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A control strategy of a permanent magnet synchronous motor for an electric vehicle

Xie Jianxin, Liu Zimeng

Journal of Theoretical and Applied Mechanics

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2022

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Vol. 60 nr 4

673--685

EN

The traditional modulation method of the inverter in a permanent magnet synchronous mo- tor (PMSM) is lengthy and computationally intensive. Based on this, a simplified sinusoidal pulse width modulation method is proposed. In this method, voltage space vectors in each sector are synthesized, and the sector in which the synthesized vector is located is determined by the rotation angle of the resultant vector, and then the acting time of the basic vector is calculated by the voltage difference of the phase voltage. The problem of trigonometric functions and coordinate conversion is not involved in the whole calculation process, the calculation model is simple, and it is easy to realize digitization. Mathematical modeling is carried out by using the simulation software Matlab, and the correctness of the calculation method after optimization is verified, which provides an idea for the later research of the inverter modulation method.

2

Mediacja : formą zarządzania konfliktem

Stępień J.

Nowoczesne Systemy Zarządzania

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2017

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T. 12, nr 2

107--116

PL

W artykule poruszono problematykę mediacji jako formy zarządzania konfliktem. W polskim systemie prawnym, jak również w dziedzinie zarządzania, mediacji przypisuje się coraz to szersze znaczenie, gdyż w odróżnieniu od innych form rozwiązywania sporów, ma ona charakter ugodowy. Celem artykułu jest podkreślenie specyfiki komunikacji i występujących w organizacji konfliktów oraz zaprezentowanie mediacji, jako alternatywnej metody ich rozwiązywania.

EN

The article consists of two chapters, introduction and summary. It deals with mediation as a form of conflict management. Increasing importance is being attached to mediation both in polish legal system and business management as contrary to other forms of conflict resolution it is a conciliatory method. The article aims to emphasise characteristics of communication and conflicts occurring in organization as well as present mediation as an alternative method of conflict resolution.

3

Relating Concrete Defeasible Reasoning Formalisms and Abstract Argumentation

Maher M. J.

Fundamenta Informaticae

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2017

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Vol. 155, nr 3

233--260

EN

There are a wide variety of formalisms for defeasible reasoning that can be seen as implementing concrete argumentation on defeasible rules. However there has been little work on the relationship between such languages and Dung’s abstract argumentation. In this paper we identify two small fragments of defeasible rule languages on which many concrete defeasible formalisms agree. The two fragments are closely related, as we show. Both arise as ways to express abstract argumentation frameworks in the concrete formalisms. Using these fragments, we establish a close relationship between abstract argumentation under semantics based on complete extensions, and ambiguity blocking logics in the framework of Antoniou et al. These results support a uniform approach to deriving complexity lower bounds for defeasible formalisms, where a lower bound is established for abstract argumentation and can then be extended “for free” to corresponding concrete defeasible formalisms.