Time-Pressure Switch Control for Fluid Dispensing Process Based on Self-Adaptive Model

Cong Ping Chen; Tao Zhang; Shi Jie Guo

doi:10.4028/www.scientific.net/AMM.397-400.91

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 397-400Time-Pressure Switch Control for Fluid Dispensing...

Time-Pressure Switch Control for Fluid Dispensing Process Based on Self-Adaptive Model

Abstract:

Because of changes of the epoxy amount in syringe and air compressibility, the time-pressure dispensing has proven to be a challenging task in achieving a high degree of consistency in the dispensed liquid dots volume. Taking residual pressure and non-Newtonian fluid into consideration, a self-adaptive model of the dispensed liquid dots volume was developed for the whole dispensing process. Based on the liquid dots volume model, combined with the syringe air chamber volume prediction model, a time-pressure switch control method was put forward following the principle of time preference control. Numerical simulation has been conducted in the MATLAB using the conventional PI algorithm. Results show that the self-adaptive model can be very well response to the influences of air chamber volume changes to the dispensed liquid dots volume and the proposed control method can significantly improve the dots volume consistency.

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Periodical:

Applied Mechanics and Materials (Volumes 397-400)

Pages:

91-96

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.397-400.91

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Online since:

September 2013

Authors:

Cong Ping Chen, Tao Zhang, Shi Jie Guo

Keywords:

Fluid Dispensing, Residual Pressure, Self-Adaptive Model, Switch Control

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