CH 20-?????(System Reliability)

1
CH 20-?????(System Reliability)

• ??????
• ?????
• ????????????

2
??????

• 1.  ????
•   ?????? Rs R1 R2 R3

3
??????

• 2. ????
• ?????? Rs 1 ((1-R1) (1-R2))

4
??????

• 3. ?????

5
?????

• 1. ???? (Poisson D.)
• ??????????,?t?????????????????????????
• 0? 1?
• 2? ..
• k?
• ???t??????? P ,

6
?????

• 2. ????
•   a. ????
• ???? n??????,??????? (?P),???????

7
?????

• 2. ????
•  b. ????
• ?????????????
• ?????????????

8
?????

• 2. ????
•  c.?????MTBF
• ??????
• ??????
• ?n????

9
?????

• 2. ????
•  d.?????????????? (????????P)

• ????????
• ??????????????????????
• ????????????????
• ??????,???????100??

10
????????????

• 1. ??????(Safety Margin)

???? µs /µl
11
????????????

• 2.???(De-rating)?????????????
• 3.??????(Redundancy)
• 4.?????(Burn-in)
• 5.?????(Preventive maintenance,PM)
• 6.???????? (DFX)
• 7.?????????
• 8.??????
• 9.?????????

12
DFX

• DFA Design for Assembly
• DFM Design for Manufacturing
• DFM Design for Maintainability
• DFT Design for Test
• DFR Design for Reliability