Hysteresis compensation of piezoresistive carbon nanotube/polydimethylsiloxane composite-based force sensors

Ji Sik Kim, Gi Woo Kim

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

This paper provides a preliminary study on the hysteresis compensation of a piezoresistive silicon-based polymer composite, poly(dimethylsiloxane) dispersed with carbon nanotubes (CNTs), to demonstrate its feasibility as a conductive composite (i.e., a force-sensitive resistor) for force sensors. In this study, the potential use of the nanotube/polydimethylsiloxane (CNT/PDMS) as a force sensor is evaluated for the first time. The experimental results show that the electrical resistance of the CNT/PDMS composite changes in response to sinusoidal loading and static compressive load. The compensated output based on the Duhem hysteresis model shows a linear relationship. This simple hysteresis model can compensate for the nonlinear frequency-dependent hysteresis phenomenon when a dynamic sinusoidal force input is applied.

Original languageEnglish
Article number229
JournalSensors
Volume17
Issue number2
DOIs
StatePublished - 24 Jan 2017

Keywords

  • Carbon nanotube
  • Force sensor
  • Hysteresis compensation
  • Nanocomposite
  • Piezoresistive effect
  • Polydimethylsiloxane

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