomedical and other fields. However, the disadvantages such as short working life, driving performance degradation, and low energy utilization significantly limit the long-term and stable operation of TRUSMs in advanced fields like aerospace mechanisms. To address the above issues, a novel rotary ultrasonic motor based on multiple Langevin transducers is proposed in this paper. First, the structural design, driving principle and general design criteria are described in detail. Then, the structural parameters are optimized by finite element simulation analysis. Second, a prototype is assembled controllably. Subsequently, the impedance test and vibration measurement are carried out. The results show that the traveling wave is successfully generated on the tooth-ring, and all the Langevin transducers are excited to the first-order longitudinal vibration modes, which strongly verify the correctness of design principle. Finally, the driving performance experiment is carried out. The experimental results show that the no-load speed is 62 r/min under the pre-pressure of 10 N. The stalling torque is 0.94 N·m at the driving voltage of 500 Vp-p. The response characteristics show that the start/stop time are 4.6/5.5 ms, and the angular displacement resolution of clockwise/counterclockwise driving are 6.7/10.2 μrad. The motor proposed in this paper not only exhibits relatively high output performance with excellent vibration characteristics, but also maintains compactness of the structure. The sandwiched structure design effectively avoids the problem that the bonded-type piezoceramic rings in conventional TRUSMs are prone to damage or fall-off when vibrating for a long time. Furthermore, the general design criteria provide a new approach to develop high performance rotary ultrasonic motors. The proposed novel ultrasonic motor is expected to meet the demand for long-term and stable operation in aerospace mechanisms.

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Section: Driving Principlementioning

confidence: 99%

A novel rotary ultrasonic motor based on multiple Langevin transducers: design, simulation, and experimental investigation

Ma,

Yang,

Qiu

et al. 2024

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…However, the limited displacement range of piezoelectric stack-driven systems often requires multistage displacement amplification mechanisms, resulting in complex structures and high manufacturing costs for micromanipulation systems. Ultrasonic motors are considered as valuable alternatives to piezoelectric stacks for driving micromanipulation systems due to their large stroke range, simple structure, high positioning accuracy, strong self-locking capability, resistance to electromagnetic interference, requirement of less electrical input voltage at resonance and noiseless drive [9][10][11][12][13]. Miao et al proposed a 3-PRR flexure planar parallel manipulator driven by linear ultrasonic motors (LUMs) [14].…”

Section: Introductionmentioning

confidence: 99%

Dynamic modeling and optimization of mechanical drift for compliant parallel micromanipulation driven by V-shape linear ultrasonic motors

Li,

Yao,

et al. 2024

Smart Mater. Struct.

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Designing micro-mechanisms that satisfy large strokes, high precision, and multiple degrees of freedom has consistently been a research focus and challenge in the field of micromanipulation systems. Linear ultrasonic motors (LUMs), with advantages such as millimeter-level travel, nanometer level motion resolution, and power- -off self-locking, significantly contribute to the advancement in the mechanism design of micromanipulation systems. However, the challenge of mechanical drift lacks a comprehensive theoretical analysis to explain its cause and limits its application. This paper presents a mechanical drift modeling method for a compliant parallel micromanipulation (CPM) driven by a linear ultrasonic motor (LUM). The model primarily focuses on the creep characteristics of the flexure clamp element in the LUM. Based on the stiffness matrix analysis method of the compliant parallel mechanism kinematics, the mechanical drift dynamics model of the CPM is established. The influence of the main structural parameters on the CPM mechanical drift is investigated. The research indicates that the creep of flexure clamps in the CPM is the main factor leading to the mechanical drift. Optimization of mechanical drift is achieved by choosing flexure clamps with higher tangential stiffness for LUM and flexure hinge joints with greater flexibility for CPM. Finally, experimental studies reveal that under equivalent conditions, the mechanical drift of the optimized CPM was significantly reduced than before, proving the rationality of the theoretical model and optimization method.

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Research on Output Torque Optimization of Ultrasonic Motor Based on Genetic Algorithm

Li¹,

Tang²,

Yang³

et al. 2023

Lecture Notes in Electrical Engineering

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Experimental investigation on mechanical characteristics of low-voltage driving traveling-wave ultrasonic motor with the flexible rotor

Cited by 8 publications

References 69 publications

A novel rotary ultrasonic motor based on multiple Langevin transducers: design, simulation, and experimental investigation

A novel rotary ultrasonic motor based on multiple Langevin transducers: design, simulation, and experimental investigation

Dynamic modeling and optimization of mechanical drift for compliant parallel micromanipulation driven by V-shape linear ultrasonic motors

Research on Output Torque Optimization of Ultrasonic Motor Based on Genetic Algorithm

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