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Taguchi Robust Design

The Robust Design concept was pioneered by Genichi Taguchi, and is embodied in the Taguchi approach to Experimental Design.

Taguchi focused on reducing variation in design. He realized that it is better to have a product that gives consistently good results than one that can give better results but is inconsistent. He expressed this as the 'robustness' of the design.

Taguchi developed a quantitative model, the Taguchi Loss Function, that allowed the design with the lowest overall cost to be identified.

Taguchi then developed an approach to designing products around that achieved the most robust solution. This design process has three stages:

• system design: use scientific and engineering principles to create a prototype
• parameter design: find the settings for the product and process parameters to minimize variation
• tolerances: set tolerances on the control parameters to minimize the loss

 The Design of Experiments is covered in the MiC Quality basic Design of Experiments course and Advanced Design of Experiments course. Try out our courses by taking the first module of the Primer in Statistics free of charge.
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