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소진환,남요상,최창현,정연준 한국정밀농업학회 2017 정밀농업기술 Vol.4 No.1
<P> A agricultural tractor PTO(Power Take-Off) gear optimization was conducted. The PTO 1st and 3rd gears were analyzed using ANSYS. The SCM 420H was used as the material of the shaft and the gear. The contact and boundary condition were input to the model of PTO gear. In this study, PTO 1st and 3rd gears of agricultural tractor were. The simulation results show that the deformation amounts of the maximum power points of PTO 1st and 3rd gears were 0.16598, and 0.07517 mm, and the stresses were 3171.1, and 3114.6 N/mm<SUP>2</SUP>, respectively. The maximum torque points were 0.22982, and 0104080 mm, and the stresses were 4390.8, and 4312.6 N/mm<SUP>2</SUP>. The deformation amount and the stress of the PTO 1st and 3rd gears of the maximum torque point were increased by about 38%. During farm operation, gear breakage may occur more than the maximum power point at the maximum torque point of the engine. </P>
소진환,남요상,이바울 한국정밀농업학회 2017 정밀농업기술 Vol.4 No.1
<P> Recently, research on hybrid system and electric driven system have been actively studied in agriculture due to many problems such as environmental pollution and exhaustion of resource. The purpose of this study is to develop the motor driven electric transplanter by displacing the electric motor from the engine transplanter. The rated output and torque of the motor are 3kW and 15Nm at a rated speed of 2,000rpm, respectively. The electric transplanter consisted of planting, driving, control, hopper, and horizontal control part. The battery voltage was 48VDC to drive the motor. The rated power and torque of motor is 3kW, 15Nm at an motor rotational speed of 2,000rpm, respectively. The eco-friendly farming will be possible by applying the electric drive system to agricultural machinery. </P>
Power analysis of electric transplanter by planting distances
이바울,소진환,남요상,최창현,노현석,심종열,홍순중 충남대학교 농업과학연구소 2018 Korean Journal of Agricultural Science Vol.45 No.2
Electric drive technology is continually advanced to improve fuel efficiency in the automobile industry. It could improve the fuel efficiency of automobiles by 50% as well as agricultural machinery. The purpose of this study was to measure and analyze the power and current of an electric transplanter based on the planting distances during field operations. The electric transplanter was constructed by mounting the major components of a motor drive system onto a transplanter. The electric transplanter had a 3 kW motor power, and the major components included an inverter, battery, and a battery management system (BMS). The field tests were conducted by travelling at two speeds (300 and 760 mm/s) and by planting at three distances (260, 420 and 630 mm) with the working speed (300 mm/s), during travelling and transplanting. The results showed that the required power increased when the travelling speed was fast. Oneway ANOVA for the planting distance and Duncan’s multiple range test at a significance level of 0.05 were used to analyze the motor power using statistical analysis software. In addition, the required power increased when the planting distances were short at every working condition. The results of this study would provide useful information for the development an electric transplanter.