Calibration methods of voltage-to-distance function for an electromagnetic articulometer (EMA) system

T. Kaburagi, M. Honda

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

In electromagnetic articulometer (EMA) systems, the relationship between the voltage of the received signal and the distance between the transmitter and receiver coils is represented by a voltage-to-distance (VD) function. This paper describes an adaptive calibration method for determining unknown parameters in the VD function in which the parameters are determined using automatically selected local calibration data. This method is compared with the conventional fixed method in which the parameters are computed from calibration data covering the entire measurement area. Experimental results show that the measurement error of the adaptive method is 0.106 mm for a 14 x 14-cm measurement area and is less than half of that in the fixed method. In addition, this error is the same as that when the region of the receiver position is restricted to a 4x4-cm local area in the fixed method.

Original languageEnglish
Pages (from-to)2391-2394
Number of pages4
JournalJournal of the Acoustical Society of America
Volume101
Issue number4
DOIs
Publication statusPublished - Apr 26 1997
Externally publishedYes

Fingerprint

electromagnetism
electric potential
receivers
transmitters
coverings
coils
Calibration
Electromagnetic
Distance Function

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

Cite this

Calibration methods of voltage-to-distance function for an electromagnetic articulometer (EMA) system. / Kaburagi, T.; Honda, M.

In: Journal of the Acoustical Society of America, Vol. 101, No. 4, 26.04.1997, p. 2391-2394.

Research output: Contribution to journalArticle

@article{74fb8509a43041cdaa7991d29eb2315c,
title = "Calibration methods of voltage-to-distance function for an electromagnetic articulometer (EMA) system",
abstract = "In electromagnetic articulometer (EMA) systems, the relationship between the voltage of the received signal and the distance between the transmitter and receiver coils is represented by a voltage-to-distance (VD) function. This paper describes an adaptive calibration method for determining unknown parameters in the VD function in which the parameters are determined using automatically selected local calibration data. This method is compared with the conventional fixed method in which the parameters are computed from calibration data covering the entire measurement area. Experimental results show that the measurement error of the adaptive method is 0.106 mm for a 14 x 14-cm measurement area and is less than half of that in the fixed method. In addition, this error is the same as that when the region of the receiver position is restricted to a 4x4-cm local area in the fixed method.",
author = "T. Kaburagi and M. Honda",
year = "1997",
month = "4",
day = "26",
doi = "10.1121/1.418255",
language = "English",
volume = "101",
pages = "2391--2394",
journal = "Journal of the Acoustical Society of America",
issn = "0001-4966",
publisher = "Acoustical Society of America",
number = "4",

}

TY - JOUR

T1 - Calibration methods of voltage-to-distance function for an electromagnetic articulometer (EMA) system

AU - Kaburagi, T.

AU - Honda, M.

PY - 1997/4/26

Y1 - 1997/4/26

N2 - In electromagnetic articulometer (EMA) systems, the relationship between the voltage of the received signal and the distance between the transmitter and receiver coils is represented by a voltage-to-distance (VD) function. This paper describes an adaptive calibration method for determining unknown parameters in the VD function in which the parameters are determined using automatically selected local calibration data. This method is compared with the conventional fixed method in which the parameters are computed from calibration data covering the entire measurement area. Experimental results show that the measurement error of the adaptive method is 0.106 mm for a 14 x 14-cm measurement area and is less than half of that in the fixed method. In addition, this error is the same as that when the region of the receiver position is restricted to a 4x4-cm local area in the fixed method.

AB - In electromagnetic articulometer (EMA) systems, the relationship between the voltage of the received signal and the distance between the transmitter and receiver coils is represented by a voltage-to-distance (VD) function. This paper describes an adaptive calibration method for determining unknown parameters in the VD function in which the parameters are determined using automatically selected local calibration data. This method is compared with the conventional fixed method in which the parameters are computed from calibration data covering the entire measurement area. Experimental results show that the measurement error of the adaptive method is 0.106 mm for a 14 x 14-cm measurement area and is less than half of that in the fixed method. In addition, this error is the same as that when the region of the receiver position is restricted to a 4x4-cm local area in the fixed method.

UR - http://www.scopus.com/inward/record.url?scp=0031000147&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031000147&partnerID=8YFLogxK

U2 - 10.1121/1.418255

DO - 10.1121/1.418255

M3 - Article

AN - SCOPUS:0031000147

VL - 101

SP - 2391

EP - 2394

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

SN - 0001-4966

IS - 4

ER -