New non-contacting torque sensor based on the mechanoluminescence of ZnS:Cu microparticles

Ji Sik Kim, Gi Woo Kim

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

This paper presents a preliminary study investigating the development of a new type of non-contacting torque sensor based on the mechanoluminescence (ML) of a new microparticle (ZnS:Cu), which is intended to address the ML intensity decay present in a previous prototype torque measurement system with a conventional microparticle (SAO). An ad hoc heuristic model of hysteresis is proposed to characterize the loading rate-dependent characteristics of the ML intensity emitted from ZuS:Cu microparticle, and to estimate the torque input. The sinusoidal torque applied to a rotational shaft is successfully measured with a small error range by sensing the ML intensity without contacting. This study provides potential applications for the development of new non-contacting torque sensing technology widely used in various industrial areas such as automotives, robotics, rotors, and turbines.

Original languageEnglish
Pages (from-to)125-131
Number of pages7
JournalSensors and Actuators A: Physical
Volume218
DOIs
StatePublished - 1 Oct 2014

Keywords

  • Hysteresis model
  • Mechanoluminescence (ML)
  • Microparticle ZnS:Cu
  • Non-contacting torque sensor
  • Torque estimation

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