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Adjusted least squares approach for diagnosis of ill-conditioned compliant assemblies
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Rong, Q., Shi, J. and Ceglarek, D.. (2001) Adjusted least squares approach for diagnosis of ill-conditioned compliant assemblies. Journal of Manufacturing Science and Engineering, Vol.123 (No.3). pp. 453-461. ISSN 1087-1357
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Official URL: http://dx.doi.org/10.1115/1.1365116
Abstract
Least squares (LS) estimation has been extensively used for parameter identification and model-based diagnosis. However, if ill-conditioning is present, the LS estimation approach tends to generate imprecise results and thus impacts the diagnostic performance. In this paper, an adjusted least squares approach is proposed to deal with the illconditioning problem in the diagnosis of compliant sheet metal assembly process. The adjusted LS approach is able to overcome the ill-conditioning and give precise results for certain linear combinations of the faults. Simulations and industrial case study are conducted to compare the diagnostic performance of the adjusted and regular LS approach. In addition, a two-stage assembly model is developed for further fault isolation with inclusion of additional measurement information.
| Item Type: | Journal Article |
|---|---|
| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) |
| Journal or Publication Title: | Journal of Manufacturing Science and Engineering |
| Publisher: | A S M E International |
| ISSN: | 1087-1357 |
| Date: | 2001 |
| Volume: | Vol.123 |
| Number: | No.3 |
| Page Range: | pp. 453-461 |
| Identification Number: | 10.1115/1.1365116 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| URI: | http://wrap.warwick.ac.uk/id/eprint/51716 |
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