Procedure of System Control Using Distributed Parameters through Discrete Finitisation

Şerban, Sever; Şerban, Doina Corina

doi:10.4028/www.scientific.net/AMM.657.864

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Home Applied Mechanics and Materials Engineering Solutions and Technologies in...Procedure of System Control Using Distributed...

Procedure of System Control Using Distributed Parameters through Discrete Finitisation

Abstract:

This paper presents an original method for the synthesis command involving a controllability matrix, which is used for systems with distributed parameters, and further more for systems reduced to a finite dimensional space.

Info:

Periodical:

Applied Mechanics and Materials (Volume 657)

Main Theme:

Engineering Solutions and Technologies in Manufacturing

Edited by:

Laurentiu Slătineanu, Vasile Merticaru, Gheorghe Nagîţ, Margareta Coteaţă, Eugen Axinte, Petru Duşa, Gavril Muscă, Laurenţiu Ghenghea, Florin Negoescu, Octavian Lupescu, Irina Tiţa and Oana Dodun

Pages:

864-868

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.657.864

Citation:

S. Şerban and D. C. Şerban, "Procedure of System Control Using Distributed Parameters through Discrete Finitisation", Applied Mechanics and Materials, Vol. 657, pp. 864-868, 2014

Online since:

October 2014

Authors:

Sever Şerban *, Doina Corina Şerban

Keywords:

Command Synthesis, Controllability, Discrete Time Equivalent System, Distributed Parameter Process, Infinite Dimensional System, Time Response, Time-Space Discretization

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References

[1] S. Şerban, I.C. Corâci, Continuous and Discrete Control Systems Synthesis, An unifield approach, In the proceedings of the 5th International Conference on Control and Computer Science, Bucharest, 8-11, June, 1983, pp.157-162.

[2] S. Şerban, Automatic systems control (in Romanian), Pim Publishing House, Iaşi, (2012).

[3] S. Şerban, Linear dynamic systems (in Romanian), Printech Publishing House, Bucharest, (2008).

[4] G.I. Marciuk, V.V. Şaidunov, Increasing accuracy in the methods with difference methods (in Romanian), Romanian Academy Publishing House, Bucharest, (1981).

[5] V.S. Vladimirov, Mathematical equations of physics (in Romanian), Scientific and Encyclopedic, Bucharest, (1980).

[6] G.I. Marciuk, Analysis of numerical methods (in Romanian), Romanian Academy Publishing House, Bucharest, (1983).

[7] S. Godounov, Numerical solution for multidimensional problems of gases dynamic (in French), Mir Publishing House, Moskow, (1979).

Paper TitlePages

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Abstract: has commissioned the Crystal Growth Laboratory in the framework of the Materials Science Laboratory (MSL) User Support Program to develop the MSL furnace inserts and samplecartridge assemblies Thermal Modeling Tool (TMT). The TMT assists the definition, preparation and analysis of the experiments onboard the International Space Station (ISS). The tool is based on the CrysVUn software, which was especially designed for global simulation of heat and mass transport processes during crystal growth and alloy solidification in high tem perature furnaces with complex (axi-symmetric) geometries. The main features of CrysVUn are briefly presented in this paper. The preliminary thermal model of the Low Gradient Furnace is illustrated and the model optimization strategy using genetic algorithms is briefly explained. Initial correlation results show that good agreement between simulated and measured axial temperature distributions is obtained. Direct modeling of the radiative heat transfer through the heater Multi-Layer Insulation (MLI) using view factors appears to be necessary for an accurate predict on of the resulting heater power. An example for the application of the TMT is presented.

151

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Authors: Yan Wang, Cheng Lin Liu, Bin Lu, Meng Xia Pei

Abstract: This paper introduces design and implementation of a kind of stepping type heating furnace automatic control system. In this system, the instrument collects variables of all kinds of process, and then put into PLC, PLC drives corresponding actuator respectively according to the setting control mode and control target value. The requirements of this design are that the control system can control temperature accurately in high temperature environment, in order to realize the furnace temperature uniformity and achieve the requirements of higher-level processing as well as improve the system stability and save energy.

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Authors: Rong Lian Chen, Le Xiao, Rong Hao Zheng

Abstract: A new continuous diffusion furnace is introduced in this paper and its workflow is briefly discussed. Within the analysis and statement about the diffusion principle, both junction depth and sheet resistivity are studied. Numerical analysis has been performed to simulate the temperature distribution in the furnace, with FLUENT software. Finally the values of sheet resistivity are calculated according to both temperature field models of continuous and traditional diffusion furnace respectively. Therefore, the new continuous diffusion furnace is proved to be feasible by the comparison of these values.

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