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The purpose of this study is to develop an algorithm for real-time measurement of aggregate size by means of image processing. The tested materials were rock fragments for construction, which were sorted into five size categories by sieving. The average sizes of the categories were 7.14mm, 14.3mm, 25.4mm, 34.9mm, and 44.5mm. Surface images of the fragments were captured by a digital video camera under...
Three directional forces on tractor tires, the normal forces, lateral forces and thrusts, were measured during steady-state circular turning in a rice field. The tested tractors were a four-wheel drive, four-wheel steering (4WD-4WS) and a four-wheel drive, two-wheel steering (4WD-2WS) tractor. The measured forces were analyzed with the measured slip, side slip angle and the turning radius of the...
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