Contoh Program Fuzzy Logic Menggunakan Java

/* Fuzzy Logic for decision support system Programmed by: Denny Hermawanto Address: KIM-LIPI Mail: [email protected] Copyright: 2008 */ import java.util.*; class ProjectFuzzy{ class Suhu{ public double data_suhu; private double rendah(){ if((data_suhu>=18)&&(data_suhu<=22)){ return (data_suhu - 18.0) / 4.0; } else if((data_suhu>=22)&&(data_suhu<=26)){ return (26.0 - data_suhu) / 4.0; } else{ return 0; } } private double normal(){ if((data_suhu>=22)&&(data_suhu<=26)){ return (data_suhu - 22.0) / 4.0; } else if((data_suhu>=26)&&(data_suhu<=32)){ return (32.0 - data_suhu) / 6.0; } else{ return 0; } } private double tinggi(){ if((data_suhu>=26)&&(data_suhu<=32)){ return (data_suhu - 26.0) / 6.0; } else if((data_suhu>=32)&&(data_suhu<=38)){ return (38.0 - data_suhu) / 6.0; } else{ return 0; }

} } class Kebisingan{ public double data_kebisingan; private double tenang(){ if((data_kebisingan>=35)&&(data_kebisingan<=55)){ return (data_kebisingan - 35.0) / 20.0; } else if((data_kebisingan>=55)&&(data_kebisingan<=75)){ return (75.0 - data_kebisingan) / 20.0; } else{ return 0; } } private double agakbising(){ if((data_kebisingan>=55)&&(data_kebisingan<=75)){ return (data_kebisingan - 55.0) / 20.0; } else if((data_kebisingan>=75)&&(data_kebisingan<=90)){ return (90.0 - data_kebisingan) / 15.0; } else{ return 0; } } private double bising(){ if((data_kebisingan>=75)&&(data_kebisingan<=90)){ return (data_kebisingan - 75.0) / 15.0; } else if((data_kebisingan>=90)&&(data_kebisingan<=105)){ return (105.0 - data_kebisingan) / 15.0; } else{ return 0; } } } class Pencahayaan{ public double data_pencahayaan; private double redup(){

if((data_pencahayaan>=0)&&(data_pencahayaan<=150)){ return (data_pencahayaan / 15.0); } else if((data_pencahayaan>=150)&&(data_pencahayaan<=300)){ return (300.0 - data_pencahayaan) / 150.0; } else{ return 0; } } private double agakterang(){ if((data_pencahayaan>=150)&&(data_pencahayaan<=300)){ return ((data_pencahayaan - 150.0) / 150.0); } else if((data_pencahayaan>=300)&&(data_pencahayaan<=500)){ return (500.0 - data_pencahayaan) / 200.0; } else{ return 0; } } private double terang(){ if((data_pencahayaan>=300)&&(data_pencahayaan<=500)){ return ((data_pencahayaan - 300.0) / 200.0); } else if((data_pencahayaan>=500)&&(data_pencahayaan<=700)){ return (700.0 - data_pencahayaan) / 200.0; } else{ return 0; } } } class Produk{ double [] rata_rata_product; Produk(){ rata_rata_product = new double[27]; rata_rata_product[0] = 148.00; rata_rata_product[1] = 150.90; rata_rata_product[2] = 146.50;

rata_rata_product[3] = 143.10; rata_rata_product[4] = 146.53; rata_rata_product[5] = 142.73; rata_rata_product[6] = 136.73; rata_rata_product[7] = 140.77; rata_rata_product[8] = 135.97; rata_rata_product[9] = 149.73; rata_rata_product[10] = 153.27; rata_rata_product[11] = 152.13; rata_rata_product[12] = 148.00; rata_rata_product[13] = 150.63; rata_rata_product[14] = 147.63; rata_rata_product[15] = 141.47; rata_rata_product[16] = 145.67; rata_rata_product[17] = 140.20; rata_rata_product[18] = 142.10; rata_rata_product[19] = 146.53; rata_rata_product[20] = 142.17; rata_rata_product[21] = 138.70; rata_rata_product[22] = 141.40; rata_rata_product[23] = 138.30; rata_rata_product[24] = 133.33; rata_rata_product[25] = 138.53; rata_rata_product[26] = 133.77;

