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3D-Surface-Model for Injection Speed Process

Ma’moun A. Abu-Ayyad.


Injection  velocity control in plastic injection molding is challenging as this process is inherently nonlinear, requiring an adaptive control strategy for good  tracking of complex  velocity trajectories. In this paper, a surface based model approach is developed tracking complex trajectories of injection velocity.  This technique employs a 3-dimensional (3D) nonlinear surface model of the controlled variable  (injection  velocity) in the overall control architecture to calculate the manipulated variable or control action to a hydraulic servovalve. The strategy uses the  controlled and manipulated variables as inputs to the  3D surface to update the nonlinear plant and controller parameters while the closed-loop control is executed, thereby  handling the  nonlinear characteristics of the plant being controlled.

Full Paper in PDF Document


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