Title :
Error feedback and a servomechanism problem for uncertain nonlinear systems
Author :
Lei, Hao ; Lin, Wei
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Case Western Reserve Univ., Cleveland, OH, USA
fDate :
7/1/2006 12:00:00 AM
Abstract :
The robust servomechanism problem, also known as the problem of robust output regulation, is considered for a family of uncertain triangular systems. In contrast to the previous work where the uncertain vector field of the controlled plant was assumed to be bounded by a linear growth of the unmeasurable states multiplied by a polynomial function of the system output, we show that the polynomial growth condition can be relaxed and robust output regulation by error feedback is still possible, as long as the uncertain system is dominated by a continuous function of the system output multiplied by a linear growth of the unmeasurable states.
Keywords :
feedback; nonlinear control systems; polynomials; regulation; robust control; servomechanisms; uncertain systems; error feedback; polynomial function; robust output regulation; servomechanism; uncertain nonlinear systems; uncertain triangular systems; Control systems; Error correction; Linear feedback control systems; Nonlinear systems; Output feedback; Polynomials; Robust control; Robustness; Servomechanisms; Vectors; Error feedback; internal model; robust output regulation; uncertain nonlinear systems;
Journal_Title :
Automatic Control, IEEE Transactions on
DOI :
10.1109/TAC.2006.878778