PDCA

Also known as PDSA, OPDCA, Shewhart Cycle

thumb|right|The plan–do–check–act cycle PDCA (plan–do–check–act), sometimes called plan–do–check–adjust is an iterative design and management method used in business for the control and continual improvement of processes and products. It is also known as the Shewhart cycle, or the control circle/cycle. Another version of this PDCA cycle is OPDCA. The added stands for observation or as some versions say: "Observe the current condition." This emphasis on observation and current condition has currency with the literature on lean manufacturing and the Toyota Production System. The PDCA cycle, with