Auto-Regressive Time Series Modeling of Stochastic Surfaces


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Roughness profiles of EDM surfaces were obtained from a perthometer and digitized through AUTO CAD. Fortran program was developed for fitting ARMA (n, n-1) models. A significant observation was that for the sinking electrode type. EDM generally AR (1) or AR (2) models were adequate but for wire cut EDM higher order models, generally ARMA (3,2) and ARMA (4,3) were required. The higher order models indicate additional factors like wire vibration influencing the dynamics of wire EDM process.

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Journal: TechConnect Briefs
Volume: Technical Proceedings of the 2000 International Conference on Modeling and Simulation of Microsystems
Published: March 27, 2000
Pages: 241 - 244
Industry sector: Sensors, MEMS, Electronics
Topic: Modeling & Simulation of Microsystems
ISBN: 0-9666135-7-0