Results 21 to 30 of about 408,399 (267)

An Automatic Collision Avoidance Algorithm for Multiple Marine Surface Vehicles

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2019
In recent years, unmanned surface vehicles have been widely used in various applications from military to civil domains. Seaports are crowded and ship accidents have increased.
Hedjar Ramdane, Bounkhel Messaoud
doaj   +1 more source

Grip Margin-Based Control Allocation for Enhanced Vehicle Stability in Four-Wheel Independent Steering Vehicle

open access: yesIEEE Access
This study aims to enhance the control performance of four-wheel independent steering vehicles (4WIS), which are increasingly recognized as a key innovation in electric vehicle technology. 4WIS provides a high degree of freedom and dynamic performance by
Gyu-Yong Hwang   +4 more
doaj   +1 more source

Optimizing nonlinear adaptive control allocation [PDF]

open access: yesModeling, Identification and Control: A Norwegian Research Bulletin, 2005
A control-Lyapunov approach is used to develop an adaptive optimizing control allocation algorithm for over-actuated mechanical systems where the actuator model is affine in the uncertain parameters. Uniform global (asymptotic) stability is guaranteed by the control allocation defined by the dynamic update laws in combination with an exponentially ...
Johannes Tjønnås, Tor A. Johansen
openaire   +3 more sources

Design and simulation of X-rudder control allocator for Submarine

open access: yesZhongguo Jianchuan Yanjiu, 2020
Objectives To solve the steering control problem of X-rudder submarines under different available rudder surfaces conditions, the rudder control distributor of an X-rudder submarine is designed.Methods A cascade control structure including a main ...
SHANG Jianpeng, LI Wenkui, HUANG Yuepeng
doaj   +1 more source

Stabilization of an Unconventional Large Airship When Hovering

open access: yesApplied Sciences, 2021
In this paper, we present the stabilization of an unconventional unmanned airship above a loading and unloading area. The study concerns a quad-rotor flying wing airship. This airship is devoted to freight transport.
Naoufel Azouz   +3 more
doaj   +1 more source

Heterogeneity in the Global Practice of Central Nervous System Staging in Pediatric Acute Lymphoblastic Leukemia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) involvement in childhood acute lymphoblastic leukemia (ALL) is assessed by cell counting and cytomorphology from cerebrospinal fluid (CSF) and is used for treatment stratification worldwide. The ratio of “CNS2” patients in clinical trials ranges from 3% to 40%, with unclear prognostic significance ...
Laura Almási   +14 more
wiley   +1 more source

Adaptive Backstepping Tracking Control for an over–Actuated DP Marine Vessel with Inertia Uncertainties

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2018
Designing a tracking control system for an over-actuated dynamic positioning marine vessel in the case of insufficient information on environmental disturbances, hydrodynamic damping, Coriolis forces and vessel inertia characteristics is considered.
Witkowska Anna, Śmierzchalski Roman
doaj   +1 more source

Efficacy and Safety Analysis of Roxarestat in Regulating Renal Anemia in Patients on Maintenance Hemodialysis

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Objective To compare the efficacy and safety of roxarestat versus recombinant human erythropoietin (rhEPO) in the management of renal anemia in patients undergoing maintenance hemodialysis. Methods This was a prospective, open‐label, randomized controlled trial.
Lingling Chen, Junjie Zhu, Qiaonan Ge
wiley   +1 more source

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo   +5 more
wiley   +1 more source

Coordinated Control Strategy for Drive Mode Switching of Double Rotor In-Wheel Motor Based on MPC and Control Allocation

open access: yesWorld Electric Vehicle Journal, 2023
To overcome the problems existing in the practical application of traditional in-wheel motors used for electric vehicles, an integrated double rotor in-wheel motor was proposed, which can realize three drive modes to meet variable operating condition ...
Junmin Li   +3 more
doaj   +1 more source

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