Title :
Using preaction with infinite or finite preview for perfect or almost perfect digital tracking
Author :
Marro, G. ; Fantoni, M.
Author_Institution :
Dipartimento di Elettronica, Inf. e Sistemistica, Bologna Univ., Italy
Abstract :
Perfect digital tracking is approached by using a dual-input controller which processes both the standard reference input and a suitable transient-correcting signal. The latter is generated by convolution of the reference with a pre-computed sequence depending on the controlled system dynamics. The proposed control theme can be used in both cases of infinite or finite (and possibly time-varying) preview time, and gives perfect or almost perfect tracking, respectively, also in the nonminimum-phase case
Keywords :
digital control; feedback; predictive control; tracking; almost perfect digital tracking; finite preview; infinite preview; nonminimum-phase systems; preaction; standard reference input; transient-correcting signal; Control systems; Convolution; Error correction; Nonlinear control systems; Nonlinear systems; Process control; Sampling methods; Signal generators; Signal processing; Trajectory;
Conference_Titel :
Electrotechnical Conference, 1996. MELECON '96., 8th Mediterranean
Conference_Location :
Bari
Print_ISBN :
0-7803-3109-5
DOI :
10.1109/MELCON.1996.551000
