Contactless torque/speed sensing module with digital signal processing circuit

Chi Ting Yeh, Nan-Chyuan Tsai, Hsin Lin Chiu, Chung Yang Sue

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A contactless torque/speed sensing module with digital signal processing circuit is designed and studied.To enhance more sensitivity with respect to the exerted torque, the cross-section of the mechanical structure is designed to be orange -slicelikeand two links are connected to the both sides of the flexible orange-slice-like body. To realize this novel torque sensor applied to high-speed shafts, a couple of photo interrupters are equipped. In addition, there are numerous reflective strips attached to the links to cooperate with photo interrupters. Once the flexible body is deformed by an external torque, a relative angle between the two links is induced. Therefore, the two pulses sequences, out of the two corresponding photo detectors, would present a certain degree of time delay.By conversion of this time delay between the two pulse sequences, the exerted torque can be quantified. A set of digital signal processing circuit, which mainly consists of counter ICs, is incorporated to convert the time delay and time period (i.e., inverse of the shaft speed) into digital data in terms of torque and rotational speed of shaft so that almost no signal interference is involved. One of merits of the proposed torque sensor is: real-time measurement on torque applied becomes feasible even if the shaft is rotating at high speed. Another advantage of the fully-digital signal processing circuit is: no need to conduct A/D conversion and free of noise, cross-talk and EMI.

Original languageEnglish
Title of host publicationInformatics in Control, Automation and Robotics - 12th International Conference, ICINCO 2015, Revised Selected Papers
EditorsJoaquim Filipe, Oleg Gusikhin, Jurek Sasiadek, Kurosh Madani
PublisherSpringer Verlag
Pages261-275
Number of pages15
ISBN (Print)9783319264516
DOIs
Publication statusPublished - 2015 Jan 1
Event12th International Conference on Informatics in Control, Automation and Robotics, ICINCO 2015 - Colmar, Alsace, France
Duration: 2015 Jul 212015 Jul 23

Publication series

NameLecture Notes in Electrical Engineering
Volume370
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Other

Other12th International Conference on Informatics in Control, Automation and Robotics, ICINCO 2015
CountryFrance
CityColmar, Alsace
Period15-07-2115-07-23

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering

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