} } private void Compute_Membership(){ suhu = new Suhu(); kebisingan = new Kebisingan(); pencahayaan = new Pencahayaan(); suhu.data_suhu = kondisi_suhu; u_suhu_rendah = suhu.rendah(); u_suhu_normal = suhu.normal(); u_suhu_tinggi = suhu.tinggi(); kebisingan.data_kebisingan = kondisi_kebisingan; u_kebisingan_tenang = kebisingan.tenang(); u_kebisingan_agakbising = kebisingan.agakbising(); u_kebisingan_bising = kebisingan.bising(); pencahayaan.data_pencahayaan = kondisi_pencahayaan; u_pencahayaan_redup = pencahayaan.redup(); u_pencahayaan_agakterang = pencahayaan.agakterang(); u_pencahayaan_terang = pencahayaan.terang(); } private void Apply_Rule(){ output_rule = new double[27]; u_output = new double[27]; produk = new Produk(); //produk.initialize_data(); //IF Suhu RENDAH and Kebisingan TENANG and Pencahayaan REDUP THEN Rata-rata product = 148.00; output_rule[0] = Find_Min(u_suhu_rendah, u_kebisingan_tenang, u_pencahayaan_redup); u_output[0] = produk.rata_rata_product[0]; //IF Suhu RENDAH and Kebisingan TENANG and Pencahayaan AGAKTERANG THEN Ratarata product = 150.90; output_rule[1] = Find_Min(u_suhu_rendah, u_kebisingan_tenang, u_pencahayaan_agakterang); u_output[1] = produk.rata_rata_product[1]; //IF Suhu RENDAH and Kebisingan TENANG and Pencahayaan TERANG THEN Rata-rata product = 146.50; output_rule[2] = Find_Min(u_suhu_rendah, u_kebisingan_tenang, u_pencahayaan_terang); u_output[2] = produk.rata_rata_product[2]; //IF Suhu RENDAH and Kebisingan AGAKBISING and Pencahayaan REDUP THEN Rata-rata product = 143.10; output_rule[3] = Find_Min(u_suhu_rendah, u_kebisingan_agakbising, u_pencahayaan_redup); u_output[3] = produk.rata_rata_product[3];

//IF Suhu RENDAH and Kebisingan AGAKBISING and Pencahayaan AGAKTERANG THEN Rata-rata product = 146.53; output_rule[4] = Find_Min(u_suhu_rendah, u_kebisingan_agakbising, u_pencahayaan_agakterang); u_output[4] = produk.rata_rata_product[4]; //IF Suhu RENDAH and Kebisingan AGAKBISING and Pencahayaan TERANG THEN Rata-rata product = 142.73; output_rule[5] = Find_Min(u_suhu_rendah, u_kebisingan_agakbising, u_pencahayaan_terang); u_output[5] = produk.rata_rata_product[5]; //IF Suhu RENDAH and Kebisingan BISING and Pencahayaan REDUP THEN Rata-rata product = 136.73; output_rule[6] = Find_Min(u_suhu_rendah, u_kebisingan_bising, u_pencahayaan_redup); u_output[6] = produk.rata_rata_product[6]; //IF Suhu RENDAH and Kebisingan BISING and Pencahayaan AGAKTERANG THEN Rata-rata product = 140.77; output_rule[7] = Find_Min(u_suhu_rendah, u_kebisingan_bising, u_pencahayaan_agakterang); u_output[7] = produk.rata_rata_product[7]; //IF Suhu RENDAH and Kebisingan BISING and Pencahayaan TERANG THEN Rata-rata product = 135.97; output_rule[8] = Find_Min(u_suhu_rendah, u_kebisingan_bising, u_pencahayaan_terang); u_output[8] = produk.rata_rata_product[8]; //IF Suhu NORMAL and Kebisingan TENANG and Pencahayaan REDUP THEN Rata-rata product = 149.73; output_rule[9] = Find_Min(u_suhu_normal, u_kebisingan_tenang, u_pencahayaan_redup); u_output[9] = produk.rata_rata_product[9]; //IF Suhu NORMAL and Kebisingan TENANG and Pencahayaan AGAKTERANG THEN Ratarata product = 153.27; output_rule[10] = Find_Min(u_suhu_normal, u_kebisingan_tenang, u_pencahayaan_agakterang); u_output[10] = produk.rata_rata_product[10]; //IF Suhu NORMAL and Kebisingan TENANG and Pencahayaan TERANG THEN Rata-rata product = 152.13; output_rule[11] = Find_Min(u_suhu_normal, u_kebisingan_tenang, u_pencahayaan_terang); u_output[11] = produk.rata_rata_product[11]; //IF Suhu NORMAL and Kebisingan AGAKBISING and Pencahayaan REDUP THEN Rata-rata product = 148.00; output_rule[12] = Find_Min(u_suhu_normal, u_kebisingan_agakbising, u_pencahayaan_redup); u_output[12] = produk.rata_rata_product[12]; //IF Suhu NORMAL and Kebisingan AGAKBISING and Pencahayaan AGAKTERANG THEN Rata-rata product = 150.63;

