Advantages of digital servo amplifiers for control of a galvanometer based optical scanning system

D. A. Sabo; D. Brunner; A. Engelmayer

doi:10.1117/12.625310

1 August 2005 Advantages of digital servo amplifiers for control of a galvanometer based optical scanning system

D. A. Sabo, D. Brunner, A. Engelmayer

Proceedings Volume 5873, Optical Scanning 2005; (2005) https://doi.org/10.1117/12.625310
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Long-standing industry demand for "extended status messages" from galvanometer-based scan heads and ever-increasing dynamical requirements in industrial laser materials processing, e.g. due to advancing laser sources, have lead to the development of digital servo controls for galvanometers. The advanced control algorithms of a digitally controlled scan system lead to highly improved dynamics compared to an analog type where only a very limited number of parameters are used to tune the system to a certain dynamical requirement. Additionally, the abundant data acquired during control with a digital scan system are available for further processing. This paper discusses advantages of having such real-time feedback in laser-based materials processing applications and how e.g. process parameters like scan-speed and velocity can be used for quality control, applications development, or advanced laser control.

Citation Download Citation

D. A. Sabo, D. Brunner, and A. Engelmayer "Advantages of digital servo amplifiers for control of a galvanometer based optical scanning system", Proc. SPIE 5873, Optical Scanning 2005, (1 August 2005); https://doi.org/10.1117/12.625310

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