Signal generation algorithm for digital polar transmitters with reduced receive band noise

The problem is to ensure the stability of the differential protection functioning at deep saturation of the cores of electromagnetic current transformers. The errors of current transformers support the greatest influence on the operation of differential protections. Features of the differential protection operation at deep saturation of current transformers in short-circuit transient modes are considered. Comparison results of various algorithms for the formation of a bias signal are given. The control capability of the bias signal generation algorithm was analyzed. The harmonic composition of the differential current on the mathematical model of two-arm differential protection in the transient mode with external and internal short circuits at saturation of the current transformers of one arm was investigated. The stability of the differential protection functioning can be enhanced by the selectivity of the bias signal generation algorithm. A bias signal control criterion using a relative level of higher harmonics to a differential signal was proposed.

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Signal Analysis of Monitoring System for Object Tracking

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.677.379 ◽

2013 ◽

Vol 677 ◽

pp. 379-383

Author(s):

Jin Tae Kim ◽

Dong Wook Kim

Keyword(s):

Automatic Control ◽

Object Tracking ◽

Monitoring System ◽

Signal Analysis ◽

Measured Data ◽

Signal Generation ◽

Manual Control ◽

Generation Algorithm ◽

Image Center ◽

Monitoring Camera

This paper proposes a monitoring system by signal generation algorithm for object tracking. Using the control signal, the monitoring camera can track a moving object and keep it near the image center for a longer time. The proposed method is validated in experiments that automatically move a mark located at a specified position to the image center. To evaluate the proposed algorithm, we compare the generated data in the automatic control with measured data in manual control and carry out the object tracking using a simple object.

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DSP-based sinusoidal PWM signal generation algorithm for three phase inverters

2009 IEEE Electrical Power & Energy Conference (EPEC) ◽

10.1109/epec.2009.5420781 ◽

2009 ◽

Cited By ~ 8

Author(s):

Abdelrahaman Yousif Eshag Lesan ◽

Mamadou Lamine Doumbia ◽

Pierre Sicard

Keyword(s):

Signal Generation ◽

Generation Algorithm ◽

Three Phase

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Decay of Temporary Threshold Shift in Noise

Journal of Speech and Hearing Research ◽

10.1044/jshr.1602.267 ◽

1973 ◽

Vol 16 (2) ◽

pp. 267-270 ◽

Cited By ~ 5

Author(s):

John H. Mills ◽

Seija A. Talo ◽

Gloria S. Gordon

Keyword(s):

Sound Field ◽

Threshold Shift ◽

Temporary Threshold Shift ◽

Octave Band ◽

Band Noise ◽

Lower Asymptote

Groups of monaural chinchillas trained in behavioral audiometry were exposed in a diffuse sound field to an octave-band noise centered at 4.0 k Hz. The growth of temporary threshold shift (TTS) at 5.7 k Hz from zero to an asymptote (TTS ∞ ) required about 24 hours, and the growth of TTS at 5.7 k Hz from an asymptote to a higher asymptote, about 12–24 hours. TTS ∞ can be described by the equation TTS ∞ = 1.6(SPL-A) where A = 47. These results are consistent with those previously reported in this journal by Carder and Miller and Mills and Talo. Whereas the decay of TTS ∞ to zero required about three days, the decay of TTS ∞ to a lower TTS ∞ required about three to seven days. The decay of TTS ∞ in noise, therefore, appears to require slightly more time than the decay of TTS ∞ in the quiet. However, for a given level of noise, the magnitude of TTS ∞ is the same regardless of whether the TTS asymptote is approached from zero, from a lower asymptote, or from a higher asymptote.

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