Results 71 to 80 of about 33,178 (299)

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

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   +1 more source

Refined Metamodel Disturbance Observer-Based Control for Coarse Pointing Assembly Under Constraints

open access: yesGuidance, Navigation and Control
The target tracking performance of the coarse pointing assembly (CPA) is a critical factor in determining the data transmission efficiency of the inter-satellite laser communication.
Yongjian Yang   +4 more
doaj   +1 more source

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

open access: yesFEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

Reciprocal Neural State–Disturbance Observer for Model-Free Trajectory Tracking of Robotic Manipulators

open access: yesMathematics
High-precision trajectory tracking of robotic manipulators is fundamentally challenged by strong nonlinear dynamics, unmodeled uncertainties, and external disturbances.
Binluan Wang   +3 more
doaj   +1 more source

Stabilization Control of Continuous-Time Fractional Positive Systems Based on Disturbance Observer

open access: yesIEEE Access, 2016
This paper studies the problem of stabilization control for a class of continuous-time fractional systems subject to external constant disturbances based on a disturbance observer.
Shu-Yi Shao, Mou Chen, Qing-Xian Wu
doaj   +1 more source

Disturbance rejection analysis of a disturbance observer based velocity controller

open access: yes, 2016
Motion control usually includes the precise control of position/velocity and acceleration control while accurate acceleration control is not useful in many applications.
Senevirathne, HR   +2 more
core   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Observation of a Class of Disturbance in Time Series Expansion for Fractional Order Systems

open access: yesAbstract and Applied Analysis, 2014
This paper is concerned with the problem of designing disturbance observer for fractional order systems, of which the disturbance is in time series expansion. The stability of a special observer with the selected nonlinear weighted function and transient
Yiheng Wei   +4 more
doaj   +1 more source

Comparative of disturbance suppression effect of Robust Steering control law by differential estimation methods

open access: yesNihon Kikai Gakkai ronbunshu, 2020
Recently, in the steering control system based on the steer by wire and the automatic operation, it is possible to flexibly change the relationship between steering input and vehicle response characteristics.
Toshio OHTA   +3 more
doaj   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

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