O amortecedor magneto-reol´ogico ´e um dispositivo que possui um fluido interno capaz de ser controlado atrav´es da corrente el´etrica. A corrente el´etrica controla a resistˆencia do dispositivo, um recurso que permite aos usu´arios controlar a rigidez do amortecedor contra movimentos. Este artigo apresenta um procedimento de identifica¸c˜ao para um amortecedor magneto-reol´ogico. A identifica¸c˜ao foi realizada com dados experimentais: os dados indicam queo modelo Dahl mostra resultados promissores.
Abstract. The note presents conditions to assure weak stability in the mean for a hysteresis Bouc-Wen model controlled by a proportionalintegral controller subject to random failures. When a failure happens, the controller turns off and remains off for a while. After that the controller turns on and keeps on until the occurrence of the next failure. The failures occur according to a Poisson distributed process. A numerical example illustrates the result.
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