In this paper, we study the concept of approximate controllability of retarded network systems of neutral type. On one hand, we reformulate such systems as free-delay boundary control systems on product spaces. On the other hand, we use the rich theory of infinite-dimensional linear systems to derive necessary and sufficient conditions for the approximate controllability. Moreover, we propose a rank condition for which we can easily verify the conditions of controllability. Our approach is mainly based on the feedback theory of regular linear systems in the Salamon-Weiss sense.
Citation: Yassine El Gantouh, Said Hadd. Well-posedness and approximate controllability of neutral network systems[J]. Networks and Heterogeneous Media, 2021, 16(4): 569-589. doi: 10.3934/nhm.2021018
In this paper, we study the concept of approximate controllability of retarded network systems of neutral type. On one hand, we reformulate such systems as free-delay boundary control systems on product spaces. On the other hand, we use the rich theory of infinite-dimensional linear systems to derive necessary and sufficient conditions for the approximate controllability. Moreover, we propose a rank condition for which we can easily verify the conditions of controllability. Our approach is mainly based on the feedback theory of regular linear systems in the Salamon-Weiss sense.
| [1] |
Asymptotic behaviour of flows on reducible networks. J. Networks Heterogeneous Media (2014) 9: 197-216.
|
| [2] | J. Banasiak and A. Puchalska, A Transport on networks - a playground of continuous and discrete mathematics in population dynamics, In Mathematics Applied to Engineering, Modelling, and Social Issues, Springer, Cham, 2019,439–487. |
| [3] | A. Bátkai and S. Piazzera, Semigroups for Delay Equations, Research Notes in Mathematics, 10, A K Peters Ltd, Wellesley, 2005. |
| [4] |
Asymptotic periodicity of flows in time-depending networks. J. Networks Heterogeneous Media (2013) 8: 843-855.
|
| [5] |
Flows in networks with delay in the vertices. Math. Nachr. (2012) 285: 1603-1615.
|
| [6] |
Complex networks: Structure and dynamics. Phys. Rep. (2006) 424: 175-308.
|
| [7] |
Regular linear systems governed by neutral FDEs.. J. Math. Anal. Appl. (2006) 320: 836-858.
|
| [8] | H. Brezis, Functional Analysis, Sobolev Spaces and Partial Differential Equations, Springer, New York, 2010. |
| [9] |
R. F. Curtain and H. Zwart, An Introduction to Infinite-Dimensional Linear Systems Theory, Texts in Applied Mathematics, 21 Spinger-Verlag, New York, 1995. doi: 10.1007/978-1-4612-4224-6
|
| [10] |
Controllability of linear discrete systems with constant coefficients and pure delay. SIAM J. Control Optim. (2008) 47: 1140-1149.
|
| [11] |
The semigroup approach to transport processes in networks. Physica D: Nonlinear Phenomena (2010) 239: 1416-1421.
|
| [12] |
Y. El Gantouh, S. Hadd and A. Rhandi, Approximate controllabilty of network systems, Evol. Equ. Control Theory, (2020). doi: 10.3934/eect.2020091
|
| [13] | Y. El Gantouh, S. Hadd and A. Rhandi, Controllability of vertex delay type problems by the regular linear systems approach, Preprint. |
| [14] |
Exact and positive controllability of boundary control systems, networks. J. Networks Heterogeneous Media (2017) 12: 319-337.
|
| [15] |
Maximal controllability for boundary control problems. Appl. Math. Optim. (2010) 62: 205-227.
|
| [16] | K.-J. Engel and R. Nagel, One-parameter Semigroups for Linear Evolution Equations, Springer-Verlag, New York, 2000. |
| [17] | Perturbing the boundary conditions of a generator. Houston J. Math. (1987) 13: 213-229. |
| [18] |
Unbounded perturbations of $C_0$-semigroups on Banach spaces and Applications. Semigroup Forum (2005) 70: 451-465.
|
| [19] |
The regular linear systems associated to the shift semigroups and application to control delay systems with delay. Math. Control Signals Sys. (2006) 18: 272-291.
|
| [20] |
Unbounded perturbations of the generator domain. Discrete and Continuous Dynamical Sys. (2015) 35: 703-723.
|
| [21] |
Eventual norm continuity for neutral semigroups on Banach spaces. J. Math. Anal. Appl. (2011) 375: 543-552.
|
| [22] |
J. K. Hale and S. M. Verduyn Lunel, Introduction to Functional Differential Equations, Applied Math. Sciences Series, 99, Springer-Verlag, New York, 1993. doi: 10.1007/978-1-4612-4342-7
|
| [23] |
Asymptotic behavior of flows in networks. Forum Math. (2007) 19: 429-461.
|
| [24] |
The analysis of exact controllability of neutral-type systems by the moment problem approach. SIAM J. Control Optim. (2007) 46: 2148-2181.
|
| [25] |
On controllability and observability of time delay systems. IEEE Trans. Automat. Control (1984) 29: 432-439.
|
| [26] |
Infinite-dimensional linear system with unbounded control and observation: A functional analytic approach. Trans. Amer. Math. Soc. (1987) 300: 383-431.
|
| [27] |
Radius of approximate controllability oflinear retarded systems under structured perturbations. Systems Control Lett. (2015) 84: 13-20.
|
| [28] |
(2005) Well-posed Linear Systems. Cambridge Univ: Press.
|
| [29] |
Controllability and observability of systems of linear delay differential equations via the matrix Lambert $W$ function. IEEE Trans. Automat. Control (2008) 53: 854-860.
|
| [30] |
M. Tucsnak and G. Weiss, Observation and Control for Operator Semigroups, Birkhäuser, Basel, Boston, Berlin, 2009. doi: 10.1007/978-3-7643-8994-9
|
| [31] |
Admissible observation operators for linear semigoups. Israel J. Math. (1989) 65: 17-43.
|
| [32] |
Admissibility of unbounded control operators. SIAM J. Control Optim. (1989) 27: 527-545.
|
| [33] |
Transfer functions of regular linear systems. Part I: Characterization of regularity. Trans. Amer. Math. Soc. (1994) 342: 827-854.
|
| [34] |
Regular linear systems with feedback. Math. Control Signals Systems (1994) 7: 23-57.
|
| [35] | Q. C. Zhong, Robust Control of Time-Delay Systems, Springer-Verlag Limited, London, 2006. |