Publication Details:
Լույս է տեսնում 1966 թվականից՝ տարին 4 անգամ։
Journal or Publication Title:
ՀՀ ԳԱԱ Տեղեկագիր: Մեխանիկա =Известия НАН РА “Механика”=Proceedings of NAS RA: Mechanics
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Creator:
Sh. Kh. Arakelyan ; As. Zh. Khurshudyan
Subject:
Mechanics of deformable solids ; Numerical methods
Uncontrolled Keywords:
метод Бубнова–Галёркина ; подвижное управление ; нелинейная проблема моментов ; распределённая система ; скользящие режимы Bubnov–Galerkin procedure ; scanning (mobile) control ; nonlinear moments problem ; distributed system ; sliding modes Բուբնով–Գալյորկինի եղանակը ; շարժական ղեկավարում ; մոմենտների ոչ գծային պրոբլեմ ; բաշխված բնութագրիչներով համակարգ ; սահող ռեժիմներ
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Abstract:
We suggest to apply the Bubnov–Galerkin procedure to solve scanning control problems for systems with distributed parameters. The algorithm is described in details for three-dimensional linear heat equation It allows to reduce the solution of control problem to finite-dimensional nonlinear moments problem. The procedure of derivation of moments problem is illustrated in details on the example of one-dimensional equation of thermal conductivity. The solution of obtained moments problem is found in a particular case. Based on obtained results a computer simulation is done using COMSOL Multiphysics platform in one-dimensional case for a rod. The main dependences of control function against input data of the problem are revealed. The state of the rod for several (constant) values of the source intensity is expressed in terms of graphs and illustrations. Corresponding illustrations are brought in case of control absence (null-power source) for comparison. An effective numerical scheme for solving the obtained system of nonlinear constraints is suggested in the case of extended class of admissible controls. Calculation of control parameters is reduced to the simplest problem of nonlinear programming.
Place of publishing:
Երևան
Publisher:
National Academy of Sciences of Armenia