An I-shape linear piezoelectric actuator using resonant type longitudinal vibration transducers

Liu, Yingxiang; Yan, Jipeng; Xu, Dongmei; Chen, Weishan; Yang, Xiaohui; Tian, Xinqi

doi:10.1016/j.mechatronics.2016.09.002

Cited by 45 publications

(21 citation statements)

References 28 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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“…Substituting Equations (1), (5), and (14) into Equation (15), Equation (15) can be converted into Equation (16):…”

Section: Numerical Calculation Of Cut-in Wind Speedmentioning

confidence: 99%

“…These features increase the maintenance cost of shared vehicles. If the renewable energy that exists in the ambition environment can be directly converted into electricity to power microsensors, this problem can be solved very well [5,6]. The process of driving a car produces a lot of energy that can be recycled, such as heat energy [7,8], vibration energy [9][10][11] and wind energy [12].…”

Section: Introductionmentioning

confidence: 99%

Study on the Critical Wind Speed of a Resonant Cavity Piezoelectric Energy Harvester Driven by Driving Wind Pressure

Xia

Liu

et al. 2019

Micromachines

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In order to solve the problem of continuous and stable power supply for vehicle sensors, a resonant cavity piezoelectric energy harvester driven by driving wind pressure was designed. The harvester has an effective working range of wind speed. According to the energy conservation law, the cut-in (initial) wind speed of the harvester was solved. The pressure distribution law of the elastic beam in the flow field was studied by the Fluent software package, and the results were loaded into a finite element model with a method of partition loading. The relationship between the wind speed and the maximum principal stress of the piezoelectric cantilever beam was analyzed, and the critical stress method was used to study the cut-out wind speed of the energy harvester. The results show that the cut-in wind speed of the piezoelectric energy harvester is 5.29 m/s, and the cut-out wind speed is 24 m/s. Finally, an experiment on the power generation performance of the energy harvester was carried out. The experimental results show that the cut-in and cut-out wind speeds of the piezoelectric energy harvester are 5 m/s and 24 m/s, respectively, and the best matching load is 60 kΩ. The average output power, generated by the harvester when the driving wind speed is 22 m/s, is 0.145 mW, and the corresponding power density is 1.2 mW/cm 3 .

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“…In the past few decades, two kinds of models have been proposed to help understand and design piezoelectric stack devices. The models of the first kind are finite element models (FEMs) [21][22][23][24][25][26]. These models usually employ a commercial software package, such as ANSYS, to assist the performance analysis.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analytical Solution of a Piezoelectric Stack Utilized in an Actuator and a Generator

Liu

Wang

2018

Applied Sciences

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This paper presents the dynamic analytical solution of a piezoelectric stack utilized in an actuator and a generator based on the linear piezo-elasticity theory. The solutions for two different kinds of piezoelectric stacks under external load were obtained using the displacement method. The effects of load frequency and load amplitude on the dynamic characteristics of the stacks were discussed. The analytical solutions were validated using the available experimental results in special cases. The proposed model is able not only to predict the output properties of the devices, but also to reflect the inner electrical and mechanical components, which is helpful for designing piezoelectric actuators and generators in a comprehensive manner.

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An I-shape linear piezoelectric actuator using resonant type longitudinal vibration transducers

Cited by 45 publications

References 28 publications

A Quadruped Micro-Robot Based on Piezoelectric Driving

A Quadruped Micro-Robot Based on Piezoelectric Driving

Study on the Critical Wind Speed of a Resonant Cavity Piezoelectric Energy Harvester Driven by Driving Wind Pressure

Dynamic Analytical Solution of a Piezoelectric Stack Utilized in an Actuator and a Generator

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