Results 71 to 80 of about 2,619 (292)

An analysis of the benefits of signal injection for low-speed sensorless control of induction motors

open access: yes, 2015
We analyze why low-speed sensorless control of the IM is intrinsically difficult, and what is gained by signal injection. The explanation relies on the control-theoretic concept of observability applied to a general model of the saturated IM.
Combes, Pascal   +3 more
core   +3 more sources

Speed estimators using stator resistance adaptation for sensorless induction motor drive [PDF]

open access: yes, 2016
The paper describes speed estimators for a speed sensorless induction motor drive with the direct torque and flux control. However, the accuracy of the direct torque control depends on the correct information of the stator resistance, because its value ...
Brandštetter, Pavel   +3 more
core   +2 more sources

Robust Modulated Model Predictive Control for PMSM Using Active and Virtual Twelve-Vector Scheme with MRAS-Based Parameter Mismatch Compensation

open access: yesWorld Electric Vehicle Journal
Modulated twelve-voltage-vector model predictive current control (MPCC), which applies two or three voltage vectors per control period, exhibits superior steady-state performance compared to modulated six-active-voltage-vector MPCC and conventional MPCC.
Mahmoud Aly Khamis   +3 more
doaj   +1 more source

A critical reappraisal of the carotid sinus and carotid bulb: Distinguishing neurohistological function from vascular geometry

open access: yesThe Anatomical Record, EarlyView.
This review redefines the carotid bulb (CB) as a variable geometric dilation shaped by hemodynamics and the carotid sinus (CS) as a conserved neurohistological baroreceptor field. Distinguishing these entities clarifies a century of anatomical confusion and links geometry, neurohistology, and clinical interpretation within a unified framework ...
Răzvan Costin Tudose   +2 more
wiley   +1 more source

Robust global sliding model control for water-hull-propulsion unit interaction systems - part 2: model validation [PDF]

open access: yes, 2015
Unexpected severe hull deformation caused by wave loads poses alignment problem to the propulsion shaft line in large scale ships, which would significantly influence the dynamical performance of the marine propulsion system.
Cheng, Kai   +4 more
core   +3 more sources

Clinical Physical Exam Shows High Sensitivity for Detecting Labral Tears in Individuals With Femoroacetabular Impingement Syndrome

open access: yesArthroscopy, EarlyView.
Purpose To determine the diagnostic performance of the combined use of radiographs and physical exam findings, compared with magnetic resonance arthrography (MRA) alone, for the primary diagnosis of labral tears in individuals with femoroacetabular impingement syndrome.
Carson Halliwell   +4 more
wiley   +1 more source

Measuring what matters: Evaluating the impact of curriculum decolonisation initiatives in UK business schools

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Curriculum decolonisation has become a prominent feature of equity agendas in UK higher education, yet there remains limited empirical and theoretical work on how such initiatives are evaluated, particularly within business schools. This paper presents one of the first multi‐institutional empirical studies examining how UK business schools ...
Sally Everett   +2 more
wiley   +1 more source

Zero Deforestation Commitments and Industry 4.0 Enabling Technologies: An Analysis of Their Role in Mitigating Deforestation

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study examines the role of corporate zero‐deforestation commitments (ZDCs) and Industry 4.0 (I4.0) enabling technologies in mitigating deforestation. Drawing on data from 110 companies included in the Forest 500 dataset, the research explores whether sustainability commitments and digital innovation influence firms' deforestation ...
Valentina Beretta   +2 more
wiley   +1 more source

Sustainability Orientation and Sustainable Innovation: Can Organisational Resilience Clarify the Missing Link?

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Although firms that integrate a sustainability orientation (SO) may experience a significant improvement in their resource efficiency, many, particularly small‐ and medium‐sized enterprises (SMEs), still struggle with the complexities of incorporating sustainability into their business models.
Michael Adu Kwarteng   +3 more
wiley   +1 more source

Real time implementation of adaptive sliding mode observer based speed sensor less vector control of induction motor [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2010
Sensor less induction motor drives are widely used in industry for their reliability and flexibility. However, rotor flux and speed sensors are required for vector control of induction motor.
Negadi Karim   +2 more
doaj   +1 more source

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