FORMULATION OF GENERALIZED FIELD DATA BASED MODEL FOR THE ELECTRICAL ENERGY EXPENDITURE DURING WHEAT GRINDING OPERATION
Keywords:
Wheat grinding, Field data based model, Sensitivity, OptimizationAbstract
This paper highlights the detailed methodology of mathematical model formulation for the electrical energy expenditure during the wheat grinding operation. This paper details the formulation of field data based model to analyze the impact of various machining field parameters on the electrical energy expenditure during the wheat grinding operation. In all, 34 independent variables are studied to analyze their effect on the dependent variable electrical energy expenditure. The independent variables are then grouped to form 7 dimensionless pi terms using the Buckinham’s Pi Theorem. Further, a model is developed using matrix analysis and the effect of the independent pi terms on the dependent pi term is established. Model derived by combining positive and negative pi terms, further analyzes the effect of the independent variables on the electrical energy expenditure. The models are validated to gauge the accuracy. Formulation of mathematical model and sensitivity analysis reveals that the environmental conditions in the workshop, majorly, ambient temperature, highly influences the electrical energy expenditure. Other significant parameter that has a direct relationship with electrical energy consumption is parameters related to the power generation in the machine. As the motor speed increases, the electrical energy expenditure shall increase. An increase in the values of other parameters such as distance between the pulleys, pulley rpm and diameter ratio also result increase in electrical energy expenditure.
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