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Variable frequency pulse width modulation

Citace:
ŠTORK, M., HAMMERBAUER, J. Variable frequency pulse width modulation. In Measurement 2015 : Proceedings of the 10th International Conference on Measurement. Bratislava: Institute of Measurement Science SAS, 2015. s. 43-46. ISBN: 978-80-969672-9-2
Druh: STAŤ VE SBORNÍKU
Jazyk publikace: eng
Anglický název: Variable frequency pulse width modulation
Rok vydání: 2015
Místo konání: Bratislava
Název zdroje: Institute of Measurement Science SAS
Autoři: Prof. Ing. Milan Štork CSc. , Doc. Ing. Jiří Hammerbauer Ph.D. ,
Abstrakt EN: Pulse width modulation (PWM) is widely used in different applications. PWM transform the information in the amplitude of a bounded input signal into the pulse width output signal, without suffering from quantization noise. The frequency of the output signal is usually constant. In this paper the new PWM system with frequency changing (PWMF) is described. In PWMF the pulse width and also frequency is changed, therefore 2 independents information are simultaneously transmitted-PWM and frequency modulation (FM) are simultaneously used. Such system needs fast demodulator separately for PWM and FM. The circuit for fast demodulation of PWMF signal is also described and measuring results are presented. All described circuits were constructed and measured.
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