Preview

Proceedings of the Institute of Mathematics of the NAS of Belarus

Advanced search

On pointwise controllability of a linear time-invariant singularly perturbed system with delay

https://doi.org/10.67268/1812-5093-2026-34-1s-172-186

EDN: MFZAZM

Abstract

 

Different notions of pointwise controllability are introduced, compared and analyzed for a linear time-invariant singularly perturbed system with state delay. These notions differ in the dependence of the terminal time and control on the small parameter, the boundedness of the control, and the accuracy of hitting prescribed points. A hierarchy of the introduced notions is established. The structure of the pointwise controllability operator is revealed, which justifies the relationship between robust and $\mu$-uniform controllability. Sufficient decomposition conditions for robust controllability, expressed in terms of the controllability matrices of the slow and fast subsystems, are proved. The theoretical results are illustrated by examples.

About the Author

O. B. Tsekhan
Yanka Kupala State University of Grodno
Belarus

Grodno



References

1. Kirillova F. M., Churakova S. V. Relative controllability of linear dynamical systems with delay. Doklady Akademii Nauk SSSR, 1967, vol. 174, no. 6, pp. 1260–1263 (in Russian).

2. Gabasov R., Kirillova F. M. Qualitative Theory of Optimal Processes. Moscow, Nauka Publ., 1971. 507 p. (in Russian).

3. Minyuk S. A. Two controllability problems for a linear system with aftereffect. Vestnik BGU. Seriya 1, 1972, no. 1, pp. 8–11 (in Russian).

4. Marchenko V. M., Moskovska B. P., Simeonova Yu. S. Pointwise controllability of systems with aftereffect. Differentsial’nye Uravneniya, 1978, vol. 14, no. 7, pp. 1324–1327 (in Russian).

5. Marchenko V. M. Modal control in systems with aftereffect. Avtomatika i Telemekhanika, 1988, no. 11, pp. 73–84 (in Russian).

6. Kokotovic P. V., O’Malley R. E., Sannuti P. Singular perturbations and order reduction in control theory – an overview. Automatica, 1976, vol. 12, no. 2, pp. 123–132.

7. Kokotovic´ P. V., Khalil H. K., O’Reilly J. Singular Perturbation Methods in Control: Analysis and Design. Philadelphia, SIAM, 1999. xv, 371 p. (Classics in Applied Mathematics; vol. 25).

8. Dmitriev M. G., Kurina G. A. Singular perturbations in control problems. Avtomatika i Telemekhanika, 2006, no. 1, pp. 3–51 (in Russian).

9. Kalinin A. I. Asymptotic Methods for Optimization of Perturbed Dynamical Systems. Minsk, Ekoperspektiva Publ., 2000, 183 p. (in Russian).

10. Glizer V. Y. Controllability of Singularly Perturbed Linear Time Delay Systems. Cham, Birkha¨user, 2021. XII, 419 p. (Systems & Control: Foundations & Applications).

11. Gaishun I. V., Goryachkin V. V. Robust and interval observability of two-parameter discrete systems with interval coefficients. Vestsi NAN Belarusi. Ser. Fiz.-Mat. Navuk, 2016, no. 2, pp. 6–9 (in Russian).

12. Gaishun I. V. Introduction to the Theory of Linear Nonstationary Systems. Minsk, Institute of Mathematics of the NAS of Belarus Publ., 1999 (in Russian).

13. Astrovskii A. I., Gaishun I. V. Linear Systems with Quasi-Differentiable Coefficients: Controllability and Observability of Motions. Minsk, Belaruskaya Navuka Publ., 2013 (in Russian).

14. Kopeikina T. B., Tsekhan O. B. On controllability of linear nonstationary singularly perturbed systems in the state space. Izvestiya RAN. Tekhnicheskaya Kibernetika, 1993, no. 3, pp. 40–46 (in Russian).

15. Tsekhan O. B. Conditions of pointwise controllability and pointwise observability of linear time-invariant singularly perturbed systems with delay. Trudy Instituta Matematiki, 2021, vol. 29, no. 1–2, pp. 138–148 (in Russian).

16. Tsekhan O. Approximation of the solution based on the decoupling transformation of linear time-varying singularly perturbed system with delay. Dynamic Control and Optimization (DCO 2021). Springer Proceedings in Mathematics & Statistics, 2022, vol. 407, pp. 77–97.

17. Tsekhan O. B. Asymptotic approximation of the solution of a linear nonstationary singularly perturbed system with constant delay. Vesnik GrDU imya Yanki Kupaly. Ser. 2, Matematyka. Fizika. Informatyka, Vylichalnaya Tekhnika i Kirawanne, 2024, vol. 14, no. 1, pp. 37–47 (in Russian).

18. Tsekhan O. B. Asymptotic approximations of solutions of a class of linear nonstationary singularly perturbed control systems with constant delay. Vestnik Udmurtskogo Universiteta. Matematika. Mekhanika. Komp’yuternye Nauki, 2025, vol. 35, no. 4, pp. 578–600 (in Russian).

19. Kopeikina T. B. On controllability of linear singularly perturbed systems with delay. Differentsial’nye Uravneniya, 1989, vol. 25, no. 9, pp. 1508–1518 (in Russian).

20. Tsekhan O. B. Asymptotic approximation of solutions of a class of nonstationary singularly perturbed systems with delay. Analytical Methods of Analysis and Differential Equations (AMADE 2024): Proceedings of the 11th International Scientific Seminar. Minsk, BGU Publ., 2024, pp. 108–114 (in Russian).


Review

For citations:


Tsekhan O.B. On pointwise controllability of a linear time-invariant singularly perturbed system with delay. Proceedings of the Institute of Mathematics of the NAS of Belarus. 2026;34(1s):172-186. (In Russ.) https://doi.org/10.67268/1812-5093-2026-34-1s-172-186. EDN: MFZAZM

Views: 0

JATS XML


Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.


ISSN 1812-5093 (Print)