6S黑帶培訓教程(英文版)

Scope of Module

Process Variation

Process Capability

Specification, Process and Control Limits

Process Potential vs Process Performance

Short-Term vs Long-Term Process Capability

Process Capability for Non-Normal Data

Cycle-Time (Exponential Distribution)

Reject Rate (Binomial Distribution)

Defect Rate (Poisson Distribution)

Process Variation

Process Variation is the inevitable differences among individual

measurements or units produced by a process.

Sources of Variation

within unit (positional variation)

between units (unit-unit variation)

between lots (lot-lot variation)

between lines (line-line variation)

across time (time-time variation)

measurement error (repeatability & reproducibility)