Results 291 to 300 of about 2,419,199 (329)

Design and stability analysis of a generalized reduced-order active disturbance rejection controller

Science China Technological Sciences, 2021
Yongshuai Wang, Zengqiang Chen, Mingwei Sun, Qinglin Sun   +3 more
semanticscholar   +1 more source

Sleep disturbances in general practice.

Proceedings of the Royal Society of Medicine, 1969
DR DAVID WHEATLEY DISCUSSES THE VARIATIONS OF INDIVIDUAL SLEEP REQUIREMENTS, AND CLASSIFIES FIVE MAIN CAUSES OF INSOMNIA: physical, physiological, psychological, iatrical and idiopathic. The various aspects of treatment are discussed and the use of sedative drugs illustrated.Dr Ian Oswald describes the two types of sleep, paradoxical and orthodox, and ...
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Adaptive Conditional Disturbance Negation-Based Nonsmooth-Integral Control for PMSM Drive System

IEEE/ASME transactions on mechatronics
Disturbances of the permanent magnet synchronous motor (PMSM) drive system are usually observed and fully compensated to improve the robustness in existing two-degrees-of-freedom control schemes. However, these schemes neglect the potential advantages of
Jinlin Sun, Sicong Xu, Shihong Ding, Zhiqiang Pu, Jianqiang Yi   +4 more
semanticscholar   +1 more source

Matching to Environment Generating Persistent Disturbances

2005
This chapter considers the design of matched systems that are subject to persistent disturbances limited in both magnitude and rate of change. A computational method, that uses convex optimisation, for computing the approximate supremum absolute value of each output is presented.
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Variable Form LADRC-Based Robustness Improvement for Electrical Load Interface in Microgrid: A Disturbance Response Perspective

IEEE Transactions on Industrial Informatics
As the cornerstone of adjusting microgrid output, the electrical load interface unit is difficult to continuously output desired dynamics under various uncertainties.
Long Tao, Ping Wang, Xiaoyong Ma, Yifeng Wang, X. Zhou   +4 more
semanticscholar   +1 more source

Unified Interpretation of Active Disturbance Rejection Control for Electrical Drives

IEEE Transactions on Circuits and Systems - II - Express Briefs
Variable structure active disturbance rejection control (ADRC), represented by generalized ADRC (GADRC) and cascaded ADRC (CADRC), has attracted extensive attention due to its superior disturbance rejection performance.
Haiyang Cao, Yongting Deng, Yuefei Zuo, Hongwen Li, Jianli Wang, Xiufeng Liu, Christopher H. T. Lee   +6 more
semanticscholar   +1 more source

Position Precision Control of Magnetic Levitation Systems Based on Generalized Multiple Disturbances Estimation and Compensation

IEEE Transactions on Automation Science and Engineering
This paper presents a generalized multiple disturbances estimation and compensation based position precision control of maglev systems, especially for the estimation and compensation of the unknown periodic disturbance.
Jun-xiao Wang, Qinkun Lu, Qinchen Jiang, Jun Yang   +3 more
semanticscholar   +1 more source

Reinforcement Learning-Based Output Stabilization Control for Nonlinear Systems With Generalized Disturbances

International Conference on Industrial Technology
This paper proposes a new disturbance observer (DO)-based reinforcement learning (RL) control approach for nonlinear systems with unmatched (generalized) disturbances.
Zezhi Tang, J. A. Rossiter, Yi Dong, G. Panoutsos   +3 more
semanticscholar   +1 more source

[Olfaction disturbances in general ORL practice].

Acta otorrinolaringologica espanola, 2003
Analysis of smell disturbances in the ENT outpatients department of in a General Hospital. A retrospective and descriptive study. We include all patients with olfactory alterations as the main reason for consultation. The sample was 38 patients. Viral, postraumatic, toxic, drug-induced and inflammatory. We performed anamnesis, nasal endoscopic and scan
A, Toledano Muñoz, E, González, C, Herráiz Puchol, G, Plaza Mayor, M A, Mate Bayón, J M, Aparicio Fernández, G, De los Santos Granados, A N, Galindo Campillo   +7 more
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Internal Solitons Generated by Moving Disturbances

1986
A new phenomenon of the generation of internal solitons is investigated in this thesis by applying theoretical models and is observed in both numerical and experimental results. By imposing an external disturbance, such as a top surface pressure or a bottom bump, that moves with a constant velocity within a trans critical range after an impulsive start
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