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articles:pdca-how_we_miss_shewarts_point [2021/07/10 14:59] – [A Major PDCA / PDSA Cycle Obstacle] rrandall | articles:pdca-how_we_miss_shewarts_point [2021/07/15 20:21] (current) – [A Better Alternative] rrandall | ||
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In his 4-day seminars during the 1980’s, Deming presented this version. Also, he warned Western audiences that the plan, do, check, and act version is inaccurate because the English word “check” means “to hold back.” Deming stated in the Moen, Nolan, and Provost manuscript, “//... be sure to call it PDSA, not the corruption PDCA//.” | In his 4-day seminars during the 1980’s, Deming presented this version. Also, he warned Western audiences that the plan, do, check, and act version is inaccurate because the English word “check” means “to hold back.” Deming stated in the Moen, Nolan, and Provost manuscript, “//... be sure to call it PDSA, not the corruption PDCA//.” | ||
- | ===== A Major PDCA / PDSA Cycle Obstacle | + | For a more detailed article on the history of PDCA / PDSA, read: {{ : |
+ | ===== Major PDCA / PDSA Cycle Obstacles | ||
- | A major obstacle | + | Major obstacles |
+ | * " | ||
+ | * " | ||
+ | * a " | ||
- | A Technical Contradiction is a situation that emerges when an attempt to improve a certain attribute (parameter) of a system leads to an unacceptable degradation of another attribute (parameter) of the same system. | + | A " |
+ | |||
+ | A " | ||
+ | |||
+ | A "Technical Contradiction" | ||
The Soviet inventor and science-fiction author Genrich Altshuller (1926-1998) and his colleagues, began developing the concept of TRIZ (Teoriya Resheniya Izobretatelskikh Zadatch), typically translated into English as the " | The Soviet inventor and science-fiction author Genrich Altshuller (1926-1998) and his colleagues, began developing the concept of TRIZ (Teoriya Resheniya Izobretatelskikh Zadatch), typically translated into English as the " | ||
- | By 1969, Altshuller had reviewed about 40,000 patent abstracts in order to find out in what way the innovation had taken place and developed the concept of technical contradictions, | + | By 1969, Altshuller had reviewed about 40,000 patent abstracts in order to find out in what way the innovation had taken place and developed the concept of technical contradictions, |
- | Lacking knowledge of TRIZ can result in a recurring exercise in futility. | + | Lacking knowledge of TRIZ can result in a recurring exercise in futility... leading to users constantly "// |
To learn more about TRIZ and the 40 TRIZ Principles, explore the [[https:// | To learn more about TRIZ and the 40 TRIZ Principles, explore the [[https:// | ||
+ | ===== A Better Alternative ===== | ||
+ | |||
+ | Clearly, " | ||
+ | |||
+ | Rather than use the PDCA model, a much better approach is to follow the DMAIC model (Define, Measure, Analyze, Improve and Control). As improvements are made, the PDCA cycle fails to address " | ||
+ | |||
+ | {{ : | ||
+ | As you move from one process to another, utilizing DMAIC, you can re-visit any of the processes previously improved to determine whether another DMAIC would be appropriate (for greater improvements). |