88. Statistical Process Control (SPC)
ایننسبتهابهشماکمکمیکندکه:
پیشبینیاینکهخرابیهادرسمتمشخصهبیشتراتفاقمیافتدیاسمت
مشخصهپایین.
تصمیمگیریدرموردمیانگینفرایند
تصمیمگیریدرمورداینکهآیاگستردگیتلورانسرادرنظربگیریم.
تصمیمگیریدرموردسطحبازرسیموردنیاز.
89.
90. Cisplatin injection finished Dosage
form Analytical Data
of pH and Assay values are
tabulated in below to explain the
process capability index of
pharmaceutical drug products.
97. • Individuals (I) chart
• Moving Range (MR) chart
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Capability Analysis, I-MR Control Chart
98. • measure pH for 25 consecutive batches
• Choose Stat > Control Charts > Variables Charts for
Individuals > I-MR and select pH as the Variable
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Capability Analysis, I-MR Control Chart
99. • so click I-MR Options, and then choose Tests
• Choose "Perform all tests for special causes," and then click OK in
each dialog box
• When an observation fails a test, Minitab reports it in the Session
window and marks it on the I chart. A failed point indicates a
nonrandom pattern in the data that should be investigated.
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Capability Analysis, I-MR Control Chart
101. Steps in Minitab to run a process
capability analysis:
1-Click Stat → Basic Statistics →
Normality Test.
2-A new window named “Normality
Test” pops up.
3-Select “HtBk” as the variable.
Capability Analysis, Normal OR Non-Normal?
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102. 4-Click “OK.”
5-The histogram and the normality
test results appear in the new
window.
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Capability Analysis, Normal OR Non-Normal?
103. 4-Click “OK.”
5-The histogram and the normality
test results appear in the new
window.
• In this example, the p-value is
0.275, greater than the alpha level
(0.05). We conclude that the data
are normally distributed.
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Capability Analysis, Normal OR Non-Normal?
104. 6-Click Stat → Quality Tools →
Capability Analysis→ Normal.
7-A new window named
“Capability Analysis(Normal
Distribution)” pops up.
8-Select “HtBk” as the single
column and enter “1” as the
subgroup size.
9-Enter “6” as the “Lower spec”
and “7” as the “Upper spec”
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Capability Analysis, Normal
105. 10-Click “Options” button and
another new window named
“Capability Analysis(Normal
Distribution) – Options” pops
up.
11-Enter “6.5” as the target and
click “OK.”
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Capability Analysis, Normal
106. 12-Click “OK” in the “Capability
Analysis(Normal Distribution)”
window.
13-The capability analysis results
appear in the new window.
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Capability Analysis, Normal
-مقدار که شود می توصیهCp/Cpkبرابر1/33باشد بیشتر یا.