Planar Magnetostrictive Micromechanical Actuator

Steiner, Harald; Stifter, Matthias; Hortschitz, Wilfried; Keplinger, Franz

doi:10.1109/tmag.2014.2356614

Cited by 13 publications

(8 citation statements)

References 16 publications

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“…This novel approach is proposed for passive temperature sensing. A magnetostriction-based chevron V-beam actuator has also been proposed by the same group in [33], demonstrating displacement output of 10 µm, by the application of a 14 mT magnetic field. The overall size of this device is 4 × 2 × 0.4 mm.…”

Section: Indirect Leverage a Buckling And V-shaped Beamsmentioning

confidence: 99%

Micro Motion Amplification–A Review

et al. 2020

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Many motion-active materials have recently emerged, with new methods of integration into actuator components and systems-on-chip. Along with established microprocessors, interconnectivity capabilities and emerging powering methods, they offer a unique opportunity for the development of interactive millimeter and micrometer scale systems with combined sensing and actuating capabilities. The amplification of nanoscale material motion to a functional range is a key requirement for motion interaction and practical applications, including medical micro-robotics, micro-vehicles and micro-motion energy harvesting. Motion amplification concepts include various types of leverage, flextensional mechanisms, unimorphs, micro-walking / micro-motor systems, and structural resonance. A review of the research stateof-art and product availability shows that the available mechanisms offer a motion gain in the range of 10. The limiting factor is the aspect ratio of the moving structure that is achievable in the microscale. Flexures offer high gains because they allow the application of input displacement in the close vicinity of an effective pivotal point. They also involve simple and monolithic fabrication methods allowing combination of multiple amplification stages. Currently, commercially available motion amplifiers can provide strokes as high as 2% of their size. The combination of high-force piezoelectric stacks or unimorph beams with compliant structure optimization methods is expected to make available a new class of high-performance motion translators for microsystems.

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Section: Indirect Leverage a Buckling And V-shaped Beamsmentioning

confidence: 99%

Micro Motion Amplification–A Review

et al. 2020

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“…This kind of actuator has the following advantages: wide temperature range, low voltage operability, no cable drive, large output force, relatively smooth frequency response, fast response speed, and high control precision [ 37 , 38 ]. According to its output form, it can be classified as a microdisplacement actuator and a force actuator, such as a GMS microdisplacement actuator and a micromagnetostrictive vibrator, among others [ 39 , 40 ]. It is possible to use GMS material as an actuator for guided wave generation [ 41 , 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

Development of a Novel Guided Wave Generation System Using a Giant Magnetostrictive Actuator for Nondestructive Evaluation

Luo

Wang

et al. 2018

Sensors

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As a common approach to nondestructive testing and evaluation, guided wave-based methods have attracted much attention because of their wide detection range and high detection efficiency. It is highly desirable to develop a portable guided wave testing system with high actuating energy and variable frequency. In this paper, a novel giant magnetostrictive actuator with high actuation power is designed and implemented, based on the giant magnetostrictive (GMS) effect. The novel GMS actuator design involves a conical energy-focusing head that can focus the amplified mechanical energy generated by the GMS actuator. This design enables the generation of stress waves with high energy, and the focusing of the generated stress waves on the test object. The guided wave generation system enables two kinds of output modes: the coded pulse signal and the sweep signal. The functionality and the advantages of the developed system are validated through laboratory testing in the quality assessment of rock bolt-reinforced structures. In addition, the developed GMS actuator and the supporting system are successfully implemented and applied in field tests. The device can also be used in other nondestructive testing and evaluation applications that require high-power stress wave generation.

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“…They also have a potential for lower cost due to reduced assembly, fewer components to stock, and the possibility of simplified manufacturing [11]. Therefore, they are suitable to make mechanical amplifiers for strain actuators, and various topologies have been developed including V-shaped amplifier [12], honeycomb link amplifier [13] and buckling mechanism amplifier [14]. The amplification gains range from several times to several dozens.…”

Section: Introductionmentioning

confidence: 99%

Modeling and optimization of magnetostrictive actuator amplified by compliant mechanism

Niu¹,

Yang²,

Yang³

et al. 2017

Smart Mater. Struct.

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Magnetostrictive actuators are commonly used in precision engineering with the advantages of high resolution and fast response. Their limited strokes are always amplified by compliant mechanisms without wear and backlash. This paper proposes a hybrid model for the actuation system considering the coupling of the actuator and the amplifier. The magnetostrictive model, based on the Jiles–Atherton model, is related to the input stiffness of the amplifier when quantifying the magneto-mechanical effects, including stress-dependent magnetization, stress-dependent magnetostriction and ΔE effect. The compliant mechanism model aims at constructing the flexibility matrix with the amplification ratio and input stiffness related to the spring factor of the load. The deformation and structural stress of the amplifier are also dependent on the output strain of magnetostrictive material. Experiments under both free load and spring load conditions have been done to verify the effectiveness of the hybrid model. The proposed model is suitable for parameter optimization and the performance indicators can be precisely quantified. Optimization based on hybrid model is more preferred than optimizing the actuator and amplifier independently for maximum output displacement. Furthermore, ‘stiffness match principle’ is no longer applicable when considering ΔE effect, and the optimal external stiffness problem can be numerically solved by the hybrid model for maximum output energy of magnetostrictive material.

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Planar Magnetostrictive Micromechanical Actuator

Cited by 13 publications

References 16 publications

Micro Motion Amplification–A Review

Micro Motion Amplification–A Review

Development of a Novel Guided Wave Generation System Using a Giant Magnetostrictive Actuator for Nondestructive Evaluation

Modeling and optimization of magnetostrictive actuator amplified by compliant mechanism

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