Title :
Rejection of periodic disturbances with unknown period-a frequency domain approach
Author :
Hillerström, Gunnar ; Sternby, Jan
Author_Institution :
Div. of Autom. Control, Lulea Univ. of Technol., Sweden
fDate :
29 June-1 July 1994
Abstract :
A self-tuning discrete time repetitive controller comprising a gradient descent disturbance model estimation and a pseudo feedforward controller is investigated. To illustrate the feasibility of the approach considered an example is given for rejecting a periodic disturbance acting on a nonminimum-phase plant.
Keywords :
adaptive control; discrete time systems; feedforward; frequency-domain analysis; self-adjusting systems; discrete time repetitive controller; frequency domain analysis; gradient descent disturbance model estimation; nonminimum-phase plant; periodic disturbance rejection; pseudo feedforward controller; self-tuning; Automatic frequency control; Control theory; Delay; Eigenvalues and eigenfunctions; Feeds; Frequency domain analysis; Polynomials; Robots; Sampling methods; Signal generators;
Conference_Titel :
American Control Conference, 1994
Print_ISBN :
0-7803-1783-1
DOI :
10.1109/ACC.1994.752346
