Learning objectives Introduce explore orthogonality Study the standard oas Practice computing dOF of an experiment Learn how to select a standard oa Introduce means to modify Oas Consider studying interactions in Oas Robust System Design

Failure modes Noises lead to failure modes(Fm) One set of noise values leads to fm Opposite set of noise values leads to FM Simple problem solving chases the problem from Fm, to Fm, and back again but does not avoid both fms with the same set of design values-endless cycles of build/test/fIx(B/T/F) C Don Clausing 1998 6.881

Proposed Schedule Changes · Switch lecture No quiz Informal (ungraded) presentation of term project ideas Read Phadke ch. 7-- Construction Orthogonal Arrays -Quiz on ANOVA Noise experiment due Robust System Design

Ideal response Want Ideal Response to Signal -usuall straight-line function Actual response is determined by values of control factors and noise factors If noise factors are suppressed early, the en difficult problems only appear late Introduce noises early C Don Clausing 1998

Comments on hw#2 and Quiz #1 Questions on the reading Quiz Brief lecture Paper Helicopter Experiment Robust System Design 16.881

Case study An automatic document handler(adh)was developed at the ss level. When integrated into the total system there were many new problems. The TQM Problem Solving Process was used, and many problems were solved. However. at the field readiness Test (frt) before entering production the reliability was 15X worse than acceptable O Don Clausing 1998

Background SDM split-summer format M Heavily front-loaded Systems perspective Concern with scaling Product development track, CIPD Place in wider context of product realization Joint 16(Aero/Astro)and 2(Mech E) Robust system design

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