Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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Force Synchronizing Control for AC Servomotor-Ball Screw Driven Injection Unit

AC서보모터-볼스크루 구동 사출장치의 힘 동기제어

  • Cho, S.H. (Department of Mechanical and System Design Engineering, Hongik University)
  • Received : 2015.04.20
  • Accepted : 2015.05.28
  • Published : 2015.06.01
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Abstract

This paper focuses on the issue of force synchronizing control for the injection servomechanism of injection molding machines. Prior to the controller design, a virtual design model was developed for the injection mechanism with an AC servomotor-ball screw. A synchronizing controller is designed and combined with the PID control to accommodate the mismatches between the real plant and the linear model plant used. Due to the plant uncertainty, the stiffness and the damping of the mechanism were considered. From the tracking control simulations based on the virtual design model, it is shown that a significant reduction in force synchronizing error is achieved through the use of a proposed control scheme.

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References

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