Paper Info
Title
Development of three-dimensional motion measuring device for the human ankle joint by using parallel link mechanism.
Abstract
This paper presents a novel ankle motion measuring device that can measure three-dimensional motions without a motion capture system (MCS). We adapted a parallel link mechanism for the device using six wire-type displacement sensors to measure the ankle joint motions in six degrees of freedom (six-DOF). We define the motions of a foot plate which is attached to a foot sole as ankle joint motions. A posture of the foot plate, i.e., the three-dimensional position (x, y, z) and rotation angle (θ, Φ, ψ), is numerically calculated by solving the forward kinematics of the developed device. We conducted performance verification experiments of the developed device by comparing these results with those of the MCS. The experimental results show that the maximum root mean square error of the three-dimensional position and rotation angle measured by the developed device are 2.6 mm and 1.5°, respectively. This measuring performance of the developed device indicates that the ankle motion measuring device is accurate and valid. Moreover, this device enables physical therapists to easily measure ankle motions with an accuracy as high as that of an MCS.
Year
DOI
Venue
2014
10.1109/EMBC.2014.6944589
EMBC
Keywords
Field
DocType
parallel link mechanism,numerical calculation,motion measurement,biomedical measurement,numerical analysis,bone,biomedical equipment,rotation angle,human ankle joint motions,kinematics,degree-of-freedom,root mean square error,forward kinematics,wire-type displacement sensors,three-dimensional position,three-dimensional ankle motion measuring device,physical therapists
Engineering drawing,Computer science,Ankle
Conference
Volume
ISSN
Citations 
2014
1557-170X
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Teru Yonezawa110.74
Takayuki Onodera211.07
Ming Ding3126.35
Hiroshi Mizoguchi436091.39
Hiroshi Takemura5119.62
Takeki Ogitsu6128.09