Results 111 to 120 of about 16,786 (165)
Some of the next articles are maybe not open access.
Analysis of Harmonic Distortion in the Colpitts Oscillator
2006 13th IEEE International Conference on Electronics, Circuits and Systems, 2006In this communication a simple technique based on the phasor's method is presented in order to analytically deal with nearly sinusoidal oscillator constraints. Unlike other methods, more complex from a computational point of view, such as Volterra series and Poincare's perturbation, we are able to set the main linearity performance of a weakly ...
PALUMBO, Gaetano +2 more
openaire +2 more sources
Removing harmonic distortion in tiled screens
2015 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2015When producing halftones with the screening technique, tiling is generally used to construct a screen of appropriate size with screens of small fixed size. Regular tiling and random tiling are two common tiling schemes used nowadays. The former scheme produces periodic screens which introduce harmonic distortion to the screening outputs while the ...
Xiao Chen, Yuk-Hee Chan
openaire +1 more source
Harmonic Bandpass Distortion of a Chebyshev Nonlinearity
IEEE Transactions on Communications, 1976Harmonic distortion imparted to the sidebands of an amplitude-modulated carrier by a system described by a Chebyshev series is evaluated. Sideband distortion increases with modulation depth but decreases with low carrier level, when even-harmonic contributions disappear.
openaire +1 more source
Elimination of harmonic distortion in Vibroseis data
Geophysics, 1994Abstract We present a new approach to eliminate the harmonic distortion in vibroseis data. This technique is based on the definition of the sweep for the case where the instantaneous frequency varies linearly with time. The method requires no more than the computation of a purely deterministic phase-shift filter that has the phase ...
Li, Xiao-Ping +2 more
openaire +1 more source
World Pumps, 2009
ABB's Kari O Kovanen looks at methods used to reduce harmonic distortion produced by variable speed drives, including reactors, multi-pulse solutions and passive harmonic filters, and also refutes some of the criticisms of low harmonic drives made by some commentators.
openaire +1 more source
ABB's Kari O Kovanen looks at methods used to reduce harmonic distortion produced by variable speed drives, including reactors, multi-pulse solutions and passive harmonic filters, and also refutes some of the criticisms of low harmonic drives made by some commentators.
openaire +1 more source
Decomposition of Harmonically Distorted Chirps into their Harmonic Components
2009 IEEE 13th Digital Signal Processing Workshop and 5th IEEE Signal Processing Education Workshop, 2009Two techniques to isolate the harmonic components of non-linear harmonically distorted chirps are presented. Harmonically distorted chirps occur among other fields in the Vibroseis technique in seismic exploration. The harmonic components are theoretically and practically important as their spectral ratios to the fundamental component are used for ...
Christos Saragiotis, Peter Scholtz
openaire +1 more source
Harmonic injection method: a novel method for harmonic distortion analysis
ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196), 2002In this paper we propose a novel method for analysing harmonic components of the signals produced by nonlinear dynamical systems. The proposed method, unlike numerical analysis method, gives symbolic answers that allow us to interpret the operation of the analysed systems more insightfully. To demonstrate the accuracy and the flexibility of our method,
Jirayuth Mahattanakul +1 more
openaire +1 more source
Harmonic and interharmonic distortion modeling in multiconverter systems
IEEE Transactions on Power Delivery, 1995The problem of modeling multi-power converter systems in presence of harmonic and interharmonic distortion is considered. Specifically, current source rectifiers are considered as distortion sources, some supplying DC motors and the remaining supplying inverters feeding AC machines.
R. CARBONE +3 more
openaire +3 more sources
Harmonic distortion in nearly sinusoidal oscillators
European Transactions on Telecommunications, 1990AbstractAn approach for calculation of harmonic content (h) in nearly sinusoidal oscillators is presented. It uses Volterra series to develop explicit expressions, which are then used to discuss the dependence of h and the dependence of amplitudes of harmonics upon the feedback and upon the oscillation‐amplitude.
openaire +1 more source
2001
Having run a harmonic study, bus harmonic voltages, line harmonic currents and voltage and current distortion factors are calculated and compared to limits set by standards. If the limits are exceeded, various filtering alternatives are simulated and examined to resolve resonance problems and bring the system into compliance with known standards.
openaire +1 more source
Having run a harmonic study, bus harmonic voltages, line harmonic currents and voltage and current distortion factors are calculated and compared to limits set by standards. If the limits are exceeded, various filtering alternatives are simulated and examined to resolve resonance problems and bring the system into compliance with known standards.
openaire +1 more source