Injection Velocity Control in Injection Molding by Iterative Learning Control with Zero-phase Filtering

LI Chuang; WANG Fu-li; DONG Zhao-ran; CHEN Juan

Volume 38 Issue 3

Jun. 2009

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INFORMATION AND CONTROL > 2009 > 38(3): 293-296.

LI Chuang, WANG Fu-li, DONG Zhao-ran, CHEN Juan. Injection Velocity Control in Injection Molding by Iterative Learning Control with Zero-phase Filtering[J]. INFORMATION AND CONTROL, 2009, 38(3): 293-296.

Citation:

Injection Velocity Control in Injection Molding by Iterative Learning Control with Zero-phase Filtering

1.
Key Laboratory of Process Industry Automation of MOE, Northeastern University, Shenyang 110004, China
2.
SIASUN Robot and Automation Co.Ltd..Shenyang 110168, China

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Received Date: July 27, 2008
Published Date: June 19, 2009

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Abstract

Abstract

A feedforward and feedback control method based on iterative learning control(ILC) with zero-phase filtering is designed for injection velocity control.In this control method,ILC is used as the feedforward part to realize accurate trajectory tracking with information of the previous cycle,and proportional control is used as the feedback part to avoid disturbances appearing in the current cycle.In order to overcome bad learning transients in ILC,the convergence condition in frequency domain is derived,and then the implementation method for monotonic decreasing learning transients is described with zero-phase filtering.The experiments prove that the proposed method provides the ILC with a monotonic decreasing learning transient curve and meets the actual needs of injection velocity control.
- injection velocity,
- iterative learning control(ILC),
- zero-phase filtering,
- feedforward and feedback control

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References (11)

References

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