eprintid: 3843
rev_number: 6
eprint_status: archive
userid: 270
dir: disk0/00/00/38/43
datestamp: 2019-12-19 03:15:51
lastmod: 2019-12-19 03:15:51
status_changed: 2019-12-19 03:15:51
type: article
metadata_visibility: show
creators_name: Tran, Thi Thuy Ha
creators_name: Nguyen, Dac Hai
creators_name: Vu, Quoc Tuan
creators_name: Pham, Quoc Thinh
creators_name: Nguyen, Ngoc An
creators_name: Chu, Duc Trinh
creators_name: Bui, Thanh Tung
creators_id: tttha@gmail.com
creators_id: haind75@gmail.com
creators_id: tvu.tuan@gmail.com
creators_id: thinhpq@tnu.edu.vnc
creators_id: ngocan@vnu.edu.vn
creators_id: trinhcd@vnu.edu.vn
creators_id: tungbt@vnu.edu.vn
title: Study on Design Optimization of a Capacitive Tilt Angle Sensor
ispublished: inpress
subjects: isi
divisions: cetr_uet
divisions: fac_fet
abstract: This paper presents a design optimization and validation of a two-axis cylindrical capacitive tilt angle sensor. The proposed sensor includes of five electrodes symmetrically arranged surrounding an air–liquid two phases cylindrical tube, forming two pairs of electrodes for roll and pith angle measurement. Cylindrical plastic tube filled partly with dielectric fluid with dielectric constant of 2. The proposed sensor can detect tilt angles in x-axis and y-axis, i.e. roll and pith angles. When the cylindrical plastic tube is rotated, the dielectric fluid covers a portion of the induction electrodes, thereby changing the differential capacitance value of the capacitor corresponding to the tilt angle. By measuring the capacitance change, the tilt angle can be estimated. Performance of the sensor was investigated by Finite element method using Comsol Multiphysics simulation software. Simulation results show the variation in capacitance with respect to the variation of tilt angle. Based on this simulation model, the structure of the electrodes was manipulated for maximizing the sensitivity for roll and pith sensing in an appropriate working range. Experiments were also conducted for validation. The experiment results are well matched with simulated results. The optimized sensor has working range from −70° to +70° with sensitivity of 3 mV/° in the roll angle and from −30° to +30° with sensitivity of 17 mV/° in the pitch angle.
date: 2019-08
date_type: published
publisher: Taylor & Francis
full_text_status: none
publication: IETE Journal of Research
pagerange: 1-8
refereed: TRUE
issn: 0377-2063
citation:   Tran, Thi Thuy Ha and Nguyen, Dac Hai and Vu, Quoc Tuan and Pham, Quoc Thinh and Nguyen, Ngoc An and Chu, Duc Trinh and Bui, Thanh Tung  (2019) Study on Design Optimization of a Capacitive Tilt Angle Sensor.  IETE Journal of Research .   pp. 1-8.  ISSN 0377-2063    (In Press)