Results 11 to 20 of about 137,684 (276)

Modeling the Effects of Drift Orbit Bifurcation on the Magnetopause Shadowing Loss of Radiation Belt Electrons

open access: yesGeophysical Research Letters, 2023
Last closed drift shell (LCDS) has been identified as a crucial parameter for investigating the magnetopause shadowing loss of radiation belt electrons.
Jinbei Huang   +4 more
doaj   +1 more source

State Space Disturbance Observer Considering Residual Disturbance

open access: yesIEEE Access, 2020
This paper presents a novel disturbance observer (DOB) for overcoming the limitation of uniformly bounded stability in existing DOB-based control systems and to attain asymptotic stability.
Seungkyu Park, Tae Sung Yoon
doaj   +1 more source

Disturbance Observer-Based Control to Guarantee a Sliding Mode Without Sliding Mode Control

open access: yesIEEE Access, 2023
This paper presents a novel disturbance observer (DOB)-based control method to prevent the deterioration of transient response due to disturbances. The proposed method uses sliding mode dynamics without a sliding mode control (SMC) structure and does not
Keonwoo Lee, Jaejun Cha, Seungkyu Park
doaj   +1 more source

Gradient-Descent-Based Learning Gain for Backstepping Controller and Disturbance Observer of Nonlinear Systems

open access: yesIEEE Access, 2023
This paper proposes a gradient-descent-based learning (GL) gain for backstepping controller and disturbance observer (DOB) of nonlinear system. The proposed method consists of the GL gain update law, controller, and DOB.
Sesun You   +3 more
doaj   +1 more source

Induction motor IFOC based speed-controlled drive with asymptotic disturbance compensation [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2012
This paper presents the design of digitally controlled speed electrical drive, with the asymptotic compensation of external disturbances, implemented by using the IFOC (Indirect Field Oriented Control) torque controlled induction motor.
Stojić Đorđe M., Stojić Milić R.
doaj   +1 more source

An extensive survey of the estimation of uncertainties from missing higher orders in perturbative calculations [PDF]

open access: yes, 2014
We consider two approaches to estimate and characterise the theoretical uncertainties stemming from the missing higher orders in perturbative calculations in Quantum Chromodynamics: the traditional one based on renormalisation and factorisation scale ...
Bagnaschi, Emanuele   +3 more
core   +2 more sources

Beta-1 adrenergic agonist treatment mitigates negative changes in cancellous bone microarchitecture and inhibits osteocyte apoptosis during disuse. [PDF]

open access: yesPLoS ONE, 2014
The sympathetic nervous system (SNS) plays an important role in mediating bone remodeling. However, the exact role that beta-1 adrenergic receptors (beta1AR) have in this process has not been elucidated.
Joshua M Swift   +3 more
doaj   +1 more source

Vascular reconstruction of the decellularized biomatrix for whole-organ engineering—a critical perspective and future strategies

open access: yesFrontiers in Bioengineering and Biotechnology, 2023
Whole-organ re-engineering is the most challenging goal yet to be achieved in tissue engineering and regenerative medicine. One essential factor in any transplantable and functional tissue engineering is fabricating a perfusable vascular network with ...
Santosh Gupta   +6 more
doaj   +1 more source

A safety analysis approach to clinical workflows : application and evaluation [PDF]

open access: yes, 2014
Clinical workflows are safety critical workflows as they have the potential to cause harm or death to patients. Their safety needs to be considered as early as possible in the development process.
Al-Qora’n, Lamis   +4 more
core   +1 more source

Performance‐enhanced iterative learning control using a model‐free disturbance observer

open access: yesIET Control Theory & Applications, 2021
This paper proposes a novel performance‐enhanced iterative learning control (ILC) scheme using a model‐free disturbance observer (DOB) to achieve high performance for precision motion systems that encounter non‐repetitive disturbances.
Min Li   +5 more
doaj   +1 more source

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