ISSN 1817-2172, рег. Эл. № ФС77-39410, ВАК

Differential Equations and Control Processes
(Differencialnie Uravnenia i Protsesy Upravlenia)

Optimal Boundary Control of Oscillation Process by Displacement at Two Ends of a Rod Consisting of Two Sections of Different Density and Elasticity

Author(s):

V. R. Barseghyan

Institute of Mechanics of National Academy of Sciences of RA
Yerevan State University

barseghyan@sci.am

Abstract:

We consider the problem of optimal boundary control for a one-dimensional wave equation, describing the longitudinal oscillations of a heterogeneous rod consisting of two heterogeneous sections or transverse vibrations of a heterogeneous string with given initial and final conditions. In this case, it is assumed that the time of propagation of the wave along each of the sections is the same. The control is carried out by displacement at the two ends. The quality criterion is given over the entire time period. A constructive approach is proposed for constructing an optimal boundary control, which is carried out according to the following scheme. The problem is reduced to the problem of control of distributed actions with zero boundary conditions, then the method of separation of variables and the methods of the theory of optimal control of finite-dimensional systems are used. The obtained results are illustrated by a specific example.

Keywords

References:

  1. Butkovskii, A. G. Metody upravleniya sistemami s raspredelennymi parametrami [Control Methods for Systems with Distributed Parameters]. M. : Nauka, 1975 (in Russ. )
  2. Barseghyan. V. R. The Control Problem for Stepwise Changing Linear Systems of Loaded Differential Equations with Unseparated Multipoint Intermediate Conditions // Mechanics of Solids. 2018. Vol. 53. № 6, P. 615-622. https: doi. org/10. 3103/S0025654418060031
  3. Barsegyan, V. R. The problem of optimal control of string vibrations // International Applied Mechanics. 2020. Vol. 56. № 4, P. 471-48. DOI: 10. 1007/s10778-020-01030-w
  4. Barsegyan, V. R. Optimal Control of String Vibrations with Nonseparate State Function Conditions at Given Intermediate Instants // Automation and Remote Control. 2020. Vol 81, № 2. P. 226-235. DOI: 10. 31857/S0005231020020038
  5. Barseghyan, V., Solodusha, S. Optimal Boundary Control of String Vibrations with Given Shape of Deflection at a Certain Moment of Time // Mathematical Optimization Theory and Operations Research. MOTOR 2021. Lecture Notes in Computer Science. Vol 12755. P. 299-313. 2021. https://doi.org/10.1007/978-3-030-77876-7_20
  6. Barseghyan, V. and Solodusha, S. On One Problem in Optimal Boundary Control for String Vibrations with a Given Velocity of Points at an Intermediate Moment of Time // Conference Paper. Publisher: IEEE. 2021 International Russian Automation Conference (RusAutoCon), 2021. P. 343-349. Doi: 10. 1109/RusAutoCon52004. 2021. 9537514
  7. Barseghyan, V. R. On the controllability and observability of linear dynamic systems with variable structure // Proceedings of 2016 International Conference " Stability and Oscillations of Nonlinear Control Systems" (Pyatnitskiy's Conference), STAB 2016. DOI: 10. 1109/STAB. 2016. 7541163
  8. Barseghian, V. R. String vibration observation problem. 1-st International Conference // Control of Oscillations and Chaos Proceedings (Cat. No. 97TH8329), 1997. Vol. 2, pp. 309-310. Doi: 10. 1109/COC. 1997. 631351
  9. Ilʹ in, V. A. Optimizaciya granichnogo upravleniya kolebaniyami sterzhnya, sostoyashchego iz dvuh raznorodnyh uchastkov [Optimization of the boundary control of the vibrations of a rod consisting of two dissimilar parts]. Dokl. Akad. Nauk 2011. 440, № 2, p. 159-163 (in Russ. )
  10. Ilʹ in, V. A. O privedenii v proizvol'no zadanoe sostoyanie kolebanij pervonachal'no pokoyashchegosya sterzhnya, sostoyashchego iz dvuh raznorodnyh uchastkov [On the bringing of the oscillations of an initially quiescent rod consisting of two different parts to an arbitrarily given state] Dokl. Akad. Nauk 2010, 435, № 6, p. 732-735. (in Russ. )
