Force-displacement measurement using simultaneous phase-shifting technique

Hong Yih Yeh, Ying Kai Hsu, Ju Yi Lee, An Chi Wei

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


This paper presents a novel simultaneous phase-shifting technique for force-displacement measurement. A demonstration with instantaneous 4-step phase shift for measuring displacement through shadow moiré is reported. The merits of the proposed technique consist of fewer signal wires and less susceptibility to electromagnetic waves and vibrations. The experimental results show that the proposed design has a good linear relationship between the force and the displacement, leading to various applications, such as tactile sensors.

Original languageEnglish
Article numberSJJD02
JournalJapanese Journal of Applied Physics
Issue numberSJ
StatePublished - 2019


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