Journal of Mechanical Design
Volume 115, Number 1 (Mar. 1993), Pages 5-13.
The Taguchi method of product design is
an experimental approximation to
minimizing the expected value of target variance
for certain classes of problems.
Taguchi's method is extended to designs which involve variables
each of which has a range of values
all of which must be satisfied ( necessity), and
designs which involve variables each of which has a range
of values any of which might be used ( possibility).
Tuning parameters, as a part of the design process, are also
demonstrated within Taguchi's method.
The method is also extended to solve design problems with
constraints, invoking the methods of constrained optimization.
Finally, the Taguchi method uses a factorial method to search
the design space, with a confined definition of
an optimal solution. This is compared with
other methods of searching the design space
and their definitions of an optimal solution.