Global Journal of Computer Science and Technology, C: Software & Data Engineering, Volume 22 Issue 2

From the boiler drum water recommended quantity and following the same steps of 1, the pH value (10.8 - 11.4) and the Sodium Phosphate as PO4 (29 - 34) Fuzzy Logic Rule Base System will be developed using the parameters from table1. The steps in the algorithm of 1aare followed in the system design and development of the pH value and Sodium Phosphate as PO4 membership function and fuzzy logic rule base system. Graph 2: Show above is a graph of the membership function of pH ranging between 10.8 ppm (min value) to 11.4 ppm (maxi value). R1: IF STATE= (10.8 OR 10.75) AND TARGET = 11.THEN ALERT R5: IF STATE= (10.8 OR 10.75 OR 11.1 OR 11.25) AND TARGET =11.4 THEN ALERT Listing 5.a R1: IF STATE= (10.8 OR 10.75) AND TARGET = 11.1 THEN SET STATE=11.1 R5: IF STATE= (10.8 OR 10.75 OR 11.1 OR 11.25) AND TARGET = 11.4 THEN SET STATE=11.1 Listing 5.b Listing 5. Listing 5.a Manual mode, and Listing 5.b Automatic mode, are both the final Rule-Base System used in the Inference Engine of Sodium Phosphate as PO4 ranging between 10.8ppm (mini value) to 11.5ppm (maxi value). Table 5: Membership Function of Numeric Values of pH Ranging Between 10.8 ppm (mini value) to 11.4 ppm (maxi value) table. State Target(s) - V/Low Low Normal High V/High V/Low No/C 10.75 11.1 11.25 11.4 Low 10.8 No/C 11.1 11.25 11.4 Normal 10.8 10.75 No/C 11.25 11.4 High 10.8 10.75 11.1 No/C 11.4 V/High 10.8 10.75 11.1 11.25 No/C Graph 3: A Graph of Membership Function of Sodium Phosphate as PO4 ranging between 29ppm (minimum value) to 34ppm (maximum value). Table 6: Membership Function of Numeric Values of Sodium Phosphate as PO4 Ranging between 29ppm (Min value) to 34ppm (Maxi value). State Target(s) - V/low Low Normal High V/high V/Low No/C 30.25 30.5 32.75 34 Low 29 No/C 30.5 32.75 34 Normal 29 30.25 No/C 32.75 34 High 29 30.25 30.5 No/C 34 V/High 29 30.25 30.5 32.75 No/C R1: IF STATE= (29 OR 8.5) AND TARGET = 9 THEN ALERT R5: IF STATE= (29 OR 8.75 OR 9 OR 9.25) AND TARGET =9.5 THEN ALERT Listing 6.a R1: IF STATE= (29 OR 30.25) AND TARGET = 30.5 THEN SET STATE=30.5 R5: IF STATE= (29 OR 30.35 OR 30.5 OR 32.75) AND TARGET =34 THEN SET STATE=30.5 Listing 6.b Listing 6. Listing 4.a Manual mode, and Listing 4.b Automatic mode, are both the final Rule Base System used in the Inference Engine of pH value at 25oC ranging between 29ppm (mini value) to 34ppm (maxi value). d) MembershipData and Fuzzy Logic System Class Diagram The class diagram of the designed project class files is written in Java programming language (JPL). The diagram shows the private, public methods and variables of each class. It also shows how each class relates to one another, through inheritance (i.e., extension) or implementation (the use of interface class) as show by the lines. The expert system of the proposed system has two major selected class for the purposed of this research, which is the Membership Data class, and the Fuzzy Logic System are shown below. Steam Package Boiler Expert System for Control and Maintenance of Fertilizer Plants Using Rule-Base Fuzzy Logic Global Journal of Computer Science and Technology Volume XXII Issue II Version I 31 Year 2022 ( ) C © 2022 Global Journals