Title: Optimization control multidimensional prosess of single crystal growth
Abstract: The use of opportunities of systems of non-adaptive control, in particular, modal for high-quality management of linear dynamic objects is considered, and some results of our research in this field are given in the paper. The main objective of the research is to solve the problem of synthesis of stabilization law for a multidimensional control object based on the use of knowledge in the field of management, obtained from various sources, for the technological process of single-crystal growing by the Chokhralsky method on “GROWTH” setups. Current methods and means of ensuring the specified requirements to the management process imply distribution of matrix eigenvalues or transfer matrixes of a closed-loop system in the given points and areas, optimization of transients in the closed-loop system. The methods for stabilization of a condition of multidimensional object using the system, providing the implementation of the specified requirements to the management process on the basis of decomposition of the model of the growth process as a control object, are considered in the paper. The proposed method with the use of graphic representation of the sensitivity function for the analysis allows to obtain important information on high-quality management of the system for the obtained matrix components of this system. The algorithm of choosing the most appropriate matrix components for the model of the particular control object is presented. We propose to use this method for the increase in the accuracy of maintaining thermal conditions of the crystal growth, both in the stationary environment, and at the maximum perturbations of modes, with the purpose of improving the efficiency of management systems by modern growth setups in conditions of producing these single-crystals. The research results can be applied by specialists in the field of robust modal management of material, energetic and informational flows in the systems of management of modern technological processes, introduced into the technical environment of these technological processes
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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