Comparison of Different Time Delay Compensation Methods for Networked DC Motor Speed Control

Cem, Suulker,; Emirler, Mümin Tolga

doi:10.1109/iceee2019.2019.00050

Cited by 2 publications

(1 citation statement)

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“…The CDOB estimates the effects of time delays as a disturbance at the application level by using a nominal model of a controlled subsystem, which can be considered as a simplified DT. A double disturbance observer (DDOB) was proposed to cope with the modeling errors in the CDOB-based time-delay compensation [36], [37]. The CDOB-based NCSs are affected by not only time delays but also packet losses [38].…”

Section: Introductionmentioning

confidence: 99%

Communication Quality Estimation Observer: An Approach for Integrated Communication Quality Estimation and Control for Digital-Twin-Assisted Cyber-Physical Systems

Kubo

2022

IEICE Trans. Commun.

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Cyber-physical systems (CPSs) assisted by digital twins (DTs) integrate sensing-actuation loops over communication networks in various infrastructure services and applications. This study overviews the concept, methodology, and applications of the integrated communication quality estimation and control for the DT-assisted CPSs from both communications and control perspectives. The DT-assisted CPSs can be considered as networked control systems (NCSs) with virtual dynamic models of physical entities. A communication quality estimation observer (CQEO), which is an extended version of the communication disturbance observer (CDOB) utilized for time-delay compensation in NCSs, is proposed to estimate the integrated effects of the quality of services (QoS) and cyberattacks on the NCS applications. A path diversity technique with the CQEO is also proposed to achieve reliable NCSs. The proposed technique is applied to two kinds of NCSs: remote motor control and haptic communication systems. Moreover, results of the simulation on a haptic communication system show the effectiveness of the proposed approach. In the end, future research directions of the CQEO-based scheme are presented.

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Section: Introductionmentioning

confidence: 99%