Page 198 - 2024-Vol20-Issue2

194 | Al-mtory, Alnahwi & Ali

START CDOA was applied to two sets of benchmark functions [37],
namely unimodal and multimodal functions as listed in Table
SET THE ENVIROMENT CONDITION RANGE AND THE I. The algorithm has been performed using MATLAB R2020a.
BOUNDARY REIGN The proposed algorithm is compared with the following algo-
rithms to highlight its high performance:
SET THE DIMENSION AND NUMBER OF PITTING A. particle swarm optimization [4].
INTER MAXIMUM NUMBER OF ITTIARSTION B. A modified camel algorithm [11].
INITIALIZE THE VALUE OF X BY USING EQ (3) C. Crow Searching Algorithm [38].
D. Sine Cosine Optimization [39].
SUBJECTED THE VALUE OF X IN COST FUNCTION
Algorithm 1 Corrosion Diffusion Optimization Algorithm
DETERMINE THE CURRENT BEST SOLUTION (CDOA)

1. Set the range of environment condition, cathode voltage,

and anode voltage.

2. Set number of pitting (w) and number of electrons trans-

ferred (N) and number of maximum iteration.

3.Initialized the cell voltage from
xni.iter = xmin + RAND * (xmax - xmin)

4.Determine the value of cost function.

IF ITR<ITER_MAX 5.Determine the current best voltage.

YES 6.For I < itramax.

NO 7.Initialized environment factor from

ENVf actor = LOENCON + RAND(HIENCON - LOENCON )

8. Determine the environment effect from
ENVFACT OR-LOENCON
CALCULATE THE ENVIROMINT FACTOR FROM EQ(5), E NVE F F ECT = 1+ HIENCON -LOENCON
AND CALCULATE THE ENVIROMENT FROM EQ(4)
9. Calculate the energy level in

CALCULATE THE ENERGY LEVEL FROM EQ(6), AND uni f orm rand[lowvoltage, highvoltage] * (xoldbest -
CALCULATE SUME OF ENERGY ROW xprivous)

10.Determine the sum of the row.

11. If sum of row < 0

SUM OF ENERGY LEVEL < 12. Calculate the update of x as
0 xdi iter = xdi iter-1 + ENVEFFECT * (xdi iter best -

NO YES xdi iter-1 best )

13. Else .

REMAINE THE VALUE OF 14. Remain the value of x as pervious value
X AS PRIVUSE VALUE AS xdi iter = xdi iter-1

EQ(8) 15.End if.

CACULATE THE NEW 16.Subject the resulted pitting to the fitness function
VALUE OF X FROM EQ(7)
17.Determine the current best voltage

18.End for.

DETERMINE THE COST FUNCTION VALUE 19.Determine the best voltage

DETERMINE THE BEST SOLUTION OF THE CURRENT E. Fungi kingdom algorithm [16].
ITERATION Different variable dimensions (5, 10, 15, and 20) were applied
on each algorithm. The comparison has been carry out under
END the same conditions for all algorithms, where the maximum
iteration is equal to 1000, the variable size is equal to 50,
Fig. 2. Flow chart for corrosion diffusion optimization and the dimensions of each variable are as mentions above.
algorithm (CDOA). Note that all benchmark functions have a minimum when the
variable value is equal to zero. For the purpose of comparison