A Dynamic Model for Condition Monitoring of a High-Power CO2 Industrial Laser

[+] Author and Article Information
J. F. Tu

School of Industrial Engineering, Purdue University, West Lafayette, IN 47907-1287

J. G. Katter

Manufacturing and Logistics Technology, Caterpillar Inc.

L. E. Monacelli, M. Gartner

ATEO, Ford Motor Company, Box-16, 36200 Plymouth Rd., Livonia, MI 48150

J. Dyn. Sys., Meas., Control 121(2), 157-164 (Jun 01, 1999) (8 pages) doi:10.1115/1.2802448 History: Received September 08, 1997; Online December 03, 2007


Industrial laser systems handle high power consumptions and may function under undesirable operating conditions if the systems are not properly maintained. It is sometimes difficult to diagnose why a laser is not functioning properly because the optical output is the result of complex interactions among many parameters such as the total gas pressure, effectiveness of the laser cooling system, operating environment, and gradual deterioration of laser components. In this paper, a dynamic power distribution model is developed to characterize the power distribution of a high-power transverse-flow DC-excited CO2 laser to account for dynamic effects such as continuously ramping up and down the laser output power and the cyclic nature of the chiller. The model contains the essential dynamic features of a CO2 laser system and yields solutions sufficiently accurate for practical diagnostic purposes.

Copyright © 1999 by The American Society of Mechanical Engineers
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