A flexible shaft based travelling wave ultrasonic motor with high-precision positioning characteristics

Zhou, Ningning; Li, Jinbang; Chen, Pengfei; Qing, Tao; Cui, Yuguo

doi:10.1016/j.precisioneng.2021.03.011

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…And this type of motor has been applied in precision equipment [4,5], biomedical [6], robotics [7] and other technical fields. Among the research of rotary ultrasonic motors, the most concerned performance indicators include output torque [8,9], rotational speed [10,11], angular displacement resolution [12], and response characteristics in complex environment [13,14]. In recent years, with the development of space technology, the application demand of rotary ultrasonic motors in aerospace mechanisms has increased significantly, and the comprehensive performance of rotary ultrasonic motors has been challenged.…”

Section: Introductionmentioning

confidence: 99%

“…Wu et al [26] utilized alumina alloy as the material for the stator, which improved the electromechanical coupling coefficient and reduced the damping compared to the conventional TRUSM. Zhou et al [12] focused on optimizing the structure of the shaft, and the test results showed that the speed stability of the motor was improved in continuous and stepping driving modes. Dong and Yang [27] excited two traveling waves on the stator and rotor respectively, which improved the driving ability and operating efficiency of the motor.…”

Section: Introductionmentioning

confidence: 99%

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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: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

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

“…Ultrasonic motors (USMs) utilise the inverse piezoelectric effect of piezoelectric materials to excite the micro-amplitude vibration of metallic elastomers in the ultrasonic frequency band and achieve the transformation of electrical energy to mechanical energy through the frictional interaction between stator and mover [1][2][3][4]. Owing to their advantages of high response speed, compact structure, immunity to electromagnetic interference, and precise positioning [5][6][7][8][9], the USMs are widely used in microrobots, aerospace devices, high accuracy positioning, biomedical technology, and semiconductor processing [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Development of a novel single-mode miniature standing wave ultrasonic motor

Pan,

Wang,

Wan

et al. 2023

Smart Mater. Struct.

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A novel single-mode miniature standing wave ultrasonic motor (SUSM) is proposed. The SUSM uses the first extension vibration mode and second extension vibration mode of the stator to generate different diagonal vibration trajectories and drive the rotor to rotate in different directions through a single-phase signal. The bidirectional motion of the SUSM can be realised by switching the two vibration modes and excitation methods. The motor is designed and the operating principle is analysed. The resonant frequencies of the two vibration modes are determined by the finite element simulated analysis, and the transient analysis is adopted to obtain the diagonal trajectories of the driving part. Finally, a prototype of the single-mode SUSM is developed and the mechanical performance of the prototype is measured and evaluated. According to the experimental results, the motor has a no-load speed of 265.37 rpm (B1 mode) and 320.20 rpm (B2 mode) in each direction under 200 Vp-p and 100 Vp-p voltage excitation, and the maximum load is 60 mN and 70 mN, respectively.

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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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A flexible shaft based travelling wave ultrasonic motor with high-precision positioning characteristics

Cited by 8 publications

References 23 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

Development of a novel single-mode miniature standing wave ultrasonic motor

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

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