  11. Egorov, A. I., Znamenskaya, L. N. Ob upravlyaemosti uprugih kolebanij posledovatel'no soedinennyh ob" ektov s raspredelennymi parametrami [On the controllability of elastic oscillations of serially connected objects with distributed parameters] Trudy Inst. Mat. i Mekh. UrO RAN. 2011, 17, № 1, p. 85-92 (in Russ. )
  12. Provotorov, V. V. Postroenie granichnyh upravlenij v zadache o gashenii kolebanij sistemy strun [Construction of boundary controls in the problem of oscillation of a system of strings]. Vestnik of Saint Petersburg university. Series 10. Applied Mathematics. Computer Science. Control Processes, 2012, № 1, p. 62-71. (in Russ. )
  13. Amara, J. Ben, Bouzidi, H. Null boundary controllability of a one-dimensional heat equation with an internal point mass and variable coefficients // Journal of Mathematical Physics, 2018. Vol. 59. No. 1, 1-22
  14. Amara, J. Ben, Beldi, E. Boundary controllability of two vibrating strings connected by a point mass with variable coefficients // SIAM J. Control Optim., 2019. Vol. 57, No. 5, pp. 3360-3387. DOI. 10. 1137/16M1100496
  15. Mercier, D., Ré gnier, V. Boundary controllability of a chain of serially connected Euler-Bernoulli beams with interior masses // Collectanea Mathematica. 2009. Vol. 60, No. 3, pp. 307-334. https://doi.org/10.1007/BF03191374
  16. Kuleshov, A. A. Smeshannye zadachi dlya uravneniya prodol'nyh kolebanij neodnorodnogo sterzhnya i uravneniya poperechnyh kolebanij neodnorodnoj struny, sostoyashchih iz dvuh uchastkov raznoj plotnosti i uprugosti [Mixed problems for the equation of the longitudinal vibrations of a nonhomogeneous rod and for the equation of the transverse vibrations of a nonhomogeneous string consisting of two segments with different densities and elasticities]. Dokl. Akad. Nauk. 2012, 442, № 5, p. 594-597. (in Russ. )
  17. Rogozhnikov, A. M. Issledovanie smeshannoj zadachi, opisyvayushchej process kolebanij sterzhnya, sostoyashchego iz neskol'kih uchastkov, pri uslovii sovpadeniya vremeni prohozhdeniya volny po kazhdomu iz etih uchastkov [Investigation of a mixed problem describing the oscillations of a rod consisting of several parts with equal wave travel times]. Dokl. Akad. Nauk. 2011, 441, № 4, p. 449-451. (in Russ. )
  18. Rogozhnikov, A. M. Issledovanie smeshannoj zadachi, opisyvayushchej process kolebanij sterzhnya, sostoyashchego iz neskol'kih uchastkov s proizvol'nymi dlinami [Investigation of a mixed problem describing the oscillations of a rod consisting of several segments with arbitrary lengths]. Dokl. Akad. Nauk . 2012, 444, № 5, p. 488-491. (in Russ. )
  19. Anikonov, D. S., Konovalova, D. S. Pryamaya i obratnaya zadachi dlya volnovogo uravneniya s razryvnymi koefficientami. [Direct and inverse problems for a wave equation with discontinuous coefficients]. St. Petersburg State Polytechnical University Journal. Physics and Mathematics. 2018, 11(2), p. 61-72. (in Russ. )
  20. Zvereva, M. B., Najdyuk, F. O., Zalukaeva Zh. O. Modelirovanie kolebanij singulyarnoj struny [Modeling vibrations of a singular string]. Proceedings of Voronezh State University. Series: Physics. Mathematics. 2014, № 2, p. 111-119. (in Russ. )
  21. Kholodovskii, S. Ye., Chuhrii, P. A. Zadacha o dvizhenii neogranichennoj kusochno-odnorodnoj struny [The Problem of Motion of an Unbounded Piecewise Homogeneous String] Scholarly Notes Of Transbaikal State University. Series Physics, Mathematics, Engineering, Technology. 2018. Vol. 13, № 4, p. 42-50. DOI: 10. 21209/2308- 8761-2018-13-4-42-50. (in Russ. )
  22. Barseghyan, V. R. Upravlenie sostavnyh dinamicheskih sistem i sistem s mnogotochechnymi promezhutochnymi usloviyami. [Control of Compound Dynamic Systems and of Systems with Multipoint Intermediate Conditions]. M. : Nauka, 2016. (in Russ. )
  23. Krasovsky N. N. Teoriya upravleniya dvizheniem [The Theory of Motion Control]. M. : Nauka, 1968. (in Russ. )

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