Ponencia
Output feedback control of radially-dependent reaction-diffusion PDEs on balls of arbitrary dimensions
Autor/es | Vázquez Valenzuela, Rafael
Zhang, Jing Krstic, Miroslav Qi, Jie |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos |
Fecha de publicación | 2020 |
Fecha de depósito | 2023-05-31 |
Publicado en |
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ISBN/ISSN | 2405-8963 |
Resumen | Recently, the problem of boundary stabilization and estimation for unstable linear constant-coefficient reaction-diffusion equation on n-balls (in particular, disks and spheres) has been solved by means of the backstepping ... Recently, the problem of boundary stabilization and estimation for unstable linear constant-coefficient reaction-diffusion equation on n-balls (in particular, disks and spheres) has been solved by means of the backstepping method. However, the extension of this result to spatially-varying coefficients is far from trivial. Some early success has been achieved under simplifying conditions, such as radially-varying reaction coefficients under revolution symmetry, on a disk or a sphere. These particular cases notwithstanding, the problem remains open. The main issue is that the equations become singular in the radius; when applying the backstepping method, the same type of singularity appears in the kernel equations. Traditionally, well-posedness of these equations has been proved by transforming them into integral equations and then applying the method of successive approximations. In this case, with the resulting integral equation becoming singular, successive approximations do not easily apply. This paper takes a different route and directly addresses the kernel equations via a power series approach, finding in the process the required conditions for the radially-varying coefficients and stating the existence of the series solution. This approach provides a direct numerical method that can be readily applied, despite singularities, to both control and observer boundary design problems. |
Agencias financiadoras | Fundación Nacional de Ciencias Naturales de China (NSFC) Universidad de Donghua Ministerio de Ciencia, Innovación y Universidades (MICINN). España |
Identificador del proyecto | 61773112
CUSF-DH-D-2019089 CSC201806630010 PGC2018-100680-B-C21 |
Cita | Vázquez Valenzuela, R., Zhang, J., Krstic, M. y Qi, J. (2020). Output feedback control of radially-dependent reaction-diffusion PDEs on balls of arbitrary dimensions. En 21st IFAC World Congress, 2020, IFAC-PapersOnLine, 53 (2) (7635-7640). |
Ficheros | Tamaño | Formato | Ver | Descripción |
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IFAC_PoL_2020_Vazquez_Output_OA.pdf | 1.168Mb | [PDF] | Ver/ | |