An approach for simulating magnetic microactuators

Dinulovic, Dragan; Gatzen, H.H.

doi:10.1109/esime.2008.4525037

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…By applying the electromagnetic principle, different microactuators like a bi-stable optical microswitch [5] or an integrated second stage microactuator for a hard disk recording head [6] were designed and fabricated at the Institute for Microtechnology (imt). A proven approach for the design of such microsystems is to create a Finite Element Method (FEM) model for these systems and simulate their behavior when excited [7]. Applying this approach, the electromagnetic device used in the hearing implant was designed by 2-D and 3-D electromagnetic simulations.…”

Section: Introductionmentioning

confidence: 99%

Simulations of an Electromagnetic Microsystem Used in Biomedical Applications

Creutzburg¹,

Gatzen²

2010

PIERS Online

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Simulations of an electromagnetic microsystem intended to be used in a microactuator which serves as an ear implant to overcome amblyacousia were conducted. Using the ANSYS TM simulation software, the design and optimization of the electromagnetic microsystem were accomplished by Finite Element Method (FEM) analyses. The design process contained 2-D and 3-D simulations. 2-D simulations served as parametric studies of the system. Afterwards, a 3-D simulation was carried out to fine-tune the results of the 2-D simulation. Comparing the 3-D with the 2-D simulation, the resulting force-air gap data were very close. With respect to the simulations, the designed electromagnetic system fulfils the requirements to drive the microactuator.

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Section: Introductionmentioning

confidence: 99%

Simulations of an Electromagnetic Microsystem Used in Biomedical Applications

Creutzburg¹,

Gatzen²

2010

PIERS Online

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“…Microactuation based on the electromagnetic principle provides rather high forces, high frequencies, and features a low driving voltage [11]. Optimizing the fraction of the cross section exposed to the external magnetic field in a magnetic microactuator is a key requirement for a highly efficient microactuator.…”

Section: Modeling Of Magnetic Microsystemsmentioning

confidence: 99%

Simulation of an Improved Microactuator with Discrete MSM Elements

Spasova

Gatzen

2009

MSF

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Abstract. Magnetic Shape Memory (MSM) alloys are a new class of "smart" materials. In the martensite state, they exhibit a reversible strain due to a reorientation of twin variants, based on twin boundary motion driven by an external magnetic field occurring in the martensite state. This effect allows for the development of linear microactuators. This work presents the simulation results for the fabrication of a microactuator based on an MSM alloy with an optimized design. A stator element consists of a NiFe45/55 flux guide, two poles, and double-layer Cu coils wound around each pole for generating the magnetic field. The MSM material applied is NiMnGa. The integrated microactuator is subjected to dynamic simulation, using a "checkerboard" pattern to locally switch the magnetic properties when the relative permeability µ r is changed. The model is described with the Ansys Parametric Design Language (APDL). Design, modeling, and simulation of the magnetic system including MSM material, are conducted by Finite Element Method (FEM) analysis using the software tool ANSYS™.

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