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Tilt Sensitivity Modeling of a Monolithic Weighing Cell Structure

  • Maximilian DarniederEmail author
  • Thomas Fröhlich
  • René Theska
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 71)

Abstract

Weighing cells used in mass comparators are among the most sensitive force measurement devices existing, while being subject to high loads of e.g. 1 kg. The mechanical system needs to be extremely sensitive in measurement direction while being insensitive in all other directions. A disturbing factor is the tilt of the compliant mechanism relative to the gravity vector. In a small scale this tilt is time dependent and requires either an additional compensation mechanism or an insensitive configuration of the weighing cell itself. The present study focuses on the latter. A planar structure of a weighing cell is modeled by the use of a three dimensional finite element model. The gravity vector is represented in spherical coordinates, allowing the modeling of tilt about two axes. The resulting tilt reactions for the two axes are evaluated and compared.

Notes

Acknowledgements

The authors thank the German Research Foundation (DFG) for the financial support of the project with the Grant No.: TH 845/7-1 and FR 2779/6-1

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Maximilian Darnieder
    • 1
    Email author
  • Thomas Fröhlich
    • 2
  • René Theska
    • 1
  1. 1.Precision Engineering Group, Institute for Design and Precision Engineering, Department of Mechanical EngineeringTechnische Universität IlmenauIlmenauGermany
  2. 2.Process Measurement Group, Institute for Process Measurement and Sensor Technology, Department of Mechanical EngineeringTechnische Universität IlmenauIlmenauGermany

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