Title :
Optimal design of 2-DOF digital controller for sampled-data tracking systems with preview
Author :
Polyakov, K.Y. ; Rosenwasser, E.N. ; Lampe, B.P.
Author_Institution :
Inst. of Autom. for Ship Plants, State Univ. of Ocean Technol., St. Petersburg, Russia
Abstract :
The design of optimal sampled-data tracking controllers with two and 2 1/2 degrees of freedom (DOF) are considered for the case when future values of the reference signal are known over an interval τ. A rigorous solution is given in the frequency domain on basis of Laplace transforms in continuous time. Limiting properties of the solution for for τ → ∞ are investigated. It is shown that the use of a reference controller makes it possible to circumvent fundamental limitations on the achievable tracking precision caused by unstable poles of the plant.
Keywords :
control system synthesis; predictive control; sampled data systems; Laplace transforms; digital controller design; optimal design; optimal sampled-data tracking controllers; reference controller; sampled-data tracking systems; Automation; Control systems; Cost function; Delay systems; Digital control; Error correction; Optimal control; Robust stability; Signal design; Tracking loops;
Conference_Titel :
Decision and Control, 2004. CDC. 43rd IEEE Conference on
Print_ISBN :
0-7803-8682-5
DOI :
10.1109/CDC.2004.1428747
