Autor: Lowther, D. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: A novel adaptation approach for electromagnetic device optimization
Autorzy:: Ouyang, J.
Lowther, D.
Tematy:: wnioskowanie na podstawie przykładów
adaptacja przypadku
sieć semantyczna
urządzenia elektromagnetyczne
optymalizacja
case-based reasoning
case adaptation
semantic networks
electromagnetic devices
optimization; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/140348.pdf Link otwiera się w nowym oknie
Opis:: The ability of case-based reasoning systems to solve new problems mainly depends on their case adaptation knowledge and adaptation strategies. In order to carry out a successful case adaptation in our case-based reasoning system for a low frequency electromagnetic device design, we make use of semantic networks to organize related domain knowledge, and then construct a rule-based inference system which is based on the network. Furthermore, based on the inference system, a novel adaptation algorithm is proposed to derive a new device case from a real-world induction motor case-base with high dimensionality.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Towards a case-based computational model for the creative design of electromagnetic devices
Autorzy:: Ouyang, J.
Lowther, D.
Tematy:: wnioskowanie na podstawie przykładów
kreatywność
model obliczeniowy
urządzenia elektromagnetyczne
Case-Based Reasoning (CBR)
creativity
computational model
electromagnetic device; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/140356.pdf Link otwiera się w nowym oknie
Opis:: In order to explore creativity in design, a computational model based on Case-Based Reasoning (CBR) (an approach to employing old experiences to solve new problems) and other soft computing techniques from machine learning, is proposed in this paper. The new model is able to address the four challenging issues: generation of a design prototype from incomplete requirements, judgment and improvement of system performance given a sparse initial case base library, extraction of critical features from a given feature space, adaptation of retrieved previous solutions to similar problems for deriving a solution to a given design task. The core principle within this model is that different knowledge from various level cases can be explicitly explored and integrated into a practical design process. In order to demonstrate the practical significance of our presented computational model, a case-based design system for EM devices, which is capable of deriving a new design prototype from a real-world device case base with high dimensionality, has been developed.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Global and distributed torque calculations using the CDSA approach
Autorzy:: Li, M.
Lowther, D.A.
Tematy:: moment obrotowy
analiza wrażliwości
maszyna elektryczna
torque calculation
distributed torques
sensitivity analysis
electrical machines; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/140380.pdf Link otwiera się w nowym oknie
Opis:: Accurate force and torque calculations are fundamental to being able to predict the operation of an electromechanical device or system. The Maxwell stress tensor and the virtual work principle are the two major theories for force and torque calculation. However, if local distributions of torque are needed to couple to structural and vibration analyses, the conventional Maxwell stress approach cannot provide this easily. A recently developed approach based on sensitivity analysis has the capability to deliver local stress and torque as well as accurate global results. In addition, this approach divides the total torque into different components which are essential to the design of electrical devices. This paper includes several numerical examples of torque calculations of different electrical machines. The results are verified by a commercial software package using the Maxwell stress based force calculation.
Dostawca treści:: Biblioteka Nauki

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