Abstract
Abstract This paper describes a novel low-cost smart accurate capacitive absolute angular-position sensor with high accuracy and high resolution (18 bits r.m.s.). One of the novelties of this sensor is that, for each measurement, it uses all 24 segment electrodes along the circumference, each of them ranging from 0 to 0.3 pF. The capacitance values between these electrodes have a lot of redundancy with respect to the position to be measured. The electronic processing uses this redundancy to compensate for mechanical errors in the sensor in order to obtain an accurate measurement and to reduce the mechanical demands on the sensor. This novel approach can also be applied directly to capacitive absolute linear-position sensors. A simple and cheap oscillator is used to measure the various sensor capacitances. The oscillator converts the analog capacitance information into the time domain and is directly digitized by a microcontroller, eliminating the need for an expensive AD converter.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
