نتایج جستجو برای: electric variable measurement

تعداد نتایج: 819714  

2001
Michael B. RADUNSKY Richard J. SAYKALLY

High resolution (Doppler-resolved) measurement of Doppler-shifted ion absorption frequencies allows the determination of the electric field responsible for the shift. A new method based on velocity modulation laser spectroscopy is described for the nonperturbative measurement of the axial electric fields in glow discharges. The A ‘n, + X I&+ (4.0 ) band of NT has heen used as a probe of a He/N,...

Journal: :Cyberpsychology & behavior : the impact of the Internet, multimedia and virtual reality on behavior and society 2008
Michiel J. A. Jannink C. Victorien Erren-Wolters Alexander C. de Kort Herman van der Kooij

This paper describes an electric scooter simulation program and a first evaluation study in which we explored if it is possible to train the driving skills of future users of electric mobility scooters by means of an electric scooter simulation program in addition to conventional electric scooter training. Within this explorative study,10 stroke survivors were randomly assigned to either the co...

2013
Zheng Chen Chunting Chris Mi Yuhong Fu Jun Xu Xianzhi Gong

State of health (SOH) of batteries in electric and hybrid vehicles can be observed using some battery parameters. Based on a resistanceecapacitance circuit model of the battery and data obtained from abundant experiments, it was observed that the diffusion capacitance shows great correlation with SOH of a lithium-ion battery. However, accurate measurement of this diffusion capacitance in real t...

2011
S. Caorsi E. Bermani A. Massa

In this paper, a finite element method, based on a boundary value approach, for the evaluation of the electric field distribution in exposed biological phantoms is presented. Starting from the measurement of the electric field around the phantom, the field prediction is obtained by solving a boundary value problem. This allows to avoid the description of the electromagnetic source and the estim...

Journal: :نشریه دانشکده فنی 0
حسن منصف طاهر قمیان

there are fewer problems encountered with optical voltage transducers in comparison with their inductive and capacitive counterparts. although capacitive and inductive transformers are used vastly for the purpose of measurement and protection in the networks, they cause problems such as core saturation and improper transient responses which decrease the accuracy of measurement and eficiency of ...

2014
Matti Liukkonen Ari Hentunen Jussi Suomela

This paper presents efficiency analysis of the power buffering in common voltage bus systems. Operation of the power buffering is briefly described with the power control experiments. The efficiency measurement setup and performed measurements from the charging and discharging events of the ultracapacitor module with the dc-dc converter are presented. As a result, the efficiency map of the dc-d...

2011
Mark J. Balas Qian Li

A new control problem called Disturbance Tracking Control (DTC), which arises in active control of variable speed horizontal axis wind turbines for electric power generation, was developed previously. Feedback control of a linear plant, which is persistently disturbed, must cause the plant output to track a linear function of the disturbance. This control theory is related to Tip Speed Ratio Tr...

2005
Cecilia Forssén Hans Edin

Partial discharges are localized electric discharges that do not bridge the electrodes. For high voltage components measurements of partial discharges are commonly used to diagnose the condition of the insulation system. Traditionally partial discharges are measured at a single frequency of the applied voltage. However the rather newly developed technique of Variable Frequency Phase Resolved Pa...

2006
E. M. Rehder P. Rice K. S. Stevens C. R. Lutz

Photoreflectance (PR) is an optical measurement technique used to study material properties and device structures. It is uniquely able to non-destructively measure electric fields within devices. Some device structures such as HBTs have a rough highly doped InGaAs surface layer. In some cases the surface roughness is sufficient to produce light scattering that impedes optical measurements such ...

Journal: :Proceeding of the Electrical Engineering Computer Science and Informatics 2014

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