مقایسهٔ روش‌ها

	تحلیل علل ریشه‌ای قوی (Robust Root Cause Analysis - Robust RCA)	تحلیل علل ریشه‌ای
حوزه	طراحی آزمایش	مدیریت کیفیت
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1990s–2000s	1986
پدیدآور	Synthesised from RCA practice (Kepner-Tregoe, 1960s) and Taguchi robustness principles (1980s–1990s)	Kaoru Ishikawa
نوع	Hybrid quality-engineering diagnostic method	Structured causal-inference tool
منبع بنیادین	Andersen, B., & Fagerhaug, T. (2006). Root Cause Analysis: Simplified Tools and Techniques (2nd ed.). ASQ Quality Press. ISBN: 978-0873896924	Ishikawa, K. (1986). Guide to Quality Control (2nd ed.). Asian Productivity Organization. ISBN: 978-92-833-1036-7
نام‌های دیگر	Robust RCA, Robustness-Integrated Root Cause Analysis, RRCA	Cause-and-Effect Analysis, Fishbone Analysis, Ishikawa Diagram, Kök Neden Analizi
مرتبط	6	3
خلاصه	Robust Root Cause Analysis (Robust RCA) integrates classical root cause investigation techniques — such as the 5-Whys, Ishikawa diagrams, and fault trees — with Taguchi's robustness thinking to identify not only the primary cause of a failure but also the noise factors and variability sources that allow the failure to occur repeatedly. The result is corrective actions that eliminate the root cause and make the system inherently insensitive to future variation.	Root Cause Analysis (RCA) is a structured, systematic method for identifying the fundamental causes of defects, failures, or undesirable outcomes rather than treating surface-level symptoms. Popularised by Japanese quality engineer Kaoru Ishikawa in the 1960s–1980s, and formally codified in his 1986 Guide to Quality Control, RCA combines the Ishikawa (fishbone) diagram with the iterative 5 Whys questioning technique to trace causal chains back to their origin.