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Title: Development of computer-based environment for simulating the voluntary upper-limb movements of persons with disability
Authors: Tong, KY
Mak, AFT
Keywords: Simulation
Spline interpolation
Reaching movement
Orthotic systems
Issue Date: 2001
Publisher: Springer
Source: Medical and biological engineering and computing, 2001, v. 39, no. 4, p. 414-421 How to cite?
Journal: Medical and biological engineering and computing 
Abstract: Upper-limb orthotic systems have been designed for restoring the upperlimb functions of individuals with disabilities resulting from spinal cord injury (SCI), stroke and muscular dystrophy. These systems employ either functional electrical stimulation or external power. It is proposed that, instead of time-consuming and complicated monitoring using sensors and motion analysis, a software simulator with both angular displacement and acceleration parameters can facilitate the design of a control strategy for an orthosis. Reaching movements of three cervical SCI subjects are used to verify the simulator. A motion analysis system is used to measure the range of motion and joint angles during hand reaching. Results indicate that quaternion and spline curve techniques are suitable for interpolation of the hand reaching movements. The information needed for good simulation only compress the shoulder and elbow joint angles in a few key postures. Stimulated acceleration signals on the upper-arm segment have a high correlation coefficient (>0.9) and a small root mean squared error (<0.11 g) with a real bi-axial accelerometer.
ISSN: 0140-0118
EISSN: 1741-0444
DOI: 10.1007/BF02345362
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