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Latin American Journal of Solids and Structures
versão On-line ISSN 1679-7825
GOMES, Herbert Martins. Fuzzy logic for structural system control. Lat. Am. j. solids struct. [online]. 2012, vol.9, n.1, pp. 111-129. ISSN 1679-7825. http://dx.doi.org/10.1590/S1679-78252012000100006.
This paper provides some information and numerical tests that aims to investigate the use of a Fuzzy Controller applied to control systems. Some advantages are reported regarding the use of this controller, such as the characteristic ease of implementation due to its semantic feature in the statement of the control rules. On the other hand, it is also hypothesized that these systems have a lower performance loss when the system to be controlled is nonlinear or has time varying parameters. Numerical tests are performed using modal LQR optimal control and Fuzzy control of non-collocated systems with full state feedback in a two-dimensional structure. The paper proposes a way of designing a controller that may be a supervisory Fuzzy controller for a traditional controller or even a fuzzy controller independent from the traditional control, consisting on individual mode controllers. Some comments are drawn regarding the performance of these proposals in a number of arrangements.
Palavras-chave : fuzzy sets; vibration control; heuristic algorithms.