Moreira, Manoel R. [UNESP]Mainardi Junior, Edson I. [UNESP]Esteves, Talita T. [UNESP]Teixeira, Marcelo C. M. [UNESP]Cardim, Rodrigo [UNESP]Assuncao, Edvaldo [UNESP]Faria, Flavio A. [UNESP]2014-05-202014-05-202010-01-01Mathematical Problems In Engineering. New York: Hindawi Publishing Corporation, p. 12, 2010.1024-123Xhttp://hdl.handle.net/11449/9868In some practical problems, for instance in the control of mechanical systems using accelerometers as sensors, it is easier to obtain the state-derivative signals than the state signals. This paper shows that (i) linear time-invariant plants given by the state-space model matrices {A, B, C, D} with output equal to the state-derivative vector are not observable and can not be stabilizable by using an output feedback if det(Lambda) = 0 and (ii) the rejection of a constant disturbance added to the input of the aforementioned plants, considering det (A) not equal 0, and a static output feedback controller is not possible. The proposed results can be useful in the analysis and design of control systems with state-derivative feedback.12engArtigo10.1155/2010/123751WOS:000286269700001Acesso abertoWOS000286269700001.pdf875516058014262650620873805714620000-0002-1072-3814