Analytical modeling and experimental validation of a V-shape piezoelectric ultrasonic transducer

Li, Xiaoniu; Yao, Zhiyuan

doi:10.1088/0964-1726/25/7/075026

Cited by 41 publications

(17 citation statements)

References 31 publications

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“…The V-shape ultrasonic motor [24] is selected to drive the mechanical switch. The V-shape ultrasonic motor is comprised of a V-shape stator, a mover, a clamp, and a base as shown in Fig.…”

Section: Structure Of V-shape Ultrasonic Motormentioning

confidence: 99%

Dispersed operating time control of a mechanical switch actuated by an ultrasonic motor

Li¹,

Yao²,

Zhou³

et al. 2018

J. vibroeng.

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The ultrasonic motor is an uncertain time-varying nonlinear system because of the nonlinearity of the piezoelectric material, the friction and the temperature. For example, the operating time of the mechanical switch actuated by the ultrasonic motor in regular stroke is highly dispersed. Unfortunately, it is difficult to establish accurate mathematical model. In this paper, an analytical autoregressive process model (AR) is employed to identify and control the ultrasonic motor. First of all, dispersed operating time of the mechanical switch actuated by the ultrasonic motor is investigated. Then, the AR model is established to predict the operating time of the ultrasonic motor on the basis of the statistical data to reduce the nonlinear behavior of the ultrasonic motor, and to improve the accuracy and obtain a good time response of the switch. The simulation results are agreed with experimental results, confirming the effectiveness of proposed model. Furthermore, we adopt the predicted result of the AR model to control the mechanical switch actuated by the ultrasonic motor. The analytical investigation is fulfilled with two target operating time ranges, namely 12 ms and 24 ms. Comparison of the results obtained from the AR model and the experimentation reveal that the standard deviations are less than 95.3 μs and 102.7 μs with maximum errors equal to 0.41 % and 0.44 % respectively. Thereby, the proposed dispersed operating time control is performed. Findings indicate that the maximum errors for the operating time of the mechanical switch are less than 140 μs and 110 μs with ±0.85 % and ±0.42 % respectively.

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“…The V-shape ultrasonic motor [24] is selected to drive the mechanical switch. The V-shape ultrasonic motor is comprised of a V-shape stator, a mover, a clamp, and a base as shown in Fig.…”

Section: Structure Of V-shape Ultrasonic Motormentioning

confidence: 99%

Dispersed operating time control of a mechanical switch actuated by an ultrasonic motor

Li¹,

Yao²,

Zhou³

et al. 2018

J. vibroeng.

Self Cite

View full text Add to dashboard Cite

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“…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 ]. Consequently, a motion system actuated by resonance actuators always needs closed-loop control [ 16 , 17 , 18 , 19 , 20 ].…”

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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“…In order to ulteriorly reduce incision, improve surgical FoV, driving accuracy and operating flexibility, and break through the design limitations caused by electromagnetic interference, the piezoelectric actuator technology, and magnetic anchor and guidance system are combined to design LSR which is driven by ultrasonic motor (USM). The piezoelectric actuator exhibits superior accuracy (Li and Yao, 2016; Li and Zhou, 2016), faster response speed, more compact structure (Wang et al, 2018a) over the other types of actuators, making it highly favorable for modern robots requiring high performance and miniaturization. Therefore, using USM to directly drive endoscope can improve the accuracy and stability of motion, and can make the overall structure be more compact by eliminating redundant intermediate transmission mechanism.…”

Section: Introductionmentioning

confidence: 99%

A novel laparoscopic surgical robot (LSR) based on double-leg ultrasonic motor (DUM)

Sun

et al. 2022

Journal of Intelligent Material Systems and Structures

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Magnetic anchor and guidance system has been widely used in laparoendoscopic single-site surgery with the benefit of small wound, wide field of vision (FoV), and convenience for repeated positioning. This paper introduces a novel three DoF laparoscopic surgical robot (LSR) based on double-leg ultrasonic motor (DUM) which features small dimension, fast response, and high positional precision. Piezoelectric ceramic (PZT) plates can excite longitudinal and bending coupled vibration of DUM and the two phase in-plane three order bending vibration can form traveling wave to drive DUM rotor. DUM stator is optimized by non-dominated sorting genetic algorithm-II for good consistency of two working mode frequencies and negligible influence of adjacent interference modes on working modes, which improves motion stability and driving efficiency. The mechanical characteristic of DUM under different chamfer parameters has been studied through comparative experiments and the design of robot prototype is completed further. For clockwise and counterclockwise rotation, the maximum no-load rotary speeds are 333.75 and 335.77 rpm, and the maximum output torques are 2 and 1.6 N mm. The experimental platform for FoV measurement is built to verify that LSR can adjust the posture to obtain suitable surgical FoV, indicating that the application of DUM in LSR has significant advantages and great potential.

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Analytical modeling and experimental validation of a V-shape piezoelectric ultrasonic transducer

Cited by 41 publications

References 31 publications

Dispersed operating time control of a mechanical switch actuated by an ultrasonic motor

Dispersed operating time control of a mechanical switch actuated by an ultrasonic motor

Long Stroke Design of Piezoelectric Walking Actuator for Wafer Probe Station

A novel laparoscopic surgical robot (LSR) based on double-leg ultrasonic motor (DUM)

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