Title :
On nonlinear controllers for persistent disturbance rejection
Author :
Miller, Daniel E. ; Lucic, Vladimir M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
Abstract :
An l1-optimal linear time-invariant (LTI) compensator may have an order significantly higher than that of the plant. In the state feedback case, there has been recent work exploring the use of nonlinear static feedback controllers which provide near optimal performance. Here we show that such controllers are noise tolerant and we derive a superposition-like bound on the closed loop performance in the event that the plant initial condition, the disturbance, and the noise are all non-zero
Keywords :
closed loop systems; compensation; discrete time systems; fault tolerance; nonlinear control systems; optimal control; state feedback; closed loop systems; compensation; linear time-invariant systems; noise tolerance; nonlinear controllers; optimal control; persistent disturbance rejection; state feedback; Control systems; Councils; H infinity control; Optimal control; Output feedback; Performance gain; Proportional control; Size control; State feedback; Transient response;
Conference_Titel :
American Control Conference, 1999. Proceedings of the 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4990-3
DOI :
10.1109/ACC.1999.786525
