Results 31 to 40 of about 120,129 (162)

Safe Robust Adaptive Motion Control for Underactuated Marine Robots

open access: yesSensors
This article presents an innovative approach to the design of a safe adaptive backstepping control system. Tailored specifically for underactuated marine robots, the system utilizes simple sensors for enhanced practicality and efficiency.
G. Reza Nazmara, A. Pedro Aguiar
doaj   +1 more source

Asymptotic tracking with funnel control [PDF]

open access: yesPAMM, 2019
AbstractFunnel control is a strikingly simple control technique to ensure model free practical tracking for quite general nonlinear systems. It has its origin in the adaptive control theory, in particular, it is based on the principle of high gain feedback control.
openaire   +1 more source

Funnel Control Under Hard and Soft Output Constraints

open access: yes2022 IEEE 61st Conference on Decision and Control (CDC), 2022
This paper proposes a funnel control method under time-varying hard and soft output constraints. First, an online funnel planning scheme is designed that generates a constraint consistent funnel, which always respects hard (safety) constraints, and soft (performance) constraints are met only when they are not conflicting with the hard constraints. Next,
Mehdifar, Farhad   +2 more
openaire   +3 more sources

Funnel plots, performance variation and the Myocardial Infarction National Audit Project 2003–2004

open access: yesBMC Cardiovascular Disorders, 2006
Background Clinical governance requires health care professionals to improve standards of care and has resulted in comparison of clinical performance data.
Hall Alistair S   +3 more
doaj   +1 more source

Pelvic floor parameters predict postpartum stress urinary incontinence: a prospective MRI study

open access: yesInsights into Imaging, 2023
Objective To investigate the pelvic floor changes in primiparas with postpartum stress urinary incontinence (SUI) after vaginal delivery using pelvic floor MRI.
Cong You   +4 more
doaj   +1 more source

Adaptive fuzzy finite-time fault-tolerant funnel control of nonlinear systems with actuators failures

open access: yesAdvances in Mechanical Engineering, 2019
This article investigates adaptive fuzzy finite-time fault-tolerant funnel control of nonlinear systems with actuators failures, which contain outage, loss of effectiveness and stuck modes.
Ming Chen   +3 more
doaj   +1 more source

Fault Ride-through Hybrid Controller for MMC-HVDC Transmission System via Switching Control Units Based on Bang-bang Funnel Controller

open access: yesJournal of Modern Power Systems and Clean Energy, 2023
This paper proposes a fault ride-through hybrid controller (FRTHC) for modular multi-level converter based high-voltage direct current (MMC-HVDC) transmission systems. The FRTHC comprises four loops of cascading switching control units (SCUs).
Yang Liu   +3 more
doaj   +1 more source

Funnel Control for Systems with Relative Degree Two [PDF]

open access: yesSIAM Journal on Control and Optimization, 2013
Summary: Tracking of reference signals \(y_{\text{ref}}(\cdot)\) by the output \(y(\cdot)\) of linear (as well as a considerably large class of nonlinear) single-input, single-output systems is considered. The system is assumed to have strict relative degree two with (weakly) stable zero dynamics. The control objective is tracking of the error \(e=y-y_{
Hackl, Christoph M.   +4 more
openaire   +3 more sources

Fault-Tolerant Funnel Control for Uncertain Linear Systems [PDF]

open access: yesIEEE Transactions on Automatic Control, 2021
We study adaptive fault tolerant tracking control for uncertain linear systems. Based on recent results in funnel control and the time-varying Byrnes-Isidori form, we develop a low-complexity model-free controller which achieves prescribed performance of the tracking error for any given sufficiently smooth reference signal. Within the considered system
openaire   +2 more sources

Specifying the probability characteristics of funnel plot control limits: an investigation of three approaches.

open access: yesPLoS ONE, 2012
BackgroundEmphasis is increasingly being placed on the monitoring and comparison of clinical outcomes between healthcare providers. Funnel plots have become a standard graphical methodology to identify outliers and comprise plotting an outcome summary ...
Bradley N Manktelow, Sarah E Seaton
doaj   +1 more source

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