output_rule[13] = Find_Min(u_suhu_normal, u_kebisingan_agakbising, u_pencahayaan_agakterang); u_output[13] = produk.rata_rata_product[13]; //IF Suhu NORMAL and Kebisingan AGAKBISING and Pencahayaan TERANG THEN Rata-rata product = 147.63; output_rule[14] = Find_Min(u_suhu_normal, u_kebisingan_agakbising, u_pencahayaan_terang); u_output[14] = produk.rata_rata_product[14]; //IF Suhu NORMAL and Kebisingan BISING and Pencahayaan REDUP THEN Rata-rata product = 141.47; output_rule[15] = Find_Min(u_suhu_normal, u_kebisingan_bising, u_pencahayaan_redup); u_output[15] = produk.rata_rata_product[15]; //IF Suhu NORMAL and Kebisingan BISING and Pencahayaan AGAKTERANG THEN Rata-rata product = 145.67; output_rule[16] = Find_Min(u_suhu_normal, u_kebisingan_bising, u_pencahayaan_agakterang); u_output[16] = produk.rata_rata_product[16]; //IF Suhu NORMAL and Kebisingan BISING and Pencahayaan TERANG THEN Rata-rata product = 140.20; output_rule[17] = Find_Min(u_suhu_normal, u_kebisingan_bising, u_pencahayaan_terang); u_output[17] = produk.rata_rata_product[17]; //IF Suhu TINGGI and Kebisingan TENANG and Pencahayaan REDUP THEN Rata-rata product = 142.10; output_rule[18] = Find_Min(u_suhu_tinggi, u_kebisingan_tenang, u_pencahayaan_redup); u_output[18] = produk.rata_rata_product[18]; //IF Suhu TINGGI and Kebisingan TENANG and Pencahayaan AGAKTERANG THEN Rata-rata product = 146.53; output_rule[19] = Find_Min(u_suhu_tinggi, u_kebisingan_tenang, u_pencahayaan_agakterang); u_output[19] = produk.rata_rata_product[19]; //IF Suhu TINGGI and Kebisingan TENANG and Pencahayaan TERANG THEN Rata-rata product = 142.17; output_rule[20] = Find_Min(u_suhu_tinggi, u_kebisingan_tenang, u_pencahayaan_terang); u_output[20] = produk.rata_rata_product[20]; //IF Suhu TINGGI and Kebisingan AGAKBISING and Pencahayaan REDUP THEN Rata-rata product = 138.70; output_rule[21] = Find_Min(u_suhu_tinggi, u_kebisingan_agakbising, u_pencahayaan_redup); u_output[21] = produk.rata_rata_product[21]; //IF Suhu TINGGI and Kebisingan AGAKBISING and Pencahayaan AGAKTERANG THEN Rata-rata product = 141.40; output_rule[22] = Find_Min(u_suhu_tinggi, u_kebisingan_agakbising, u_pencahayaan_agakterang); u_output[22] = produk.rata_rata_product[22];

//IF Suhu TINGGI and Kebisingan AGAKBISING and Pencahayaan TERANG THEN Rata-rata product = 138.30; output_rule[23] = Find_Min(u_suhu_tinggi, u_kebisingan_agakbising, u_pencahayaan_terang); u_output[23] = produk.rata_rata_product[23]; //IF Suhu TINGGI and Kebisingan BISING and Pencahayaan REDUP THEN Rata-rata product = 133.33; output_rule[24] = Find_Min(u_suhu_tinggi, u_kebisingan_bising, u_pencahayaan_redup); u_output[24] = produk.rata_rata_product[24]; //IF Suhu TINGGI and Kebisingan BISING and Pencahayaan AGAKTERANG THEN Rata-rata product = 138.33; output_rule[25] = Find_Min(u_suhu_tinggi, u_kebisingan_bising, u_pencahayaan_agakterang); u_output[25] = produk.rata_rata_product[25]; //IF Suhu TINGGI and Kebisingan BISING and Pencahayaan TERANG THEN Rata-rata product = 133.77; output_rule[26] = Find_Min(u_suhu_tinggi, u_kebisingan_bising, u_pencahayaan_terang); u_output[26] = produk.rata_rata_product[26]; } private void Compute_Output(){ double z = 0; double temp1 = 0; double temp2 = 0; for(int i=0;i<27;i++){ temp1 += output_rule[i] * u_output[i]; temp2 += output_rule[i]; } //System.out.println("Temp1="+temp1); //System.out.println("Temp2="+temp2); z = temp1 / temp2; System.out.println("Fuzzy Out:" + z); } private double Find_Min(double a, double b, double c){ double result; List list = new ArrayList(3); list.add(a); list.add(b); list.add(c);

//Collections.sort(list); result = Collections.min(list); //System.out.println("Min:"+result); return result; } public void RunFuzzy(){ Compute_Membership(); Apply_Rule(); Compute_Output(); } public static void main(String[] args){ ProjectFuzzy myfuzzy = new ProjectFuzzy(); myfuzzy.kondisi_suhu = 22; System.out.println("Suhu:" + myfuzzy.kondisi_suhu); myfuzzy.kondisi_kebisingan = 55; System.out.println("Kebisingan:" + myfuzzy.kondisi_kebisingan); myfuzzy.kondisi_pencahayaan = 150; System.out.println("Pencahayaan:" + myfuzzy.kondisi_pencahayaan); myfuzzy.RunFuzzy(); } //variabel Suhu suhu; Kebisingan kebisingan; Pencahayaan pencahayaan; Produk produk; double kondisi_suhu; double kondisi_kebisingan; double kondisi_pencahayaan; double u_suhu_rendah; double u_suhu_normal; double u_suhu_tinggi; double u_kebisingan_tenang; double u_kebisingan_agakbising; double u_kebisingan_bising; double u_pencahayaan_redup; double u_pencahayaan_agakterang; double u_pencahayaan_terang; double[] u_output;

double[] output_rule; }