Cpm is an overall capability index defined as the ratio of the specification spread (USL - LSL) to the square root of the meansquareddeviation from the target.
Cpm是一个总体的能力指数，定义了均值偏离目标值的均方差的平方根和规范宽度的之间的比值。
2
Extend the expressions of the minimum meansquared error bounds of the references, and give the relations of the minimum meansquared error bounds of pose Angle and noise standard deviation.