Results 61 to 70 of about 988,791 (345)

H∞ Control of Nonlinear Systems: A Class of Controllers [PDF]

, 1993
The standard state space solutions to the H∞ control problem for linear time invariant systems are generalized to nonlinear time-invariant systems.
Doyle, John C., Lu, Wei-Min
core  

Unraveling the Molecular Mechanisms of Glioma Recurrence: A Study Integrating Single‐Cell and Spatial Transcriptomics

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Glioma recurrence severely impacts patient prognosis, with current treatments showing limited efficacy. Traditional methods struggle to analyze recurrence mechanisms due to challenges in assessing tumor heterogeneity, spatial dynamics, and gene networks.
Lei Qiu, Yinjiao Fei, Jiaxuan Ding, Kexin Shi, Jinyan Luo, Yuchen Zhu, Xingjian Sun, Gefei Jiang, Yuandong Cao, Weilin Xu, Shu Zhou   +10 more
wiley   +1 more source

Brainstem and Cerebellar Volume Loss and Associated Clinical Features in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Progressive Supranuclear Palsy (PSP) is a neurodegenerative ‘tauopathy’ with predominating pathology in the basal ganglia and midbrain. Caudal tau spread frequently implicates the cerebellum; however, the pattern of atrophy remains equivocal.
Chloe Spiegel, Timothy P. Siejka, Cassandra Marotta, Josh J. Y. Lee, Kelly Bertram, Terence J. O'Brien, Meng Law, Lucy Vivash, Ian H. Harding   +8 more
wiley   +1 more source

Enhanced precision in robot arm positioning: A nonlinear damping approach for flexible joint manipulators

IET Control Theory & Applications
This article introduces an advanced nonlinear controller designed for optimizing the performance of a single‐link robot arm featuring a flexible joint.
Amir Hossein Jafari, Rached Dhaouadi, Reza Jafari   +2 more
doaj   +1 more source

Optimal Control of Nonlinear Multivariable Systems [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2009
This paper concerns a study on the optimal control for nonlinear systems. An appropriate alternative in order to alleviate the nonlinearity of a system is the exact linearization approach.
Ali Qajar, Ramin Bozorgmehry Boozarjomehry,   +1 more
doaj  

Symbolic models for nonlinear control systems affected by disturbances

, 2012
In the last few years there has been a growing interest in the use of symbolic models for the formal verification and control design of purely continuous or hybrid systems.
Borri, Alessandro, Di Benedetto, Maria Domenica, Pola, Giordano   +2 more
core   +1 more source

Robust Adaptive Control Barrier Functions: An Adaptive & Data-Driven Approach to Safety (Extended Version)

, 2020
A new framework is developed for control of constrained nonlinear systems with structured parametric uncertainties. Forward invariance of a safe set is achieved through online parameter adaptation and data-driven model estimation.
How, Jonathan P., Lopez, Brett T., Slotine, Jean-Jacques E.   +2 more
core   +1 more source

Synthesis for Constrained Nonlinear Systems using Hybridization and Robust Controllers on Simplices [PDF]

, 2011
In this paper, we propose an approach to controller synthesis for a class of constrained nonlinear systems. It is based on the use of a hybridization, that is a hybrid abstraction of the nonlinear dynamics.
Girard, Antoine, Martin, Samuel
core   +3 more sources

Fluid Biomarkers of Disease Burden and Cognitive Dysfunction in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Identifying objective biomarkers for progressive supranuclear palsy (PSP) is crucial to improving diagnosis and establishing clinical trial and treatment endpoints. This study evaluated fluid biomarkers in PSP versus controls and their associations with regional 18F‐PI‐2620 tau‐PET, clinical, and cognitive outcomes.
Roxane Dilcher, Charles B. Malpas, Stuart J. McDonald, William T. O’Brien, Craig Despott, Kelly L. Bertram, Matthew P. Pase, Lukas Frontzkowski, Meng Law, Terence J. O’Brien, Lucy Vivash   +10 more
wiley   +1 more source

Geometric numerical integration of nonholonomic systems and optimal control problems [PDF]

, 2002
A geometric derivation of numerical integrators for nonholonomic systems and optimal control problems is obtained. It is based in the classical technique of generating functions adapted to the special features of nonholonomic systems and optimal control ...
de Diego, D. Martin, de Leon, M., Merino, A. Santamaria   +2 more
core   +2 more sources