A T-shape linear piezoelectric motor with single foot

Liu, Yingxiang; Chen, Weishan; Yang, Xiaohui; Liu, Junkao

doi:10.1016/j.ultras.2014.10.010

Cited by 47 publications

(16 citation statements)

References 27 publications

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“…The driving principles mentioned above have their own merits and drawbacks, and it can be concluded that an excellent micro-robot needs to have the following characteristics: high speed; simple structure, big load capacity and easily controlled [ 10 , 11 , 12 ]. Piezoelectric driving has the superiority of no electromagnetic radiation, fast response, and simple structure [ 13 , 14 , 15 , 16 , 17 , 18 ]. Therefore, more and more scholars pay attention to micro-robots that are based on piezoelectric driving.…”

Section: Introductionmentioning

confidence: 99%

A Quadruped Micro-Robot Based on Piezoelectric Driving

Quan

Deng

et al. 2018

Sensors

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Inspired by a way of rowing, a new piezoelectric driving quadruped micro-robot operating in bending-bending hybrid vibration modes was proposed and tested in this work. The robot consisted of a steel base, four steel connecting pins and four similar driving legs, and all legs were bonded by four piezoelectric ceramic plates. The driving principle is discussed, which is based on the hybrid of first order vertical bending and first order horizontal bending vibrations. The bending-bending hybrid vibration modes motivated the driving foot to form an elliptical trajectory in space. The vibrations of four legs were used to provide the driving forces for robot motion. The proposed robot was fabricated and tested according to driving principle. The vibration characteristics and elliptical movements of the driving feet were simulated by FEM method. Experimental tests of vibration characteristics and mechanical output abilities were carried out. The tested resonance frequencies and vibration amplitudes agreed well with the FEM calculated results. The size of robot is 36 mm × 98 mm × 14 mm, its weight is only 49.8 g, but its maximum load capacity achieves 200 g. Furthermore, the robot can achieve a maximum speed of 33.45 mm/s.

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Section: Introductionmentioning

confidence: 99%

A Quadruped Micro-Robot Based on Piezoelectric Driving

Quan

Deng

et al. 2018

Sensors

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“…A piezoelectric actuator is a type of actuator that uses the inverse piezoelectric effect to convert electrical energy into mechanical motion [ 1 , 2 , 3 ]. In addition, piezoelectric actuators are widely used in various ultra-precision machining technologies due to their remarkable advantages, such as a fast dynamic response, high resolution and large output force [ 4 , 5 , 6 ]. In particular, the high dynamic characteristics of a piezoelectric actuator make it suitable for ultrasonic machining [ 7 ], fast tool servo technology (FTS) [ 8 ], ultra-precision cutting technology [ 9 ] and even machining vibration detection [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Rapid Response Characteristics of Piezoelectric Actuators for Ultra-Precision Machining

et al. 2023

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Piezoelectric actuators are characterized by high positioning accuracy, high stiffness and a fast response and are widely used in ultra-precision machining technologies such as fast tool servo technology and ultrasonic machining. The rapid response characteristics of piezoelectric actuators often determine the overall quality of machining. However, there has been little research on the fast response characteristics of piezoelectric actuators, and this knowledge gap will lead to low precision and poor quality of the final machining. The fast response characteristics of a piezoelectric actuator were studied in this work. Firstly, the piezoelectric actuator was divided into a no-load state and a load state according to the working state. A fast response analysis and output characteristic analysis were carried out, the corresponding dynamic model was established, and then the model was simulated. Finally, an experimental system was established to verify the dynamic model of the piezoelectric actuator’s fast response by conducting an experiment in which the piezoelectric actuator bounces a steel ball. The experimental results verify the correctness of the model and show that the greater the cross-sectional area and height of the piezoelectric actuator, the higher the bouncing height of the ball, and the better the dynamic performance of the piezoelectric actuator. It is believed that this study has guiding significance for the application of the dynamic characteristics of piezoelectric actuators in the machining field.

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“…Ultrasonic motors, driven by ultrasonic vibration instead of electromagnetic force, have superior characteristics such as simple structure without coils, lowspeed without reducer, self-locking in the power-off state, and absence of electromagnetic radiation. [1][2][3] These more competitive merits make them good candidates for robots, 4 high-precision machines, 5 surgery devices, 6 and optical instruments. 7 Ultrasonic motor can be classified into two major groups: standing wave and traveling wave type, based on the vibration type of stator.…”

Section: Introductionmentioning

confidence: 99%

A novel fixable cylindrical ultrasonic motor

Sun

Tang

Wang

et al. 2019

Advances in Mechanical Engineering

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A novel cylindrical ultrasonic motor easy to be fixed is proposed in this article. There are threaded holes on the bottom of stator used for fixing, distinguishing it from other cylindrical stators. The bottom is machined as a round lug boss. Its radius is smaller than the inner radius of the stator in order not to affect the excitation of vibration mode. The finite element analysis was accomplished to verify the working principle. Based on the analysis, a prototype was fabricated and measured. The mechanical output characteristics were obtained by experiments. The maximal velocity of the proposed motor is 170 r/min at the operating frequency of 31.6 kHz.

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A T-shape linear piezoelectric motor with single foot

Cited by 47 publications

References 27 publications

A Quadruped Micro-Robot Based on Piezoelectric Driving

A Quadruped Micro-Robot Based on Piezoelectric Driving

Modeling of Rapid Response Characteristics of Piezoelectric Actuators for Ultra-Precision Machining

A novel fixable cylindrical ultrasonic motor

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