1, DMADV process
Namely, definition, measurement, analysis, design and verification. This model can make better use of the foundation of DMAIC process, but it is generally only suitable for local redesign of existing products or processes.
2.DMEDI process
It refers to definition (design), measurement (measurement), exploration (exploration), research and development (development) and implementation (implementation).
3.IDDOV process
That is, identification, definition, development, optimization and verification, was put forward by Mr. Chowdhury, president of ASI company in the United States. It is more suitable for the development of new products and new processes, but Chowdhury did not give the operation details of the process.
4.ICOV process
Namely, identification, characterization, optimization and verification, was put forward by Professor Yang Kai of Wayne State University.