Modeling and analysis of a linear ultrasonic motor: consider the slider movement characteristic

Dai, Shichao; Yao, Zhiyuan; Zhou, Lifeng; He, Yu Ting

doi:10.1088/1361-665x/ab3a72

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…For this experiment, a V-shaped LUSM is used and the structure of it is shown in Figure 1 . The stator is composed of two Langevin vibrators, which are distributed in a V shape [ 21 ]. Two-phase specific drive signals are applied to the piezoelectric (PZT) ceramics to excite the symmetric mode and anti-symmetric mode of the stator, so that the vibration trajectory of the driving foot is an ellipse.…”

Section: Theoretical Analysismentioning

confidence: 99%

Speed Sensorless Control of Linear Ultrasonic Motors Based on Stator Vibration Amplitude Compensation

Yan

Yang

et al. 2020

Sensors

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In some applications of linear ultrasonic motors (LUSMs), not installing speed/position sensors can reduce the size and cost of the system, changes in load will cause fluctuations in the speed of the LUSM. To eliminate the influence of load changes on speed, a speed sensorless control scheme based on stator vibration amplitude compensation (SSCBVC) is proposed. This scheme is implemented under the framework of the stator vibration amplitude-based speed control (VBSC) and frequency tracking. Based on the stator vibration amplitude-speed and the output force-speed curves of the LUSM, the relationship between the load changes and stator vibration amplitude (SVA) to be compensated is established, realizing a speed sensorless control of the LUSM under variable load conditions. The experimental results show that the maximum fluctuation of the speed is about 2.2% when the output force changes from 0 to 6 N with SSCBVC. This scheme can effectively reduce the influence of load changes on the speed of the LUSM without using speed/position sensors.

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Section: Theoretical Analysismentioning

confidence: 99%

Speed Sensorless Control of Linear Ultrasonic Motors Based on Stator Vibration Amplitude Compensation

Yan

Yang

et al. 2020

Sensors

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“…They are widely utilized in robotics [6], aerospace [7] and biomedical fields [8]. According to the actuating principle, piezoelectric actuators can be divided into ultrasonic type [9,10], inertia type [11,12], inchworm type [13,14] and direct type [15,16]. However, the slippage phenomenon between the actuator and stator leads to the insufficient smoothness of the output displacement [17,18].…”

Section: Introductionmentioning

confidence: 99%

A low speed piezoelectric actuator with high displacement smoothness and its multi-objective optimized method

Cheng,

Chen,

et al. 2023

Smart Mater. Struct.

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Piezoelectric actuators are widely utilized in the precision industry field, but the existing piezoelectric actuators are difficult to achieve high displacement smoothness at low speed, which limits the practical application of the piezoelectric actuators. This work proposes a piezoelectric actuator that can achieve high displacement smoothness through a multi-leg coordinated actuation principle. A multi-objective optimized method based on adaptive mutation genetic algorithm is utilized to design the driving leg by comprehensively considering five design variables. The design goal of the maximum displacement of the driving foot and the minimum size of the driving leg are achieved. A prototype is fabricated and the characteristics are tested. The experimental results demonstrate the effectiveness of the optimized method. High displacement smoothness at low speed is also achieved. The output displacements of the proposed actuator at different driving voltages and frequencies show no regression and intermittent motion. The linearity R 2 could reach 0.9978, and the low output speed of the actuator could reach 22.69 µrad s−1 at voltage of 100 Vp–p and frequency of 1 Hz.

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“…These actuators utilized the first longitudinal mode and second flexural mode to form the desired elliptical motion at the driving foot with the same exciting frequency, the bidirectional motions were obtained by changing the phases of two relevant exciting signals. These two actuators are highly innovative and attract many researchers to conduct in-depth research [22][23][24][25][26]. Therefore, many similar structures and similar operation principles have been presented and investigated.…”

Section: Introductionmentioning

confidence: 99%

A novel compact bolted-type piezoelectric actuator excited by two excitation methods: design, simulation, and experimental investigation

Liu¹,

Fu²,

Wang³

et al. 2023

Smart Mater. Struct.

Self Cite

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A novel bolted-type piezoelectric actuator excited by two excitation methods was proposed and investigated in this paper using both simulations and experiments. Different from most existing piezoelectric actuators, the proposed actuator can be excited by two different excitation methods, namely single-phase excitation method and dual-phase excitation method. The structure of the actuator was depicted and its geometric dimensions were presented. Furthermore, the working principles of the proposed actuator under these methods were illustrated in detail, and the vibration characteristics of the driving foot were analyzed using the finite element method. In addition, a prototype was fabricated and an experimental system was set up to evaluate the output performance of the prototype. The experimental results indicated that the actuator achieved a maximum velocity of 483.7 mm s-1 and a maximum thrust of 3.4 kg with dual-phase excitation, and a maximum velocity of 284.6 mm s-1 and a maximum thrust of 2.2 kg with single-phase excitation.

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Modeling and analysis of a linear ultrasonic motor: consider the slider movement characteristic

Cited by 5 publications

References 19 publications

Speed Sensorless Control of Linear Ultrasonic Motors Based on Stator Vibration Amplitude Compensation

Speed Sensorless Control of Linear Ultrasonic Motors Based on Stator Vibration Amplitude Compensation

A low speed piezoelectric actuator with high displacement smoothness and its multi-objective optimized method

A novel compact bolted-type piezoelectric actuator excited by two excitation methods: design, simulation, and experimental investigation

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