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World Journal of Engineering Research and Technology

( An ISO 9001:2015 Certified International Journal )

An International Peer Reviewed Journal for Engineering Research and Technology

An Official Publication of Society for Advance Healthcare Research (Reg. No. : 01/01/01/31674/16)

ISSN 2454-695X

Impact Factor : 7.029

ICV : 79.45

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Abstract

THERMOPLASTICS INJECTION MOLDING MACHINE CONTROL, PART I: MOLD TEMPERATURE CONTROL USING I-PD COMPENSATOR, PD-PI AND 2DOF-2 CONTROLLERS COMPARED WITH A PID CONTROLLER

Prof. Dr. Galal Ali Hassaan*

ABSTRACT

The control of mold temperature in injection molding machines is essential to maintain production of molded plastic parts with good quality and minimum defects. The paper presents the control of mold temperature using a compensator from the second generation of control compensators (I-PD) and two controllers from the second generation of PID controllers (PD-PI and 2DOF-2). A proper tuning technique is selected to tune the compensator/controllers using an ITAE performance index. The step time response of the control system using the three proposed compensator/controllers is presented and compared with using a PID controller to control the same mold temperature andthe time-based characteristics are compared. The comparison reveals the best compensator/controller among the four compensator/controllers depending on a graphical and quantitative comparison study.

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