Alkindi, - (2016) Studi Tentang Diagram Kontrol T2 Hotelling Fuzzy Dan W2 Serta Aplikasinya Pada Proses Produksi Tepung Terigu Palapa Di PT. Pioneer Flour Mill Industries. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Suatu produk memiliki critical quality tertentu. Produk dikategorikan
cacat apabila berada di luar dari batas spesifikasi yang telah ditentukan.
Pengukuran karakteristik kualitas berjenis variabel memungkinkan terjadi
kesalahan pengukuran. Salah satu contoh kesalahan pengukuran adalah nilai
pengukuran tidak sesuai dengan nilai aktual. Nilai pengukuran seringkali berada
di sekitar nilai aktual, selisih tersebut yang dapat menyebabkan ambiguitas. Jika
hasil pengukuran suatu produk menghasilkan suatu bilangan tertentu, maka
terdapat kemungkinan hasil pengukuran sebenarnya berada di kisaran bilangan
tertentu sebelumnya. Selisih tersebut yang dapat menyebabkan ambiguitas.
Ambiguitas pada produk karakteristik kualitas variabel dapat diatasi dengan
menggunakan diagram kontrol T2 Hotelling Fuzzy yang merupakan
pengembangan dari Diagram Kontrol T2 Hotelling. Pada penelitian ini akan
dibangun diagram kontrol T2 Hotelling Fuzzy dengan pendekatan fungsi
keanggotaan dan diagram kontrol W2 dengan pendekatan probabilitas. PT.
Pioneer Flour Industries telah melakukan pengontrolan terhadap proses produksi
tepung terigu “Palapa”. Variabel karakteristik kualitas yang dikontrol adalah
moisture (X1), glutten (X2), dan ash (X3). Fungsi keanggotaan untuk X1, X2, dan
X3 adalah fungsi keanggotaan gabungan antara kurva segitiga, trapesium, dan
linear. Dari hasil analisis dan pembahasan didapatkan kesimpulan bahwa lebih
baik menggunakan diagram kontrol W2 dengan pendekatan probabilitas
dibandingkan diagram kontrol T2 Hotelling Fuzzy dengan pendekatan fungsi
keanggotaan. Dengan menerapkan diagram kontrol T2 Hotelling Fuzzy dengan
pendekatan fungsi keanggotaan dengan 4 skenario menunjukkan bahwa proses
terkendali, tetapi dengan menerapkan diagram kontrol W2 dengan pendekatan
probabilitas menunjukkan bahwa proses produksi tidak terkendali.
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A product has a certain critical quality. A product is categorized as a defective product when that
product is out of defined specification limit. The measurement of characteristic quality typed
variable has a possibility to have an error measurement. One of the error samples is a
measurement value that did not match to the actual value. The measurement value is often placed
around its actual value, the difference can produce ambiguity. If the measurement results of a
certain product produce a specific number, then it has a possibility that the actual measurement is
around the previous specific number. That difference can produce ambiguity. The ambiguity of the
product of characteristic quality variable can be handled with T2 Hotelling Fuzzy control chart
which is the development from T2 Hotelling control chart. In this research were built the T2
Hotelling Fuzzy control chart with membership function approach, and W2 control chart with
probability approach. PT. Pioneer Flour Industries has controlled the productivity process of the
“Palapa” white flour. The controlled characteristic quality variables were moisture (X1), glutten
(X2), and ash(X3). The membership function for X1, X2, X3 is the combined membership function
between triangle, trapezium, and linear curve. From the analysis and discussion obtained the
conclusion that is better to use W2 control chart using probability approach than T2 Hotelling
Fuzzy control chart using membership function approach. By applying T2 Hotelling Fuzzy control
chart using membership function approach with four scenarios shows that the process is in
control, but by applying W2 control chart using probability approach shows that the process is out
of control.
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | RTSt 519.86 Alk s |
| Uncontrolled Keywords: | Diagram Kontrol Multivariate, Himpunan Fuzzy, Fungsi Keanggotaan, Probabilitas. |
| Subjects: | Q Science > QA Mathematics T Technology > TS Manufactures T Technology > TS Manufactures > TS156 Quality Control. QFD. Taguchi methods (Quality control) |
| Divisions: | Faculty of Mathematics and Science > Statistics > 49101-(S2) Master Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 10 Jan 2017 05:50 |
| Last Modified: | 26 Dec 2018 03:13 |
| URI: | http://repository.its.ac.id/id/eprint/1439 |
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