Cart (Loading....) | Create Account
Close category search window

Noncontact capacitive torque sensor for use on a rotating axle

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Wolffenbuttel, R.F. ; Dept. of Electr. Eng., Delft Univ. of Technol., Netherlands ; Foerster, J.A.

The measurement of the torque in a mechanically loaded axle is often required for automotive power-train and engine-control systems. Torque sensing has been performed by mainly using strain gauges connected to the axle with slip rings to allow the electrical contacting. Noncontact magnetic and optical techniques have also been used. In the proposed capacitive torque sensor, two angular displacement sensors are spaced apart at a well-defined distance. The rotor of each of these capacitive displacement sensors is composed of an array of electrodes and sine-wave voltages with phase angles in the sequences 0°, 90°, 180°, 270° applied to it. These voltages are capacitively coupled from the stator to the rotor. The stator is also equipped with a readout electrode. The phase angle of the sine wave on this readout electrode is proportional to the rotor-to-stator electrode overlapping and thus proportional to the angular position. The phase difference between the output signals of the angular displacement transducers is a direct measure of the twist angle and thus of the torque in the axle. The sensor allows the noncontact torque measurement on a 10-mm-diameter steel axle in the 0-100-N-m range

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:39 ,  Issue: 6 )

Date of Publication:

Dec 1990

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.