TY  - JOUR
TI  - An enhanced bandwidth disturbance observer based control– S-filter approach
AB  - A continuous time enhanced bandwidth disturbance observer based control (DOBC) scheme is proposed in
this paper. The classical Q-filter is implemented in feedback form and a signum function is inserted into the loop. The
loop with this modification becomes capable of detecting small magnitude matched disturbances and we present an in
depth discussion of the stability and performance issues comparatively. The proposed approach is called S-filter approach
and the results outperform the classical approach under certain conditions. The contribution of the current paper is to
advance the subject area to nonlinear filters for DOBC loops with guaranteed stability and performance. A specific case
containing a signum function is elaborated throughout the paper and the obtained energy of the disturbance prediction
error is shown to be smaller than the Q-filter based counterpart.
AU  - Efe, Mehmet Önder
AU  - Kasnakoğlu, Coşku
DO  - 10.3906/elk-2009-13
PY  - 2021
JO  - Turkish Journal of Electrical Engineering and Computer Sciences
VL  - 29
IS  - 4
SN  - 1300-0632
SP  - 2170
EP  - 2185
DB  - TRDizin
UR  - http://search/yayin/detay/524099
ER  -