Measurement Error in Estimates of Sprint Velocity from a Laser Displacement Measurement Device
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چکیده
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Laser Doppler Displacement Measurement
Existing precision displacement-measuring devices are primarily based on linear encoders (optical or magnetic) or laser interferometers. Most encoders use grating scales and frequency counters, while most interferometers use stabilized lasers and fringe counters. In general, interferometers are more expensive and more accurate than linear encoders. However, there are large gaps in price and per...
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Center for Automotive Materials and Manufacturing National Research Council Canada 800 Collip Circle, London, Ontario, Canada, N6G 4X8 Contact: [email protected] Reviewed, accepted September 18, 2009 Abstract Non-contact freeform surface measurement is widely used in industry. To acquire the surface data, a laser displacement sensor and a motion system are typically used. One of the factors t...
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ژورنال
عنوان ژورنال: International Journal of Sports Medicine
سال: 2012
ISSN: 0172-4622,1439-3964
DOI: 10.1055/s-0031-1301313