This simple measurement method of distortion analysis of magnetic excitation (DAME) voltage reveals the good potential for various applications such as evaluation of heat treatment, depth of case ...sp.info (PDF) Distortion analysis of magnetic excitation – a novel ...The distortion analysis of magnetic excitation (DAME) method has been recently proposed to facilitate magnetic measurements for non-destructive testing in which pick-up coils are not necessary.sp.info Distortion Analyzer – a New Tool for Assessing and ...nonlinear system producing additional distortion components in the output signal [1 – 17]. To assess the nonlinear behavior quantitatively we usually apply spectrum analysis to evaluate the harmonic or intermodulation components in the output signal for multi-tone excitation input.sp.info Distortion in a Flux Pump-Integrated HTS Generatordesign improvisation, a finite element analysis (FEA) model of the 10 kW HTS generator is developed, and time-stepped magnetic transient simulations are conducted on the 2D model. The effects of stator yoke material, winding pitch factors, and load configurations on …
magnetic flux travels between the overlapping laminations of yokes and limbs due to presence of air gaps at the joints. The magnetic flux passes to next layer of laminations when it meets high reluctance air gap. When these laminations are saturated, flux crosses the air gaps. This flux distortion causes additional localized losses. Fig.3.sp.info US9322892B2 - System for magnetic field distortion ...A system and method for magnetic field distortion compensation includes a cryostat for a magnetic resonance imaging (MRI) system. The cryostat includes a vacuum casing having a vacuum therein. A cryogen vessel is disposed within the casing, the vessel having a coolant therein. A thermal shield is disposed between the vacuum casing and the cryogen vessel.sp.info AES E-Library » Distortion Analyzer-A New Tool for ...Feb 01, 2000 · The dominant nonlinear distortions in loudspeakers, headphones, and other actuators are predictable and closely related to the general principle, particular design, materials, and assembling techniques applied to the transducer. The distortion analyzer uses novel system identification techniques to measure the large signal parameters of the expanded loudspeaker model, the …sp.info Fraunhofer IWU - Acoustical Engineeringmagnetic circuit of electric machines represent an essential mechanism of excitation of noise and vibrations. The noise radiation of the machine can be significantly reduced by magnetic circuit optimization or by the machine control. Moreover, the torque ripple of the drive can also be reduced as well as the resulting bearing reaction forces.
Assembling Generator End-of-Line Testing Defect Classification Amendment Fig. 1. Quality control at the end of the assembly line Modern end-of-line testing (EOL) which satisfies those requirements is a complex process, as illustrated in Fig. 1. This chapter can only give a general overview on essential components, their interactions and future ...sp.info A new practical model of an objective lens with assembling ...Mar 01, 2011 · As the magnetic flux density varies non-linearly with increase in the magnetic field intensity in the saturated lens, Eq. are a set of similar non-linear, algebraic equations inter-relating the potentials at adjacent mesh points, which can be solved iterativel In order to improve the precision of the simulation, the B–H magnetization curves of the lens materials are measured and shown in Fig. 2.sp.info (PDF) Homopolar generators: An overview | Carlo Concari ...The voltage (emf) generated by a disk homopolar generator is given by the relationship: u0002 r2 emf = B (r)ωrd r (1) r1 where r1 is the shaft radius, r2 the disc radius, B the magnetic ﬂux density and ω the angular velocity. The e.m.f. generated by the machine is limited by the rotating speed ω Fig. 3.sp.info Wolfgang Klippelphase with frequency. This kind of signal distortion is independent of the amplitude of the stimulus and describes the small signal behaviour of loudspeakers. At higher amplitudes non-linear distortions are generated. These comprise new spectral components at multiples and combinations of the excitation frequencies. Measurement techniques assessing
