نتایج جستجو برای: impedance point

تعداد نتایج: 558549  

Journal: :Journal of Physics A: Mathematical and General 2006

Journal: :The Journal of the Acoustical Society of America 1962

Journal: :Journal of Integral Equations and Applications 2010

Journal: :journal of medical signals and sensors 0
houman mirzaalian dastjerdi ramin soltanzadeh hossein rabbani

studies show that any complications including hemorrhage, lack of blood supply, lack of oxygen supply, and death of cells in a tissue, will have a clear effect on electrical properties of that tissue. thus, by measuring impedance of a set of tissues, potential problems of the damaged tissue may be found. since electrical impedance is closely related to the measuring frequency, obviously, every ...

In this note, we show that the impedance control strategy proposed in the paper is not feasible from practical implementation point of view. Next, a robust impedance controller is proposed for electrically driven robots using Fourier series (FS). The fact that robots' actuators have limited voltage is also considered in controller design procedure. In comparison with other impedance controllers...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

Journal: :IEEE Transactions on Systems, Man, and Cybernetics - Part A: Systems and Humans 1999

2017
Tiankui Sun Zhimin Li Shuang Rong Jian Lu Weixing Li Chunhua Liu

This paper discusses the effect of load change on the Thevenin equivalent impedance of power systems. In this paper, the Thevenin equivalent impedance influenced by the derivative of active load with respect to reactive load (dP/dQ) is analyzed. The Thevenin equivalent impedance forms a closed curve in a complex plane and shrinks to one point when voltage collapses. The magnitude of the Theveni...

Journal: :Transactions of the Society of Instrument and Control Engineers 1994

Journal: :Progress In Electromagnetics Research B 2008

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