Improvement of the measuring accuracy of measuring scanner by isolation of circumstantial factors

Abstract

Measuring accuracy of a measuring scanner is important, there are several factors that affect the measuring accuracy, such as vibration, temperature fluctuation, material of the scanner and electrical insulation.

In this thesis, vibration and the temperature fluctuation of the machine are studied, and corresponding components are selected to eliminate the effects. Vibration can be generated from the ground and from direct connect as well, the vibration is measured by using vibrometer. And the collected data is charted by using excel sheet, then suitable vibration pads can be selected based on the analysis of the collected data. As for the temperature fluctuation, the structure is made by aluminum, there will be contraction and expansion of the structure changes when the temperature fluctuates in Finland. Theory calculation by hand calculation and FE analysis are carried, then suitable climate control system is selected. Furthermore, suitable insulation is selected.