Results 21 to 30 of about 54,590 (219)
IEEE Access, 2021 In this paper, a high order disturbance observer based stochastic adaptive anti-disturbance control algorithm has been designed for the space unmanned systems (SUSs) with high dynamic disturbances and stochastic uncertainties.
Yao Zhang +3 more
doaj +1 more source
International Journal of Advanced Robotic Systems, 2017 A novel low-complexity adaptive control method, capable of guaranteeing the transient and steady-state tracking performance in the presence of unknown nonlinearities and actuator saturation, is investigated for the longitudinal dynamics of a generic ...
Caisheng Wei +4 more
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Modeling of Stochastic Wind Based on Operational Flight Data Using Karhunen–Loève Expansion Method
Sensors, 2020 Wind has a significant influence on the operational flight safety. To quantify the influence of the wind characteristics, a wind series generator is required in simulations.
Xiaolong Wang +3 more
doaj +1 more source
An Adaptive Command Scaling Method for Incremental Flight Control Allocation
ActuatorsModern aircraft usually employ control allocation to distribute virtual control commands among redundant effectors. Infeasible virtual command can occur frequently due to aggressive maneuvers and limited control authority.
Zhidong Lu +3 more
doaj +1 more source
International Journal of Advanced Robotic Systems, 2014 The tethered space robot (TSR) is a new concept of space robot which consists of a robot platform, space tether and operation robot. This paper presents a multi-objective optimal trajectory planning and a coordinated tracking control scheme for TSR based
Panfeng Huang, Xiudong Xu, Zhongjie Meng
doaj +1 more source
An Innovative Priority-Aware Mission Planning Framework for an Agile Earth Observation Satellite
AerospaceEarth observation satellites, particularly agile Earth observation satellites (AEOSs) with enhanced attitude maneuverability, have become increasingly crucial in emergency response and disaster monitoring operations.
Guangtong Zhu +4 more
doaj +1 more source
Proceedings, 2018 This paper presents an approach to model a ski jumper as a multi-body system for an optimal control application. The modeling is based on the constrained Newton-Euler-Equations.
Patrick Piprek +6 more
doaj +1 more source
Situational Awareness and Problems of Its Formation in the Tasks of UAV Behavior Control
Applied Sciences, 2021 Situational awareness formation is one of the most critical elements in solving the problem of UAV behavior control. It aims to provide information support for UAV behavior control according to its objectives and tasks to be completed.
Dmitry M. Igonin +2 more
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Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Online Deterministic 3D Trajectory Generation for Electric Vertical Take-Off and Landing Aircraft
AerospaceThe use of non-piloted eVTOL aircraft in non-segregated airspace requires reliable and deterministic automatic flight guidance systems for the aircraft to remain predictable to all the users of the airspace and maintain a high level of safety.
Zoe Mbikayi +6 more
doaj +1 more source