Determining the Initial Gap Distribution (Short-Term Statistics)main topic
Determining the Initial Gap Distribution (Short-Term Statistics)See the notation used in the equations below:
|
mGap,ST |
= |
S mi Ci Vi Ni |
Short-term gap mean before allocation |
|---|---|---|---|
|
sGap,ST |
= |
|
Short-term gap standard deviation before allocation |
|
Z.LSL(ST) |
= = = |
(T - LSL) / sGap,ST |
If only lower specification on the assembly gap is given If only upper specification in the assembly gap is given If neither lower nor upper specification in the assembly gap |
|
Z.USL(ST) |
= = |
(USL- T) / sGap,ST |
If only upper specification on the assembly gap is given Otherwise |
|
Z.BenchGap,ST |
= = = |
F-1(F(Z.USL(ST)) - (F(-Z.LSL(ST))) Z.USL(ST) Z.LSL(ST) |
If neither lower nor upper specification in the assembly gap If only upper specification in the assembly gap is given Otherwise |
For corresponding calculations for long-term statistics, see Determining the initial gap distribution (long-term statistics).
