Modeling a Galvoscanner with an Optimized Scanning Function
The paper presents the modeling of a galvanometer-based scanning device with an increased duty cycle, i.e. a high efficiency of using the available time for the scanning process. From the basic dynamic equations of the oscillating element, the active torque and the command function that have to be used are derived. An analytical study is performed on the possible profiles of the scanning function, and an optimum solution is demonstrated, in order to obtain an as small as possible inertia torque and an as high as possible duty cycle. The active torque and the command functions are deduced for this optimum scanning law. A MathCAD study of the command function with regard to the desired scanning (oscillating) frequency completes the modeling process.
KeywordsGalvanometer scanners Modelling Oscillating elements
The research is supported by the Romanian Education and Research Ministry Grant, PN II Ideas Grant, CNCSIS/NURC (National University Research Council) code 1896/2008.
- 2.Bass, M.: Handbook of Optics. McGraw-Hill, New York (1995)Google Scholar
- 3.Beiser, L.: Design equations for a polygon laser scanner. Proc. SPIE 1454, 60–66 (1991)Google Scholar
- 6.Duma, V.F.: Scanning. Politehnica, Timisoara (2004)Google Scholar
- 8.Duma, V.F.: Novel approaches in the designing of the polygon scanners. Proc. SPIE 6785, 6785–1Q (2006)Google Scholar
- 9.Duma, V.F., Podoleanu, A.Gh.: Theoretical approach on a galvanometric scanner with an enhanced duty cycle. Proc. SPIE 7139, 71390D (2008)Google Scholar
- 16.Perju, D.: Mechanisms for fine mechanics (in Romanian). Politehnica, Timisoara (1991)Google Scholar
- 19.Richter, B.: Laser scan devices for industrial application. WIRE 42(6) (1992)Google Scholar