한국농업기계학회:학술대회논문집 (Proceedings of the Korean Society for Agricultural Machinery Conference)
- 한국농업기계학회 1993년도 Proceedings of International Conference for Agricultural Machinery and Process Engineering
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- Pages.298-306
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- 1993
A PORTABLE TORQUE AND POWER MEASUREMENT SYSTEM FOR SMALL FARM EQUIPMENT BASED ON AN INSTRUMENTED PULLEY
- Pasikatan, M.C. (Paper to be presented at the International Conference for Agricultural Machinery and Process Engineering) ;
- Quick, G.R. (Senior Research Assistant and Head , Agricultural Engineering Division , International Rice Research Institute (IRRI))
- 발행 : 1993.10.01
초록
A portable torque and power measurement system for small farm equipment based on instrumented pulley was developed. The prototype pulley was machined from mild steel, with spokes serving as strain beams. Strain gages mounted to the spokes sense the bending strain due to the torque and convert this into millivolt output. Calibration results showed the torque-millivolt relationship was linear, while hysterisis and error were less than 1% fs. For power measurements, an additional tachmeter with dcvoltage output is necessary. With the tachometer , error in power measurement was +-1.03W or 0.2% fs. Field tests showed that for ease of installation, no machine alteration needed and safety, this system had advantage over other methods for small farm equipment.
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