rotor excitation HTS machine. Also, the effects of rotor relative positions of the proposed machine on the back electromotive force are discussed. By using ﬁnite-element analysis, the machine performances are analyzed. Hence, the validity of the proposed machine is veriﬁed. Index Terms—Axial-ﬁeld ﬂux-switching machine, coolingsp.info Performance Analysis of a PMSG Based Wind Energy ...produce a magnetic field in a rotor winding. The direct current in the rotor field winding is fed through a slip ring assembly or it provided by a brush less exciter. Permanent magnet generators do not require a DC supply for the excitation circuit and it have high efficiency andsp.info Applicationsapplications, including high frequency transformers, chokes, and other magnetic circuit elements. POT CORE ASSEMBLY A ferrite pot core assembly includes the following items: 1. TWO MATCHED POT CORE HALVES 2. BOBBIN ON WHICH THE COILS ARE WOUND 3. TUNING ASSEMBLY 4. A CLAMP FOR HOLDING THE CORE HALVES TOGETHERsp.info (PDF) Experimental Investigation of Parameters Influencing ...His main interests are related to the experimental and parameters are classified into six categories: (1) annealing numerical analysis of transformers. process, (2) mechanical process, (3) operating conditions, (4) magnetic material, (5) assembly process, and (6) …
Jun 05, 2015 · Quadrupolar echo NMR spectroscopy of solids often requires RF pulse excitation that covers spectral widths exceeding 100 kHz. In a recent work we found out that a four pulse, composite pulse COM-II ( 90 180 ¯ 90 135 ¯ 45), provided robust broadband excitation for deuterium quadrupolar echo spectroscopy.Moreover, when combined with an eight step phase cycle, spectral distortions …sp.info Design, analysis, and construction of a small scale self ...Dec 01, 2010 · This paper has dealt with the design, analysis and construction of a small SEIG using empirical rules together with a finite element analysis in order to improve power quality and efficiency. The parameters, core loss, magnetic flux distribution have been determined by …sp.info CN104116578B - A kind of method of 4D printing shaping ...The invention discloses a kind of method of 4D printing shaping artificial blood vessel bracket, comprise the following steps: 1) using shape-memory polymer or marmem as deformable material unit, using polymeric material or metal material as matrix material unit, design intravascular stent initial configuration; 2) adopt melting straight forming method by deformable material unit and matrix ...sp.info Electronic Structure of Aqueous Co[bpy3 Electron …distortion. Figure 2 presents the experimental Co L-edge (Figures 2a, 2c) and N K-edge (Figures 2b, 2d) PFY-XAS spectra of 100 mM [Co(bpy) 3] 2+ and 200 mM [Co(bpy) 3] 3+ aqueous solutions. All spectra are obtained by integrating the individual RIXS spectra signal intensities as a function of excitation photon energy; the
Apr 28, 2018 · where E c0 is the characteristic electric field equal to 1 μ V.cm − 1,J c is the critical current density, J c0 is the critical current density in the self-field at 77 K, B 0 is the E-J power law field dependency factor in order to model the magnetic field dependency of J c, and n is the I-V characteristic power factor which is in the range of 5 to 35, typically.sp.info A Doubly-Fed Permanent Magnet Generator for Wind …Analysis of the steady state and dynamic behavior of the machine is detailed, and a control ... also be low-distortion adds further to the cost. 1.1.3 Doubly-fed Generators The doubly-fed induction generator (DFIG) oﬀers a convenient electromechanical solution, ... The power level of the rotor excitation will typically be an ordersp.info Magnetic Field Mapping Of Kolkata Superconducting …The arm assembly (fig.2) comprises a linear encoder, cart body carrying the search coil, straight track and support bar. All materials of the arm assembly are non-metallic to avoid distortion of the magnetic field locally and to avoid eddy current forces on them A linear encoder comprising a photo sensor assembly head, HEDS9200 and US Digitalsp.info Minimum Envelope Roughness Pulse Design for Reduced ...where δ is the maximum flip angle ripple allowed, and may be different in the pass- and stopbands, and N s is the number of points in the design grid. When R (b 1, …, b N c) is quadratic, Eq. is a quadratic program ().Solving this problem with the regularization function of Eq. yields minimum integrated power pulses; using the complex roughness regularization function of Eq.
The three interrelated key subjects - materials, electromagnetics and mechanics - include the following aspects: control, micromachines, intelligent structure, inverse problem, eddy current analysis, electromagnetic NDE, magnetic materials, magnetoelastic effects in materials, bioelectromagnetics, magnetosolid mechanics, magnetic levitations, applied physics of superconductors, superconducting ...Some results are removed in response to a notice of local law requirement. For more information, please see here.
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