Design Test of an Unmanned Electric Tractor Based on Corn Seeding
Aiming at the problems of poor straightness and uneven power transmission during maize sowing with traditional tractor,this paper designed an unmanned electric tractor with traction force exceeding 10 kN under characteristic slip rate.First of all,according to the requirements of corn seeding agronomy,designed the whole structure of the unmanned electric tractor seeding unit,and designed the software and energy transfer architecture of the tractor according to the re-quirements of seeding.Then analyzed the power demand of the unmanned electric tractor under common working condi-tions,calculated the power demand of key components according to the trenching resistance,and got the parameters of the whole machine.At last,the vehicle performance was verified by the experiment test under walking and seeding con-ditions.The test results showed that:in the running condition,the traction power under the characteristic slip rate was 10 417 N,which met the design requirements,the voltage and current were stable output,and the transverse deviation was within 5 cm,which met the operation requirements.Under the sowing conditions,the traction power under the char-acteristic slip rate was 11 491 N,and the deviation of straightness of seedlings after seeding was within 5 cm,which met the agronomic requirements.Under standard working conditions,the power battery unit was stably discharged at different temperatures,and when the battery was discharged at 1 C,the capacity can run stably during the period from 5 A·h to 100 A·h,which was in line with agricultural operation standards.
unmanned electric tractorcorn seedingwalking conditionseeding condition
国家科技期刊平台
NSTL
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