Open AccessRELIABILITY ESTIMATION OF MATHEMATICAL DESCRIPTION OF MAIN GAS PIPELINE TOUGH LINE WITH 3RD DEGREE SPLINE
Author(s) -
Stanislav Lazarev,
С. А. Пульников,
Yu. S. Sysoev,
Natalia V. Kazakova
Publication year - 2016
Publication title -
izvestiâ vysših učebnyh zavedenij. neftʹ i gaz
Language(s) - English
Resource type - Journals
ISSN - 0445-0108
DOI - 10.31660/0445-0108-2016-6-81-88
Subject(s) - position (finance) , pipeline (software) , reliability (semiconductor) , degree (music) , spline (mechanical) , mathematics , line (geometry) , radius , function (biology) , mathematical analysis , geometry , computer science , engineering , physics , structural engineering , power (physics) , quantum mechanics , acoustics , programming language , computer security , finance , evolutionary biology , economics , biology
A method for the mathematical description of gas pipeline curve position, which is identified with the upper line, describing for radius vector with coordinates approximated with a cubic spline. To confirm the authenticity of given dependencies is satisfied with the decision of the check tasks assessment in calculating the position of sinfulness and the upper forming parameter estimates change of the pipeline spatial position. Applying a method based on a comparison the changes of space-time curves previously known function, built by the coordinates of points, defined in two ways: a true and with given inaccuracy