Results 281 to 290 of about 2,419,199 (329)
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Sensorless Control Scheme for PMSM Drive via Generalized Proportional Integral Observers and Kalman Filter

IEEE transactions on power electronics
Since conventional linear extended state observer (LESO) can only cope with the zero-order disturbance, the sensorless control scheme based on LESO lacks the ability to accurately estimate the back electromotive force (BEMF), and the estimation accuracy ...
Ke Yu, Shihua Li, Wenwu Zhu, Zuo Wang
semanticscholar   +1 more source

Asymptotic Rejection of General Periodic Disturbances

2005 International Conference on Control and Automation, 2005
This paper deals with asymptotic rejection of general periodic disturbances in nonlinear systems. A novel approach based on integrations over the half of disturbance period is proposed to estimate disturbances which may not be harmonic or even smooth. The proposed algorithm uses the period and the knowledge of the basic disturbance patterns, while the ...
openaire   +1 more source

A Generalized Error Component Model with Heteroscedastic Disturbances

International Economic Review, 1988
This paper generalizes the one-way error component model from the homoskedastic to the heteroskedastic case. Unlike P. Mazodier and A. Trognon's (1978) heteroskedastic two-way error component model, an explicit form for V11/2 is obtained that allows the computation of generalized least squares as a simple modification of J. A.
Baltagi, Badi H, Griffin, James M
openaire   +1 more source

Emotional Disturbance in Newly Registered General Practice Patients

British Journal of Psychiatry, 1978
The General Health Questionnaire has had some popularity as an index of minor psychiatric morbidity and was used in the present study to ascertain the emotional state of newcomers to a practice in a new town. High scorers on the GHQ had more episodes of illness, had more severe ratings of psychological problems, and were more likely to receive a formal
C M, Corser, A E, Philip
openaire   +2 more sources

Tropical disturbances and the general circulation

Quarterly Journal of the Royal Meteorological Society, 1972
AbstractThe role of the Tropics in the general circulation of the atmosphere is discussed, with emphasis on the rising branch of the Hadley cell. The rising motion takes place largely in organized tropical disturbances and in the Intertropical Convergence Zone.
openaire   +1 more source

General Three‐Dimensional Disturbances to Inviscid Couette Flow

Studies in Applied Mathematics, 1991
The general solution to the linearized equations governing three‐dimensional disturbances to inviscid Couette flow has been obtained. This result extends the Orr solution to initial conditions that do not consist of a single Fourier sine component in the cross‐stream coordinate and a plane wave in the streamwise/spanwise coordinates. The time evolution
Criminale, W. O., Long, Bruce, Zhu, Mei
openaire   +2 more sources

DEG: A Disturbance Event Generator for GCBM

2018
This document describes a disturbance event generator (DEG) software framework and prototype implementation, which generates spatially explicit disturbance input data for the GCBM carbon budget simulation model.
openaire   +1 more source

Improved ADRC With a Cascade Extended State Observer Based on Quasi-Generalized Integrator for PMSM Current Disturbances Attenuation

IEEE Transactions on Transportation Electrification
Traditional active disturbance rejection control (ADRC) is not adequately capable to deal with current disturbances, including periodic harmonics of permanent magnet synchronous motor (PMSM). Thus, an improved ADRC with a cascade extended state observer (
Haiyang Cao   +6 more
semanticscholar   +1 more source

Offset-free IMC with generalized disturbance models

at - Automatisierungstechnik, 2020
G. Pannocchia, W. Heath
semanticscholar   +1 more source

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