TY - JOUR
T1 - Uncertainty and disturbance estimator-based controllers design under finite control bandwidth constraint
AU - Shmilovitz, Doron
AU - Kuperman, Alon
AU - Aharon, Ilan
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/13
Y1 - 2017/7/13
N2 - In this paper, tracking versus disturbance rejection tradeoff is revealed and quantitatively investigated for systems utilizing uncertainty and disturbance estimator (UDE)-based controllers. The tradeoff appears to be due to finite control bandwidth, characterizing any real-world application. Based on the exposed findings, guidelines for designing UDE controllers are provided, and respective operational limits are indicated. It is shown that two operation points exist on performance envelope, characterized by similar disturbance rejection, while yielding different tracking performance. Moreover, it is demonstrated that typical proportional-integrative controllers, designed using zero-pole cancellation, are a particular case of UDE controllers. As an example, the proposed method is applied to average current control of a bidirectional noninverting multimode buck-boost converter. Simulations and experimental results are provided to validate the research outcomes.
AB - In this paper, tracking versus disturbance rejection tradeoff is revealed and quantitatively investigated for systems utilizing uncertainty and disturbance estimator (UDE)-based controllers. The tradeoff appears to be due to finite control bandwidth, characterizing any real-world application. Based on the exposed findings, guidelines for designing UDE controllers are provided, and respective operational limits are indicated. It is shown that two operation points exist on performance envelope, characterized by similar disturbance rejection, while yielding different tracking performance. Moreover, it is demonstrated that typical proportional-integrative controllers, designed using zero-pole cancellation, are a particular case of UDE controllers. As an example, the proposed method is applied to average current control of a bidirectional noninverting multimode buck-boost converter. Simulations and experimental results are provided to validate the research outcomes.
KW - Bidirectional noninverting buck-boost (BDNIBB) converter
KW - Disturbance estimator (UDE)
KW - Finite control bandwidth
KW - Tracking versus disturbance rejection
KW - Uncertainty
UR - http://www.scopus.com/inward/record.url?scp=85028882047&partnerID=8YFLogxK
U2 - 10.1109/TIE.2017.2726987
DO - 10.1109/TIE.2017.2726987
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:85028882047
SN - 0278-0046
VL - 65
SP - 1439
EP - 1449
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 2
M1 - 2726987
ER -