Logika Fuzzy dan aplikasinya Dewi Liliana, M.KOM IT PNJ
Logika Fuzzy Logika Fuzzy, sering juga disebut himpunan fuzzy Himpunan fuzzy mampu merepresentasikan estimasi manusia yang bersifat ambigu.
Fuzzy Logic History In 1965,Fuzzy Set Theory was introduced by Professor Lotfi A. Zadeh (University of California at Berkeley). In 1974,Professor Ebrahim Mamdani (London University) applied the Fuzzy IF-THEN rule reasoning for automatic operation of a steam engine and that was the beginning of fuzzy control application. In 1980,the first industrial application report of a fuzzy controlled automatic operation system in a cement factory in Denmark was published. By 1987,many applications of fuzzy logic control were published. In 1990,the application of fuzzy logic to home electronics in Japan made a "fuzzy boom." The fuzzy boom in Japan had a strong impact on Korea and the United States. Now much research is carried out in worldwide.
Terminologi Logika Fuzzy Linguistic uncertainty. Logika Fuzzy berkaitan dengan bahasa ketidakpastian (linguistic uncertainty). Linguistic Variable dapat dinyatakan secara kuantitatif dengan fungsi keanggotaan/membership function. Fuzzification. Berdasarkan fungsi keanggotaan, nilai fuzzy untuk variabel masukan dikalkulasi/dihitung derajatkeanggotaannya. Rules dibangun dengan linguistic variable untuk menggambarkan fungsi dari sistem. Biasanya berbentuk Antecedent/Consequent IF x [AND/OR] y THEN z.
Model Linguistic Uncertainty
Standard Operations of Fuzzy Set Complement set A , union , and intersection represent the standard operations of fuzzy theory and are arranged as:
Fungsi Keanggotaan (Membership Function) Kurva Segitiga Kurva Trapesium Kurva Gauss Kurva Sigmoid
Kurva Segitiga
Kurva Segitiga
Contoh menghitung membership function A = (-3, 2, 4) ; B = (-1, 0, 6)
Kurva Trapesium
Kurva Trapesium
Kurva Gauss/Lonceng