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Worst-Case Product Performance Verification With Electromagnetic Interference Test Applications Disclosure Number: IPCOM000034390D
Original Publication Date: 1989-Feb-01
Included in the Prior Art Database: 2005-Jan-27

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Breyfogle, FW Davis, JH [+details]


A method to determine electromagnetic interference (EMI) product test configuration and test sample size is described. An 80%/80% statistic for machines built to a "determined worst case expected" (DWCE) configuration is proposed. The general strategy is to first use a modified factorial experiment technique to find a DWCE configuration. Next several samples of this DWCE configuration are tested for 80%/80% compliance. A highly saturated factorial design matrix can be defined utilizing the Hadamard matrix. The factorial trial responses are then analyzed to ascertain a DWCE configuration. Seven machines are then tested at this configuration.