Research on the Optimized Uprooted Speed Model of Cassava Root

In order to obtain the optimized manual uprooted speed model of cassava root and the mechanical optimized uprooted speed model, the acceleration curves of cassava root uprooting of the experienced farmers are tested and the changing laws of the curves are studied by statistical analysis and nonlinear fitting method. Then, the optimized manual uprooted speed model is selected by the laws and based on it the mechanical optimized uprooted speed model is established. The results show that the optimized manual uprooted speed model is high nonlinearity, but root dithering accompanies the process of uprooting.The speed variation curves can be superimposed by line and sine curve or concave downward parabola and sine curve.The latter is selected as the form of the mechanical optimized uprooted speed model for reducing power consumption and harvest losses.