Testing a simple control law to reduce broadband frequency harmonic vibrations using semi-active tuned mass dampers

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015-04-09

Autores

Moutinho, C. (Autor) FEUP

Revista

Título: Smart Materials and Structures

Vol. 24

ISSN: 0964-1726

Editora: Institute of Physics Publishing

Indexação

ISI Web of Knowledge - 8 Citações

ISI Web of Science

Scopus - 20 Citações

Outras Informações

ID Authenticus: P-00A-D25

DOI: 10.1088/0964-1726/24/5/055007

Abstract (EN): This paper is focused on the control problems related to semi-active tuned mass dampers (TMDs) used to reduce harmonic vibrations, specially involving civil structures. A simplified version of the phase control law is derived and its effectiveness is investigated and evaluated. The objective is to improve the functioning of control systems of this type by simplifying the measurement process and reducing the number of variables involved, making the control system more feasible and reliable. Because the control law is of ON/OFF type, combined with appropriate trigger conditions, the activity of the actuation system may be significantly reduced, which may be of few seconds a day in many practical cases, increasing the durability of the device and reducing its maintenance. Moreover, due to the ability of the control system to command the motion of the inertial mass, the semi-active TMD is relatively insensitive to its initial tuning, resulting in the capability of self-tuning and in the possibility of controlling several vibration modes of a structure over a significant broadband frequency.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12