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Logarithmic amplitude frequency characteristics of digital controllers
Frequency description of the system can be realized by means of frequency characteristics in complex plane, in linear or logarithmic coordinates. This paper deals with frequency characteristics in logarithmic coordinates. A...
BC - Teorie a systémy řízení
- 2003 •
- D
Rok uplatnění
D - Stať ve sborníku
Frequency description of digital controllers
Next to time description of systems is used frequency description. This contribution deals with frequency description of digital controllers PS, PD and PSD. Aim is induce frequency transfer function of these controllers and...
JB - Senzory, čidla, měření a regulace
- 2002 •
- D
Rok uplatnění
D - Stať ve sborníku
Laser Frequency Stabilization and Measurement of Optical Frequencies
This thesis is dedicated to measurement of optical frequencies with applications in metrology. The frequency/time interval is the best measurable quantity. The invention of the femtosecond frequency comb technique greatly s...
BH - Optika, masery a lasery
- 2012 •
- B
Rok uplatnění
B - Odborná kniha
Frequency normal
Frequency normal is used like reference frequency 10MHz for precision measurement and generating frequency.
JA - Elektronika a optoelektronika, elektrotechnika
- 2009 •
- Gfunk
Rok uplatnění
Gfunk - Funkční vzorek
Remotely manageable system for stabilizing femtosecond lasers
In the field of precise measurement of optical frequencies, laser spectroscopy and interferometric distance surveying the optical frequency synthesizers (femtosecond combs) are used as optical frequency references. They gen...
BH - Optika, masery a lasery
- 2014 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
Software Implementation of a Simple All-Digital Frequency Synthesizer
A frequency synthesizer is an electronic circuit that generates a desired frequency from a single reference frequency or several reference frequencies. In this paper, a new simple frequency synthesizer is ...
Medical engineering
- 2023 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
Wideband Radar Sensor with Tuned Measurement Frequency of "Frequency Hopping" Type
Wideband radar sensor with tuned measurement Frequency of "Frequency Hopping" Type.
JA - Elektronika a optoelektronika, elektrotechnika
- 2009 •
- Gfunk
Rok uplatnění
Gfunk - Funkční vzorek
Current harmonics of voltage-source active rectifier with random switching frequency
-phase voltage-source active rectifiers when the switching frequency of the devices is random; it is not an integer multiple of the supply frequency (50 Hz). The first part simplified current waveform and the simulations in the rand...
JA - Elektronika a optoelektronika, elektrotechnika
- 2014 •
- D
Rok uplatnění
D - Stať ve sborníku
Estimating a spectral correlation function under the conditions of imperfect relation between signal frequencies and a sampling frequency.
connected with nonstandard relations between signal frequency parameters. It is shown, that influence of the inaccuracy of the frequency is stronger for modulating frequency then for carrier frequency. Small inacc...
JA - Elektronika a optoelektronika, elektrotechnika
- 2010 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
SCIPI, a method of precise fundamental frequency estimation from DFT spectrum
This paper explores the possibility how to implement a frequency estimator based on a new principle. It takes advantage of the Fourier transform behavior between the spectral lines of corresponding discrete frequency spectrum. The p...
JB - Senzory, čidla, měření a regulace
- 2011 •
- D
Rok uplatnění
D - Stať ve sborníku
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