Novel hybrid piezo-electromagnetic actuator for micro-indentation loading

An, Zengyong; Xu, Minglong; Feng, Bo; Zhang, Feng; He, Xiang

doi:10.1088/0964-1726/23/12/125025

Cited by 4 publications

(4 citation statements)

References 29 publications

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“…The nonlinear force versus position characteristic of BPMLA results in insufficient driving force when mover is away from the target end. In [7] and [8], the holding force reaches 100 N, while the start-up force is less than 30 N. More seriously, the driving force at starting of stroke is minus without spring mechanism. The BLFA's driving force is enhanced by linear force versus position characteristic, prototype's start-up force reaches 139 N specifically.…”

Section: Force Characteristic Analysismentioning

confidence: 96%

See 1 more Smart Citation

Design and analysis of a bi-stable linear force actuator for directly-driven metering pump

Tan¹,

Li²,

Ge³

et al. 2018

Smart Mater. Struct.

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As a kind of energy converter, high quality electromagnetic linear actuator is the focus of the research. A new flow regulation method for metering pump is proposed, a novel bi-stable linear force actuator (BLFA) is investigated corresponding to reduce power consumption and enhance drive capability. A coupling model including a loss model, an electromagnetic model and a mechanical model was constructed. The influence rule of the structural parameters on force characteristic was investigated. Through structural parameter design, force versus position characteristic is high-linearity in working area and the minimum threshold value of drive force (start-up force) reaches 139 N without spring mechanism, which effectively reduces the device’s volume. Besides, power consumption in holding phase is decreased because of holding force. Moreover, an innovative pulse current excitation mode was adopted to reduce power consumption further. Experimental and simulation results validate the static and dynamic performance of BLFA. The circulating power consumption of prototype is 3.1 J, which does not change with the working frequency and has decreased by 34% compared with the traditional excitation mode. Additionally, the advantage of BLFA’s performance was also verified with directly-driven metering pump flow characteristic experiment.

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Section: Force Characteristic Analysismentioning

confidence: 96%

“…Thus, it has gained more attention in recent years. There are three typical configurations for electromagnetic linear actuator, i.e., moving coil [8][9][10], moving magnet [11,12] and moving iron [13,14].…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of a bi-stable linear force actuator for directly-driven metering pump

Tan¹,

Li²,

Ge³

et al. 2018

Smart Mater. Struct.

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“…On the measurement of mechanical properties of soft materials, the deformation from load sensor δ(F) and slide of the sensor reduces the real equivalent indenting depth, and makes the measured relaxation curves differ from the predicted curves. To solve the slide problem of the whole load sensor structure, An et al proposed a clamping method that was used on the actuator [4]: when the position must be fixed, the drive voltage is turned off at the clamping piezoelectric structure and the entire structure is fixed by static friction force. This technology helps the actuator fixed without any slide during the experiment.…”

Section: Measurement Science and Technologymentioning

confidence: 99%

A piezoelectric-based infinite stiffness generation method for strain-type load sensors

Zhang¹,

Shao²,

Chen³

et al. 2015

Meas. Sci. Technol.

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Under certain application conditions like nanoindentation technology and the mechanical property measurement of soft materials, the elastic deformation of strain-type load sensors affects their displacement measurement accuracy. In this work, a piezoelectric-based infinite stiffness generation method for strain-type load sensors that compensates for this elastic deformation is presented. The piezoelectric material-based deformation compensation method is proposed. An Hottinger Baldwin Messtechnik GmbH (HBM) Z30A/50N load sensor acts as the foundation of the method presented in this work. The piezoelectric stack is selected based on its size, maximum deformation value, blocking force and stiffness. Then, a clamping and fixing structure is designed to integrate the HBM sensor with the piezoelectric stack. The clamping and fixing structure, piezoelectric stack and HBM load sensor comprise the sensing part of the enhanced load sensor. The load-deformation curve and the voltage-deformation curve of the enhanced load sensor are then investigated experimentally. Because a hysteresis effect exists in the piezoelectric structure, the relationship between the control signal and the deformation value of the piezoelectric material is nonlinear. The hysteresis characteristic in a quasi-static condition is studied and fitted using a quadratic polynomial, and its coefficients are analyzed to enable control signal prediction. Applied arithmetic based on current theory and the fitted data is developed to predict the control signal. Finally, the experimental effects of the proposed method are presented. It is shown that when a quasi-static load is exerted on this enhanced strain-type load sensor, the deformation is reduced and the equivalent stiffness appears to be almost infinite.

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“…Electromagnetic linear actuators (EMLAs) have been widely used in industries such as automation, transportation and healthcare appliances because of higher efficiency and better dynamic performance [1][2][3]. Due to the increasing range of application of ELMAs, there is an increasing demand on simultaneously solving coupled mechanical, electromagnetic and thermal phenomena [4].…”

Section: Introductionmentioning

confidence: 99%

Multiphysics methodology for thermal modelling and quantitative analysis of electromagnetic linear actuator

Tan

Liu

et al. 2019

Smart Mater. Struct.

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Multiphysics methodology is a preferred tool for the design and optimization of electromagnetic linear actuators (EMLA). In this paper, a multiphysics method was proposed, which uses the non-simplified energy consumption distribution as the heat source for temperature field calculation, adjusts the material properties by temperature, and considers the interaction between motion (including impact) and loss. Then comprehensive experiments and quantitative analysis were carried out. The results show that the errors between simulated and experimental results of indices such as landing velocity, input circulating energy, iron loss and temperature rise of prototype were less than 5%. The prototype's total iron loss was decreased by 57.6% with fixed armature and dynamic response time was decreased by 10.4% without eddy current compared with the normal condition. This result validated the precision and necessity of the coupling model. In addition to being applied to EMLA, the proposed methodology can be used for analysis and design of a wide range of electromagnetic actuators.

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Novel hybrid piezo-electromagnetic actuator for micro-indentation loading

Cited by 4 publications

References 29 publications

Design and analysis of a bi-stable linear force actuator for directly-driven metering pump

Design and analysis of a bi-stable linear force actuator for directly-driven metering pump

A piezoelectric-based infinite stiffness generation method for strain-type load sensors

Multiphysics methodology for thermal modelling and quantitative analysis of electromagnetic linear actuator

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