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Adaptive modeling of laser powder deposition process for control and monitoring application

Durali, M ; Sharif University of Technology | 2007

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  1. Type of Document: Article
  2. DOI: 10.1177/1077546307074225
  3. Publisher: 2007
  4. Abstract:
  5. The laser powder deposition (LPD) process is an advanced material processing technique with many applications. Despite this fact, reliable and accurate control schemes have not yet been fully developed for the process. In this paper, identification of the LPD process is examined to find a more accurate model to predict and control the height of clad in real time. The model is adaptive single inputsingle output (SISO) and its structure is very similar to the Hammerstein model when the effective power (a function of laser power and velocity) is selected as the input and the clad height as the output. Weighted extended recursive least square (WERLS) is adopted to simultaneously estimate the model parameters using experimental data. Comparison of the results shows that this method can be used very efficiently in control of laser powder deposition process. © 2007 SAGE Publications
  6. Keywords:
  7. Adaptive control systems ; Deposition ; Least squares approximations ; Real time control ; Adaptive modeling ; ARMAX ; Hammerstein model ; Laser powder deposition (LPD) ; Weighted extended recursive least square (WERLS) ; Computer simulation
  8. Source: JVC/Journal of Vibration and Control ; Volume 13, Issue 5 , 2007 , Pages 461-473 ; 10775463 (ISSN)
  9. URL: https://journals.sagepub.com/doi/abs/10.1177/1077546307074225