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JACIII Vol.21 No.1 pp. 166-171
doi: 10.20965/jaciii.2017.p0166
(2017)

Paper:

Researches on Temperature Control Strategy of SMHS-Type 3D Printing Based on Variable Universe Fuzzy Control

Tao Wu, Yiru Tang, Dongdong Fei, Yongbo Li, and Wangyong He

School of Automation, China University of Geosciences
Wuhan 430074, China

Received:
July 8, 2016
Accepted:
October 26, 2016
Published:
January 20, 2017
Keywords:
temperature control on 3D printing, fuzzy control, variable universe, constant energy printing
Abstract

Selective micro heat sintering (SMHS)-type 3D printing technology is a widely applied method in rapid prototyping, which uses an electric heating component to sinter non-metallic powder. It requires precise control of the heating component’s energy and its sintering time. Temperature is one of the key factors that affect the forming quality of fused-type 3D printing technology. Aiming at the nonlinear and time-delay characteristics of temperature control in fused-type 3D printing, a fuzzy control method based on variable universe fuzzy control was studied. This fuzzy control method adopts a set of nonlinear expansion-contraction factors to make the variable universes change with the adaptive error, which can help acquire adaptive temperature adjustment in the rapid prototyping process control. The results of the simulation and experiment showed that the controlled temperature response was faster, the overshoot was smaller, and the stability was better compared to the conventional fuzzy proportion integration differentiation (PID) algorithm after the temperature reached the target temperature. The printed results indicated that the universe fuzzy PID control can effectively improve the accuracy of the workpiece shapes and that the density distribution of the workpiece is increased, which can help improve the forming quality.

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Last updated on Dec. 15, 2017