Simulação do desempenho trativo de microtrator agrícola de rodas com diferentes sistemas alternativos de propulsão.

Abstract

It was simulated by a computer program the dynamic behavior of agricultural wheeled microtractor with three types of motors: electric of alternating current, MCA; electric of continuous current, MCC; and of internal combustion of cycle "Otto", MCI. The results obtained from the traction assays in concrete track were compared. For the MCA and MCI microtractors, the used model tended to underestimate values of traction force, potency in the traction bar of the tractor and traction coefficient. For the MCC microtractor, the simulated values were close to those observed. The determination coefficients overcame 0,74, indicating that the implemented model was adapted and it can be used in both sensibility and optimization analyses of those machines