Title

Diagnosis Of Multiple Error Sources Under Variation Equivalence

Keywords

Error equivalence; Manufacturing process; Root cause diagnosis; Variation equivalence

Abstract

Variation equivalence concerns the mechanism by which multiple types of error sources (e.g., the fixture error, machine tool error and datum error) result in identical variation patterns on part features. This phenomenon poses challenges in distinguishing the effects from multiple variation sources and thereby diagnoses the root cause. This paper improves the root cause diagnosis taking into account the variation equivalence phenomenon. Variation equivalence model is established to study the equivalent properties among different variation sources. Through exploring a number of possible equivalent variations scenarios, an equivalent variation patterns library is created for an improved interpretation of fault patterns by considering variation equivalence among multiple error sources. Combined with the library, this paper proposes an excitation-response path method to distinguish multiple error sources under variation equivalence. A case study verifies the diagnostic approach.

Publication Date

11-16-2010

Publication Title

Transactions of the North American Manufacturing Research Institution of SME

Volume

38

Number of Pages

395-401

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

78149374292 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/78149374292

This document is currently not available here.

Share

COinS