Search

Your search keyword '"coupling estimation"' showing total 2 results
Start Over Descriptor "coupling estimation"
2 results on '"coupling estimation"'

1. Adaptation of the method of coupling analysis based on phase dynamics modeling to EEG signals during an epileptic seizure in comatose patients

Author

Navrotskaya, Elena Vladimirovna, Karavaev, Anatoly Sergeevich, Sinkin, Mikhail V., Borovkova, Ekaterina Igorevna, and Bezruchko, Boris Petrovich

Subjects
eeg, epilepsy, coma, phase, phase dynamics modeling, coupling estimation, coupling direction, statistical significance, time series analysis, mean phase coherence, Physics, QC1-999
Abstract

Background and Objectives: the coupling of EEG signals during an epileptic seizure in patients during coma is being studied. Materials and Methods: the analysis of the applicability of the method of detecting the interaction between oscillatory systems based on the phase dynamics modeling to EEG signals during an epilepsy seizure in comatose patients is carried out. Results: a method of preliminary filtering of EEG signals has been proposed and the values of the method parameters have been selected, which allow obtaining reliable estimates of directional coupling at a significance level of 0.05. As an example, the analysis of the couplings between EEG signals of two patients with the mentioned pathologies was carried out using the method of the coupling estimation developed in this work.

Published
2022
Full Text
View/download PDF

2. Optimal Excitation of Multi-transmitter Wireless Power Transfer System without Receiver Sensors

Author

Prasad Jayathurathnage, Fu Liu, Department of Electronics and Nanoengineering, Aalto-yliopisto, and Aalto University

Subjects
010302 applied physics, Physics, business.industry, 020208 electrical & electronic engineering, Transmitter, Electrical engineering, Coupling estimation, 02 engineering and technology, Function (mathematics), 01 natural sciences, Multiple transmitter, Power (physics), Position (vector), Electromagnetic coil, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Wireless power transfer, business, Excitation, Voltage
Abstract

openaire: EC/H2020/736876/EU//VISORSURF The optimal excitation of multi-transmitter wireless power transfer systems is dependent on the position of the receiver (Rx), To maximize the output power and efficiency, the transmitter (Tx) coils closer to the Rx should have higher currents compared to the ones farther away. This paper presents a simple approach to determine the optimal excitation of individual Tx without using any measurement at the Rx side. The Tx coils are arranged to be uncoupled from adjacent Tx coils. In this configuration, the optimal current distribution in each Tx coil is a function of the mutual inductances of each Tx-Rx coil pair, which can be evaluated by analyzing the voltage measurements at Tx coils. The proposed approach is experimentally verified using a laboratory prototype.

Published
2019
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results