Genichi Taguchi
Genichi Taguchi is a Japanese Statistician and
engineer whose concepts only began to make an impact in the West during the
1980s. Genichi Taguchi is well-known for developing a methodology to improve
quality and reduce costs, known as the "Taguchi Methods." In this
engineering approach to quality control, Taguchi calls for off-line quality
control, on-line quality control, and a system of experimental design to improve
quality and reduce costs. His main contributions have been to our understanding
of what product specification really means for quality and how such
specifications can be translated into cost effective production.
Taguchi has made a very influential contribution
to industrial statistics. Key elements of his quality philosophy include the
following:
· Taguchi loss function, used to measure
financial loss to society resulting from poor quality
· The philosophy of off-line quality control,
designing products and processes so that they are insensitive
("robust") to parameters outside the design engineer’s control and
· Innovations in the statistical design of
experiments
Features of Taguchi’s Contributions
· Taguchi was well known for developing a
methodology to improve quality of manufactured goods and to reduce costs. This
methodology referred to as ‘Taguchi’s method’ is used as a mechanism for
evaluating and implementing improvements in the desired characteristics of
products.
· Taguchi methods, encompasses the techniques
of both statistical process control (SPC) and the statistical aspects of the
procedure, process robustness and the quality improvement methodologies.
· Most revered concepts and Techniques of
Taguchi that have influenced the product quality and productivity are:
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