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Título del libro: 2015 12th International Conference On Electrical Engineering, Computing Science And Automatic Control, Cce 2015
Título del capítulo: Orientation of radio-telescope secondary mirror via parallel platform

Autores UNAM:
SAJJAD KESHTKAR;
Autores externos:

Idioma:
Inglés
Año de publicación:
2015
Palabras clave:

Automation; Degrees of freedom (mechanics); Manipulators; Mirrors; Process control; Sliding mode control; Chattering effects; Parallel manipulators; Parallel platforms; Positioning tasks; Six degree-of-freedom; Sliding mode algorithms; Stewart platforms; Unmodelled dynamics; Radio telescopes


Resumen:

In this work a parallel manipulator (Stewart platform) is used to align and maintain the position of the secondary mirror of a radio-telescope. The six degree of freedom platform gives the significant advantage to reach the maximum performance for the positioning task. This system uses six lineal actuators with changeable lengths to obtain the desired position. The filtered version of sliding mode algorithm is used to control and orient the system in presence of unmodelled dynamics and perturbations. It provides chattering effect reduction and improving of the performance of the system. © 2015 IEEE.


Entidades citadas de la UNAM: