Self-zero-adjustment of probes in the methods constructing software datum for large profile measurement

G. A.O. Wei, Ichiro Ogura, Eiki Okuyama, Satoshi Kiyono

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


This paper presents a new technique to estimate zero-adjustment errors of multiple probes which are used to construct software datum for large profile measurements. Three kinds of software datum are considered, which are the 3-point method, the differential laser autocollimation (DLA) method and the mixed method, respectively. The proposed new technique can estimate the zero-adjustment error by using only the data of profile measurement of the workpiece. Therefore it does not require any reference surface or any reversal measurement process. This paper discusses the accuracy and the reliability of the proposed technique in the profile measurement of a large mirror with a length of about 1 m through theoretical analyses and computer simulations. An experimental system of profile measurement using the DLA method was also constructed.

Original languageEnglish
Pages (from-to)337-342
Number of pages6
JournalInternational Journal of the Japan Society for Precision Engineering
Issue number4
Publication statusPublished - 1996


  • Accuracy
  • Large profile
  • Machine tool
  • Measurement
  • Multiple probes
  • Sensor
  • Software datum
  • Stability
  • Zero-adjustment


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