The solving methods of dwell time or pressure in CCOS for optical complex surfaces

H. Cheng, Suet To, Y. Wang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


Error correction of optical complex surfaces in computer-controlled optical surfacing (CCOS) is primary important. This paper discusses some methods, i.e. Fourier transform method, Wiener filtering method, directive method and iterative method, for calculating dwell time or relative pressure in the CCOS for error-correcting, which are enlightened from the digital image processing techniques. However, these error correction methods are different from the image processing because they are not a subject of solving the causal signal but a problem of an iterative process. The simulation results show that the Wiener filtering method is good and reliable when the correlative parameters in the fabrication are kept consistent.
Original languageEnglish
Title of host publicationAdvances in Materials Manufacturing Science and Technology II - Selected Papers from the 12th International Manufacturing Conference in China
Number of pages4
Publication statusPublished - 1 Dec 2006
Event12th International Manufacturing Conference in China, IMCC2006 - Xi'an, China
Duration: 21 Sept 200623 Sept 2006

Publication series

NameMaterials Science Forum
ISSN (Print)0255-5476


Conference12th International Manufacturing Conference in China, IMCC2006


  • Computer-controlled optical surfacing
  • Dwell time
  • Freeform
  • Wiener filtering

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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