Neutralizing pH value of sugarcane juice is the important factor to be considered in the sugar manufacturing process since it influences the quality of white sugar. The pH neutralization process is a complicated physicalchemistry process with strong characteristics of non-linearity and time-varying property. Hence there is no optimal solution to control the varying pH without mathematical modeling. For the systems whose mathematical model would be hard to derive, any alternative method could be used. Therefore PID control and Fuzzy Logic Control was used for the control in clarifying process of sugar juice based on relevant error values of real-time sample data from sugar manufacturing unit. The pH being non-linear in nature, PID control was ineffective for steep changes. In such cases LabVIEW based fuzzy logic method was used to optimize and control the neutralized pH value in the clarifying process of sugar juice. The simulation results indicate that this method had the good control effect. This will build a good foundation for stabilising the clarifying process and enhancing the quality of the purified juice and lastly enhancing the quality of white sugar.
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