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State Space Disturbance Observer Considering Residual Disturbance [PDF]

open access: yesIEEE Access, 2020
This paper presents a novel disturbance observer (DOB) for overcoming the limitation of uniformly bounded stability in existing DOB-based control systems and to attain asymptotic stability.
Seungkyu Park, Tae Sung Yoon
doaj   +2 more sources

Performance Recovery and Stability Analysis of Disturbance Observer Under Unmodeled Dynamics [PDF]

open access: yesSensors
Feedback system design is often achieved by neglecting the unmodeled dynamics, such as the actuator and sensor, to reduce design complexity. It is based on an assumption that the unmodeled dynamics are fast enough to be negligible.
Youngjun Joo
doaj   +2 more sources

Finite-Time Disturbance Observer for Robotic Manipulators [PDF]

open access: yesSensors, 2019
Robotic manipulators may be subject to different types of disturbances such as unknown payloads, unmodeled dynamics, and environment interaction forces.
Pengfei Cao, Yahui Gan, Xianzhong Dai
doaj   +2 more sources

Adaptive finite-time fault-tolerant control scheme of UAV against combined faults [PDF]

open access: yesScientific Reports
The control of unmanned aerial vehicles (UAVs) has been an active area of research over the past decade, particularly for operations in complex environments.
Xiangfeng Yan, Tao Li, Yuan Tian
doaj   +2 more sources

Combination of Functional and Disturbance Observer for Positive Systems with Disturbances

open access: yesMathematics, 2022
This technique note proposes two classes of functional and disturbance observers for positive systems with structural and non-structural disturbances, respectively.
Lanai Huang   +3 more
doaj   +1 more source

Universal nonlinear disturbance observer for robotic manipulators

open access: yesInternational Journal of Advanced Robotic Systems, 2023
Dynamic uncertainties and unknown disturbances will degrade the tracking performance of robots. When using a disturber observer-based controller, the key to effectively compensate for these uncertainties is to measure or estimate as accurately as ...
Feilong Zhang   +3 more
doaj   +1 more source

Adaptive Control for Multi-Shaft with Web Materials Linkage Systems

open access: yesInventions, 2021
In this paper, a fuzzy disturbance observer and a high-gain disturbance observer based on a variable structure controller are applied to deal with imprecise multi-shaft with web materials linkage systems taking into account the variation of the moment of
Van Trong Dang   +6 more
doaj   +1 more source

Bipartite Containment Disturbance Rejection Using Disturbance Observers

open access: yesIEEE Access, 2022
This paper mainly addresses bipartite containment control of multi-agent systems (MASs) subject to exogenous disturbances. With dynamic gain technique independent of any global information, the disturbance observer method is applied to estimate disturbances generated by heterogeneous nonlinear exosystems.
Jie Wu, Li Wang, Xi Sheng Zhan
openaire   +2 more sources

Variable universe adaptive fuzzy sliding mode projective synchronization of hyperjerk system based on disturbance observer

open access: yesSN Applied Sciences, 2021
In this paper, a sliding mode projective synchronization strategy based on disturbance observer and fuzzy system is presented to implement projective synchronization of hyperjerk system with low time-varying disturbance and white noise.
Baojie Zhang   +3 more
doaj   +1 more source

Output feedback sliding mode control based on adaptive sliding mode disturbance observer

open access: yesMeasurement + Control, 2022
In this paper, an adaptive sliding mode disturbance observer is designed to counteract the disturbance actively. By designing the adaptive laws, the assumptions on the disturbance are relaxed in the proposed observer, its first derivative upper bound is ...
Chen Yunjun   +3 more
doaj   +1 more source

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