Estimating Ground Inclination Using Strain Sensors with Fourier Series Representation
An embedded measurement system for foot orthosis during gait is proposed. Strain gauge sensors were mounted on a foot orthosis to give information about strain in the sagittal plane. The ankle angle of the orthosis was fixed and strain characteristics were therefore changed when walking on slopes. W...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | Journal of Robotics |
| Online Access: | http://dx.doi.org/10.1155/2010/465618 |
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| _version_ | 1832567977491300352 |
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| author | Wolfgang Svensson Ulf Holmberg |
| author_facet | Wolfgang Svensson Ulf Holmberg |
| author_sort | Wolfgang Svensson |
| collection | DOAJ |
| description | An embedded measurement system for foot orthosis
during gait is proposed. Strain gauge sensors were mounted on
a foot orthosis to give information about strain in the sagittal
plane. The ankle angle of the orthosis was fixed and strain
characteristics were therefore changed when walking on slopes.
With a Fourier series representation of the strain during a gait
cycle, ground angle at different walking speeds and inclinations
could be estimated with similar accuracy as previous studies
using kinematically based estimators. Furthermore, if the angle
of the mechanical foot ankle was changed, the sensing technique
still could estimate ground angle without need for recalibration
as opposed to kinematical sensors. This indicates that embedded
strain sensors can be used for online control of future orthoses
with inclination adaptation. Also, there would be no need to
recalibrate the sensing system when changing shoes with different
heel heights. |
| format | Article |
| id | doaj-art-ee29255c844444a2935d8e13242b73d1 |
| institution | Kabale University |
| issn | 1687-9600 1687-9619 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Robotics |
| spelling | doaj-art-ee29255c844444a2935d8e13242b73d12025-02-03T01:00:10ZengWileyJournal of Robotics1687-96001687-96192010-01-01201010.1155/2010/465618465618Estimating Ground Inclination Using Strain Sensors with Fourier Series RepresentationWolfgang Svensson0Ulf Holmberg1Intelligent System Laboratory, IDE Department, Halmstad University, Box 823, 301 18 Halmstad, SwedenIntelligent System Laboratory, IDE Department, Halmstad University, Box 823, 301 18 Halmstad, SwedenAn embedded measurement system for foot orthosis during gait is proposed. Strain gauge sensors were mounted on a foot orthosis to give information about strain in the sagittal plane. The ankle angle of the orthosis was fixed and strain characteristics were therefore changed when walking on slopes. With a Fourier series representation of the strain during a gait cycle, ground angle at different walking speeds and inclinations could be estimated with similar accuracy as previous studies using kinematically based estimators. Furthermore, if the angle of the mechanical foot ankle was changed, the sensing technique still could estimate ground angle without need for recalibration as opposed to kinematical sensors. This indicates that embedded strain sensors can be used for online control of future orthoses with inclination adaptation. Also, there would be no need to recalibrate the sensing system when changing shoes with different heel heights.http://dx.doi.org/10.1155/2010/465618 |
| spellingShingle | Wolfgang Svensson Ulf Holmberg Estimating Ground Inclination Using Strain Sensors with Fourier Series Representation Journal of Robotics |
| title | Estimating Ground Inclination Using Strain Sensors with Fourier Series Representation |
| title_full | Estimating Ground Inclination Using Strain Sensors with Fourier Series Representation |
| title_fullStr | Estimating Ground Inclination Using Strain Sensors with Fourier Series Representation |
| title_full_unstemmed | Estimating Ground Inclination Using Strain Sensors with Fourier Series Representation |
| title_short | Estimating Ground Inclination Using Strain Sensors with Fourier Series Representation |
| title_sort | estimating ground inclination using strain sensors with fourier series representation |
| url | http://dx.doi.org/10.1155/2010/465618 |
| work_keys_str_mv | AT wolfgangsvensson estimatinggroundinclinationusingstrainsensorswithfourierseriesrepresentation AT ulfholmberg estimatinggroundinclinationusingstrainsensorswithfourierseriesrepresentation |