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Mathematical Problems in Engineering
Volume 2015, Article ID 391654, 9 pages
Research Article

Design and Test of Fuzzy-PI Controller for Copper Disc Casting Machine Casting Electronic Balance

1School of Mechanical & Automotive Engineering, Liaocheng University, Shandong, Liaocheng 252059, China
2Yanggu Xiangguang Copper Co., Ltd. Shandong, Liaocheng 252327, China

Received 10 August 2014; Revised 13 January 2015; Accepted 14 January 2015

Academic Editor: Massimo Scalia

Copyright © 2015 Fanzhi Kong et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Casting electronic scale is the key part of copper casting machine; its control precision directly affects the quality of casting. For this problem, this paper analyzes 16 casting machine casting structures and control principles. According to the movement characteristics of casting, a cast Fuzzy-PI composite controller of electronic scale was designed. On this basis, the hardware system based on PLC and the expansion modules were developed, and casting electronic control programs were designed. Moreover, the control system was simulated by Matlab software and the field experiments have also been carried out. Experiments showed that the casting precision reached 99%, when weight errors are in 3 kg. The designed casting electronic scale satisfies the needs for production.