Article information

2014 , Volume 19, ¹ 6, p.3-18

Banshchikov A.V., Burlakova L.A., Irtegov V.D., Titorenko T.N.

Symbolic computation in modelling and qualitative analysis of dynamic systems

Purpose. We propose a technology for investigation of dynamics and stability for motion of mechanical systems and electrical circuits in a symbolic form. The software packages that support the proposed technology are described. Design/methodology/approach. The algorithms implemented in the packages are based on classical methods of analytical mechanics, stability theory of motion and methods representing their further development. Findings. Algorithms for modelling and qualitative analysis of mechanical systems, linear and nonlinear electrical circuits have been described. These algorithms were implemented using computer algebra system Mathematica and presented in the form of its add-on packages. The developed software allows constructing of the characteristic function for the above systems on the base of their geometric description. The function can be used both for deriving equations of motion (state equations of circuit) and for qualitative analysis of stationary solutions (invariant manifolds) of these equations. Functional abilities of the packages have been demonstrated by the specific examples. Research limitations/implications. Software packages are applied for solution of the problems mentioned above entirely in a symbolical form. Such technique is efficient enough for construction of mathematical models (differential equations) and for their qualitative analysis, in particular, for parametric analysis. Originality/value. Using the developed software, new results have been obtained in investigation of the following problems: dynamics of artificial satellites, motion of a rigid body in an ideal fluid, Euler’s equations on Lie algebras, electrical nonlinear circuits and some others. Packages continue to through the expansion of the algorithmic framework.

[full text]
Keywords: Modelling, qualitative analysis, mechanical system, electrical circuit, computer algebra system, complex of programs

Author(s):
Banshchikov Andrei Valentinovich
PhD. , Associate Professor
Position: Senior Research Scientist
Office: Institute for System Dynamics and Control Theory of SB RAS
Address: 664033, Russia, Irkutsk, Lermontov str., 134
Phone Office: (3952) 45-30-56
E-mail: bav@icc.ru

Burlakova Larisa Aleksandrovna
PhD. , Associate Professor
Position: Senior Research Scientist
Office: Institute for System Dynamics and Control Theory of SB RAS
Address: 664033, Russia, Irkutsk, Lermontov str., 134
Phone Office: (3952) 42-78-80
E-mail: burlakova.larisa@gmail.com

Irtegov Valentin Dmitrievich
Dr. , Associate Professor
Position: Senior Research Scientist
Office: Institute for System Dynamics and Control Theory of SB RAS
Address: 664033, Russia, Irkutsk, Lermontov str., 134
Phone Office: (3952) 42-78-80
E-mail: irteg@icc.ru

Titorenko Tatiana Nikolaevna
PhD.
Position: Senior Research Scientist
Office: Institute for System Dynamics and Control Theory of SB RAS
Address: 664033, Russia, Irkutsk, Lermontov str., 134
Phone Office: (3952) 35-70-30
E-mail: titor@icc.ru

References:
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Bibliography link:
Banshchikov A.V., Burlakova L.A., Irtegov V.D., Titorenko T.N. Symbolic computation in modelling and qualitative analysis of dynamic systems // Computational technologies. 2014. V. 19. ¹ 6. P. 3-18
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