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This paper shows a data converter based on a self oscillating pulse width modulator. The output data is recovered form the PWM signal using a digital replica of the PWM loop filter and a data driven asynchronous sampler. A cubic spline interpolator is used to accomplish the irregular to uniform sampling conversion at the output of the data converter. This architecture is specially suited for low voltage...
This paper describes a DC motor drive using a pulse width modulated (PWM) signal and tachometer feedback. The PWM and analog-to-digital capabilities of a microcontroller are used to realize a very inexpensive and efficient controller. The design of the entire system, as well as PCB layout are explored. Manufacturing considerations for the entire system are also presented.
This paper presents the harmonics analysis and compensation which occurred in the electrical system. We use the electrical signal analysis based on FFT technique in order to calculate harmonics that occurred in the electrical system. The harmonics are compensated by using active harmonic filters. This system consists of a computer which works as controller, processor, analysis, monitor and database...
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