Improvement on the Structure Design of a Kind of Linear Piezoelectric Motor with Flexible Drive-Foot

Chen, Xifu; Li, Ming; Zhang, Huixia; Lu, Qian; Lyu, Sung-Ki

doi:10.1007/s12541-019-00209-7

Cited by 7 publications

(5 citation statements)

References 20 publications

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“…Some inertial impact piezoelectric motors are studied and compared. Compared with the non-resonant inertial impact piezoelectric motor (motor of Chen et al [19]), the motor prototype in this study has the advantages of relatively simple structure, high output speed and large load capacity. Compared with resonant inertial impact piezoelectric motors (motor of Pan et al [20] and motor of Zhang et al [21]), motor of Pan et al [20] has large driving frequency, fast output speed and small output load.…”

Section: Discussionmentioning

confidence: 99%

Resonant-type inertial impact linear piezoelectric motor based on coupling of driving and clamping parts

He¹,

Li²,

Yan³

et al. 2022

Smart Mater. Struct.

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A resonant-type inertial impact linear piezoelectric motor based on coupling of driving and clamping parts was designed and manufactured. The motor mainly includes stator (coupling of driving and clamping parts), mover (slider) and auxiliary parts. The driving part works in the resonant state under the excitation of single harmonic, which mainly realizes the function of reciprocating driving. Similarly, under the single harmonic driving, the clamping part also works in the resonant state to realize the clamping function. Through the coupling between the two parts of the stator, the mover is driven to move continuously in one direction. The inertial impact piezoelectric motor works in the resonant state because of the driving and clamping parts work in the resonant state respectively. Compared with the traditional quasi-static inertial impact motor, this study changes the working state of the inertial impact motor, which is novel. Through the finite element simulation software COMSOL 5.2, the resonant frequency coupling of the driving and the clamping part is consistent. An experimental platform was built to test the motor prototype to verify the feasibility of the principle. The experiment shows that: The maximum speed reaches 78 mm/s when the motor prototype is operated at the frequency of 810 Hz with a preload of 2 N and the working voltage of clamping and driving parts of motor were set at 80 and 220 Vp-p respectively. Meanwhile, the maximum load of the motor prototype can reach 5 N. The minimum resolution of the motor prototype is 4.733 μm.

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Section: Discussionmentioning

confidence: 99%

Resonant-type inertial impact linear piezoelectric motor based on coupling of driving and clamping parts

He¹,

Li²,

Yan³

et al. 2022

Smart Mater. Struct.

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“…Inchworm motors can be realized with one or multiple piezoelectric (PZT) stacks. The positioning of an object is performed either by the direct contact of PZT elements that are functioning in shear mode [1,2], or by indirect contact through flexural mechanisms, where the PZT elements are functioning in normal mode [3,4]. The main advantage of using a flexural mechanism is to enhance the reliability of the PZT element against damage.…”

Section: Introductionmentioning

confidence: 99%

Initially Clamped Piezoelectric Inchworm Linear Motor Design Based on Force Amplification Mechanisms for Miniaturized and Large Force Actuation Applications

Kloub

2020

The 1st International Electronic Conference on Actuator Technology: Materials, Devices and Applications

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In this paper, a novel monolithic structural design of a piezoelectric (PZT) inchworm motor utilizing three force amplification mode (FAM) mechanisms is presented as an approach to overcome the design challenges of common PZT inchworm motors. A mechanical system model based on Simulink software was developed for a proposed inchworm motor design. The dynamic response of the motor was simulated at the moment of releasing the pre-stressed mechanism. The results showed a backlash response due to the mass acceleration of the mechanisms.

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“…[13] In addition, because physical energy such as body loads are focused on the sole of the foot, using a piezoelectric generating material as the material for wearable devices is advantageous for signal sensing and energy harvesting. [14][15][16] In general, commercial piezoelectric generators (PEGs) are manufactured based on inorganic piezoelectric materials (e.g., Pb(ZrTi)O 3 , Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 , [17][18][19] PbTiO 3 ). [14][15][16] However, conventional inorganic piezoelectric materials are not suitable for wearable devices due to their heavy weights, large volumes, low durability, and high toxicity of the materials.Compared to inorganic materials, piezoelectric polymers such as Polyvinylidene fluoride (PVDF) have relatively high flexibility and are light, highly durable and eco-friendly, making them an ideal candidate for wearable devices.…”

mentioning

confidence: 99%

“…[14][15][16] In general, commercial piezoelectric generators (PEGs) are manufactured based on inorganic piezoelectric materials (e.g., Pb(ZrTi)O 3 , Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 , [17][18][19] PbTiO 3 ). [14][15][16] However, conventional inorganic piezoelectric materials are not suitable for wearable devices due to their heavy weights, large volumes, low durability, and high toxicity of the materials.Compared to inorganic materials, piezoelectric polymers such as Polyvinylidene fluoride (PVDF) have relatively high flexibility and are light, highly durable and eco-friendly, making them an ideal candidate for wearable devices. [20][21][22] E-textiles based on piezoelectric polymers are mainly used in wearable equipment due to their strong durability, flexibility, and high piezoelectric performance capabilities.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

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Wearable Piezoelectric Yarns with Inner Electrodes for Energy Harvesting and Signal Sensing

Ryu

Cho

Jeong

et al. 2021

Adv Materials Technologies

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Wearable device‐based gait data analysis is being used in medical research to prevent and treat serious diseases such as dementia beyond modern health management strategies. For gait‐related data collection and analysis, it is advantageous to place the sensor on the sole of the foot as a foot‐pressure, it is advantageous to use a piezoelectric generator‐based electronic textile (E‐textile) that can supply its own power by converting mechanical energy from the foot into electrical energy. In order to apply E‐textile materials to the sole of the foot, excellent durability, flexibility, and high signal accuracy through noise minimization are required. In this study, a piezoelectric polymer was used to coat the surface of a conductive fiber using the reverse dip coating technique. This method is easily scalable, feasible for large‐scale processing with a continuous process. The electrodes of this process are placed inside a piezoelectric fiber to minimize noise from the electrodes. The inner‐electrode piezoelectric yarn (IEPY) used during the process has excellent tensile strength (maximum stress and strain value: 54.2 MPa, 54%) and strong durability, maintaining its performance over 105 cycles under pushing force of 60 kg and generating excellent piezoelectric output (292 mVmax, 16.2 µW). The IEPY can drive the sensor for gait data, with the sensors being capable of continuous and large‐scale operation and feasible for the manufacturing of custom sensors.

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Improvement on the Structure Design of a Kind of Linear Piezoelectric Motor with Flexible Drive-Foot

Cited by 7 publications

References 20 publications

Resonant-type inertial impact linear piezoelectric motor based on coupling of driving and clamping parts

Resonant-type inertial impact linear piezoelectric motor based on coupling of driving and clamping parts

Initially Clamped Piezoelectric Inchworm Linear Motor Design Based on Force Amplification Mechanisms for Miniaturized and Large Force Actuation Applications

Wearable Piezoelectric Yarns with Inner Electrodes for Energy Harvesting and Signal Sensing

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