VNII Galurgy Stock Co., St. Petersburg, Russia:

V. A. Matveev, Divisional Manager, Candidate of Engineering Sciences, matveev@galurgy.sp.ru

The paper gives analysis of a trend in development of systems for production facilities control. It has been shown that present-day approach to the strategy of control is a comprehensive one enabling to carry out the functions of control with regard to business-processes, resources, financial and material flows, as well as to control product manufacturing processes. The concept of control for potash flotation plant is being considered at the junction of MES-system and Automated Systems for Control of Production Processes (ASUTP) and is devoted to operative management of processing in the form of operative planning of the manufactured product volume given technological possibilities and distribution of load by process sections (areas). Process technology capabilities of a plant have been stipulated by the following principal factors: standard (rated) load on the equipment (optimum operation mode), rated (regulatory) coefficient for admissible fluctuations in the equipment operation — Kn, as well as coefficient of variation for KCl mass fraction in the ore — Kv. Design (calculation) framework limitations have been set for changes in the planned volume of a product output, according to the interrelationship of Kn and Kv coefficients (4 possible options). It has been shown that control by the criterion of stabilizing the ore load is more preferable compared with automatic load control (regulation) by the parameter of KCl mass fraction in the ore. The conditions for optimum distribution of loads by sections have been determined. It has been suggested to use simulation modeling, as an addition to the design calculation method, in order to solve the problem.

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