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Six-sigma design (quality control)

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1 Author(s)
B. Smith ; Motorola Inc., Schaumburg, IL, USA

The approach to customer satisfaction taken at Motorola is described. It is based on two conclusions derived from various studies: A product is built in the shortest time and at the lowest cost if no mistake is made in the process; and if no defect can be found anywhere in the process of building a product for the customer, then the customer probably will not find one either. Beginning in 1987, Motorola designers were required to adopt +or-6-sigma tolerance limits, i.e., product design margins were to be twice the normal variation of the process. The way in which this was implemented in a six-step design process is described.<>

Published in:

IEEE Spectrum  (Volume:30 ,  Issue: 9 )