QUALITY DESIGN OF TAGUCHI’S DIGITAL DYNAMIC SYSTEMS
Keywords:Taguchi’s method, Digital dynamic system, Error, SN ratio, Threshold value
AbstractTaguchi’s method is a widely employed methodology in many different industries for improving product quality and process performance. Digital dynamic systems denote the problems where both the input and output are digital values in Taguchi’s method. When the signal factor levels are classified into two classes and the output is classified into two or more classes, two or more errors will occur in experiments. The digital dynamic systems are widely applied in the fields of telecommunication, computer operations, chemistry and tests of detection of medicine or environmental pollution. The SN ratio recommended by Taguchi is based on the errors with the same loss coefficient to optimize the problems. However, the losses due to the errors are not equal in practice. This paper proposes a general model for optimizing parameter design and selecting threshold value for the digital dynamic systems where the output is classified into four classes. The implementation and the effectiveness of the proposed approach are illustrated through two case studies.
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