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Automation of manufacturing products from intelligent polymeric composites with regard to the components relative velocity

Journal: Reporter of the Priazovskyi State Technical University. Section: Technical sciences (Vol.34, No. 1)

Publication Date:

Authors : ;

Page : 155-162

Keywords : automation; molding; intelligent sensor; vector control; induction electric drive;

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A device design has been developed that makes it possible to insert intelligent sensors (IS) into the products from composite polymeric materials to control their stress-strain state. The results of the experiments made it possible to improve the algorithm of coordinated work of the vector controlled induction electric drive of the device elements. The simulation results of the transient processes of the operating conditions of the IS automatic insertions into the predetermined spatial coordinates of the extruder channel polymer have been shown. The presence of such sensors within the given spatial coordinates of a product is realized due to rapid movement of molten polymer with included IS under use of the scheme of influx fitting to the polymer that moves in the main channel of the extruder. Based on the simulation results a dependence function for the immersion depth of the polymer melt with included IS from its movement velocity has been obtained. The approximation of this dependence via a polynomial function of 5-th order made it possible to determine with the relative error less than 1% analytically the linear velocity of the rod in the cylinder injector for transporting of the molten polymer with included IS to the predetermined spatial coordinates of the polymer channel of the extruder. For inserting of the intelligent sensors (IS) into the depth of 1.2 mm a required motor speed of electric drive was calculated under considering of the peculiarities of the chosen kinematic scheme. The obtained experimental data have confirmed the possibility of technical implementation of the developed device as well as allowed refining of the algorithm for the automation system. The simulation results for the system have been presented. The system used the vector-controlled asynchronous electric drives with standard settings for their contours to provide the agreed movement of the plasticiser screw and the injector rod by inserting of IS at a given depth with a given step

Last modified: 2018-04-11 20:38:05