Quality Engineering Using Robust Design
Quality Engineering Using Robust Design
A lifecycle approach to design validation is it necessary? Is it feasible?
ITC '98 Proceedings of the 1998 IEEE International Test Conference
System Design Verification Tests - An Overview
ITC '99 Proceedings of the 1999 IEEE International Test Conference
System Design Verification Tests - An Overview
ITC '99 Proceedings of the 1999 IEEE International Test Conference
The Evolution of a System Test Process
ITC '99 Proceedings of the 1999 IEEE International Test Conference
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With the ever growing complexity and interaction ofthe vehicle functionalities, a reliable functional testmethodology has become a major concern.In 1995,recognizing the need to develop a quality functionaltest process, Ford Motor Company started aconcentrated effort to define for itself and itssuppliers an effective test strategy for functionalityverification, for which the Robust Test Method(RTM) presented in this paper is an importantcomponent.The strategy was successfully applied inFord, in an environment that is extremely cost-conscious,demands high quality and fast testturnaround time.RTM was born out of the need of Japanese industryto establish its competitive capability after theSecond World War by providing high qualityproducts. Genichi Taguchi, through his research inthe 1950s and early 1960s, developed and validatedthe Design for Experiments techniques that useorthogonal arrays [4]. Madhav Phadke was one ofthose who recognized the applicability of theorthogonal arrays to software test, and defined themethodology while working for AT&T in the 1980s.He also brought the methodology to Ford MotorCompany. The introduction of robust testmethods into the test process translated into aquantum jump in the test quality, allowing thedetection of previously undetected faults. Thistype of testing applied to subsystem level designverification yielded more errors detected than themodule and system tests combined, whilereducing the test turnaround time by 30%.