An Experimental Study on Modeling Precision for Position Control in 3D Printer

Abstract

In recent years, 3D printers can be purchased at relatively low prices, are used in various fields, and have been introduced in elementary and junior high schools. However, the 3D printers introduced at school sites are often of the Fused Deposition Modeling(FDM) type, which is made by melting resin. In addition, many expensive stereolithography type 3D printers for industrial use are equipped with sensors on the motors that move each table to perform feedback control. Furthermore, since FDM is targeted at individuals, position control is performed by predicting feedforward control without attaching sensors to reduce costs. However, if the origin position moves due to mechanical trouble, etc., there is a problem that the correction cannot be made and an error occurs. Such cases are not desirable at school sites, so improvement of accuracy with current equipment. In this letter, it aims at verification of modeling accuracy.