Abstract
The present work is devoted to a time-optimal control problem for a singularly perturbed linear autonomous system with smooth geometric constraints on the control and an unbounded target set:
\(\left\{\begin{array}[]{ll}\phantom{\varepsilon}\dot{x}=A_{11}x+A_{12}y+B_{1}u, &x\in\mathbb{R}^{n},\,y\in\mathbb{R}^{m},\,u\in\mathbb{R}^{r},\\ \varepsilon\dot{y}=A_{21}x+A_{22}y+B_{2}u,&\|u\|\leq 1,\\ x(0)=x_{0}\not=0,\quad y(0)=y_{0},&0<\varepsilon\ll 1,\\ x(T_{\varepsilon})=0,\quad y(T_{\varepsilon})\in\mathbb{R}^{m},\quad T_{ \varepsilon}\longrightarrow\min.\end{array}\right.\)
The uniqueness of the representation of the optimal control with a normalized defining vector in the limit problem is proved. The solvability of the problem is established. The limit relations for the optimal time and the vector determining the optimal control are obtained. An asymptotic analog of the implicit function theorem is proved and used to derive a complete asymptotics of the solution to the problem in powers of the small parameter \(\varepsilon\).
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REFERENCES
L. S. Pontryagin, V. G. Boltyanskii, R. V. Gamkrelidze, and E. F. Mishchenko, The Mathematical Theory of Optimal Processes (Fizmatgiz, Moscow, 1961; Wiley, New York, 1962).
M. G. Dmitriev and G. A. Kurina, “Singular perturbations in control problems,” Autom. Remote Control 67 (1), 1–43 (2006). https://doi.org/10.1134/S0005117906010012
Y. Zhang, D. S. Naidu, C. Cai, and Y. Zou, “Singular perturbations and time scales in control theories and applications: An overview 2002–2012,” Int. J. Inf. Syst. Sci. 9 (1), 1–36 (2014).
P. V. Kokotović and A. H. Haddad, “Controllability and time-optimal control of systems with slow and fast models,” IEEE Trans. Automat. Control 20 (1), 111–113 (1975). https://doi.org/10.1109/TAC.1975.1100852
A. L. Dontchev, Perturbations, Approximations and Sensitivity Analysis of Optimal Control Systems (Springer, Berlin, 1983; Mir, Moscow, 1987). https://doi.org/10.1007/BFb0043612
A. L. Donchev and V. M. Veliov, “Singular perturbation in Mayer’s problem for linear systems,” SIAM J. Control Optimiz. 21 (4), 566–581 (1983). https://doi.org/10.1137/0321034
G. A. Kurina and T. H. Nguyen, “Asymptotic solution of singularly perturbed linear-quadratic optimal control problems with discontinuous coefficients,” Comp. Math. Math. Phys. 52 (4), 524–547 (2012). https://doi.org/10.1134/S0965542512040100
G. A. Kurina and N. T. Hoai, “Projector approach for constructing the zero order asymptotic solution for the singularly perturbed linear-quadratic control problem in a critical case,” AIP Conf. Proc. 1997, article 020073 (2018). https://doi.org/10.1063/1.5049067
A. R. Danilin and A. M. Il’in, “On the structure of the solution of a perturbed time-optimal problem,” Fundam. Prikl. Mat. 4 (3), 905–926 (1998).
A. R. Danilin and O. O. Kovrizhnykh, “Time-optimal control of a small mass point without environmental resistance,” Dokl. Math. 88 (1), 465–467 (2013). https://doi.org/10.1134/S1064562413040364
A. R. Danilin and Yu. V. Parysheva, “Asymptotics of the optimal cost functional in a linear optimal control problem,” Dokl. Math. 80 (1), 478–481 (2009). https://doi.org/10.1134/S1064562409040073
A. A. Shaburov, “Asymptotic expansion of a solution of a singularly perturbed optimal control problem with a convex integral performance index and smooth control constraints,” Izv. Inst. Mat. Inform. Udmurt. Gos. Univ. 50 (2), 110–120 (2017).
A. R. Danilin and O. O. Kovrizhnykh, “On the dependence of a time-optimal problem for a linear system on two parameters,” Vestn. Chelyab. Gos. Univ., No. 27 (242), 46–60 (2011).
A. A. Shaburov, “Asymptotic expansion of the solution to a singularly perturbed optimal control problem with an integral convex performance index and smooth geometric constraints on the control,” Vest. Tambov. Univ., Ser. Estestv. Tekhn. Nauki 24 (125), 119–614 (2019).
A. A. Shaburov, Asymptotic Expansion of the Solution to Singularly Perturbed Optimal Control Problems with Smooth Geometric Constraints on the Control and an Integral Convex Performance Index, Candidate’s Dissertation in Physics and Mathematics (Ural. Fed. Univ., Yekaterinburg, 2019).
E. B. Lee and L. Markus, Foundations of Optimal Control Theory (Wiley, New York, 1967; Nauka, Moscow, 1972).
A. B. Vasil’eva and V. F. Butuzov, Asymptotic Expansions of Solutions of Singularly Perturbed Equations (Nauka, Moscow, 1973) [in Russian].
L. V. Kantorovich and G. P. Akilov, Functional Analysis (Nauka, Moscow, 1984) [in Russian].
Funding
The research of the second author was supported by the Russian Academic Excellence Project (Agreement no. 02.A03.21.0006 of August 27, 2013, between the Ministry of Education and Science of the Russian Federation and Ural Federal University).
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Translated from Trudy Instituta Matematiki i Mekhaniki UrO RAN, Vol. 26, No. 2, pp. 132 - 146, 2020 https://doi.org/10.21538/0134-4889-2020-26-2-132-146.
Translated by I. Tselishcheva
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Danilin, A.R., Kovrizhnykh, O.O. Asymptotics of a Solution to a Singularly Perturbed Time-Optimal Control Problem of Transferring an Object to a Set. Proc. Steklov Inst. Math. 313 (Suppl 1), S40–S53 (2021). https://doi.org/10.1134/S0081543821030068
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DOI: https://doi.org/10.1134/S0081543821030068