Control System of an Experimental Intallation for Electrophysical Effects on Grain

Abstract

Currently, the development of effective control systems for technological equipment is still actual problem. This project aims to develop and manufacture a learning control system that can implement control according to specified drying criteria and operating on the basis of changes in the moisture content of the processed material. This article presents the results of the development of a control system for a laboratory setup of electrophysical effects on grain. During this work elements of experimental planning, elements of statistical processing, computer modeling by using applied software for electrodynamic modeling, development of SCADA systems and programming of control equipment were used. The experiments were carried out using certified measuring equipment. The value of the research results lies in determining energy-efficient operating modes of grain processing equipment using a microwave field. The scientific novelty of the research consists in determining the grain wetness by the relative decrease voltage of the electromagnetic field in the layer of processed grain. Main provisions: the application of the developed humidity level control system allows you to determine the wetness content of the grain layer during processing by a microwave field; the implementation of one setup of combined microwave-convective drying of grain with a capacity of 5 tons per hour, operating under the control of the developed system and designed for productivity, allows you to get an income of 5231.2 thousand rubles for eight years of project implementation, while the simple payback period of capital investments will be 3.6 years. Conclusions: the using of the developed system by the experimental installation of microwave effecting on grain makes it possible to implement control according to relevant control criteria, while the average energy consumption of wheat drying from 20 to 14% stands at 3.7 MJ per kg of evaporated moisture; the implementation of the control system for the technological process of electrophysical exposure with further improvement allows for the accumulation of statistical information and the developing of operating modes of equipment according to more complete data.