The last phase of the DMAIC is close to the PDCA Act. The whole issue is to perpetuate the results. Introduction The last phase of the DMAIC is close to the PDCA . The whole issue is to perpetuate the results achieved by ensuring that the performance does not degrade....
Control Charts is a historical tool of the SPC (statistical Process Control). They are used to monitor the parameters of a process to prevent drifts and to ensure quality. Introduction It was the engineer W. A. Shewhart who developed the principle of control charts in...
Used most often in small-series or very high-value-added production, it applies only for quantitative data and unit samples. Introduction The control chart individual and Moving range can be used to visualize the variation in the average and the extent of the data...
The C control chart allows to count the number of faults for constant samples. Introduction Control chart C is part of the family of cards with attributes. It is used to track the number of faults. In other words, it counts the faults on the contrary of the P and NP...
The NP control chart is the same as P-control chart, appropriate in cases where we have constant samples. Introduction The NP control chart is part of the attributes control chart. It is based on the same principle as the P-control chart, in the sense that it counts...
This Control Chart counts the same parameter as the C, but transforms it in proportion. Introduction The Control Chart U is part of the family of Control Chart with attributes. It counts the percentage of the average number of defaults in a sample. In relation to the...