Sinusoidal signal can be used as stimulus to test static and dynamic parameters of ADC. A sigma-delta modulation based sinusoidal signal generator for ADC testing in SOC was introduced. The generator was built on the same chip with ADC. A numerical resonator generated a sinusoidal signal which was converted to a single bit stream by a sigma-delta modulator. Due to oversampling, the quantization...

This paper presents a hybrid scheme for the control of active and reactive powers using the direct vector control with stator flux orientation (SFO) of the DFIG. The hybrid scheme consists of Fuzzy logic, Reference Signal Tracking (F-RST) controllers. The proposed (F-RST) controller is compared with the classical Proportional-Integral (PI) and the Polynomial (RST) based on the pole placement th...

In this paper we present a digital generator which produces sine-wave signals with variable frequency. The shape of the signal is stored in memory. The modification of the frequency is achieved by changing the number of samples used to generate a period. The digital circuitry of the generator is implemented using a field programmable gate array (FPGA) and a microcontroller. Experimentally we ha...

This paper presents a software tool for a three-phase voltage dip signal generator, which can be used to generate waveforms similar to those recorded. The voltage dip signal generator is designed to shape the voltage waveforms for the three phases, using random functions for almost all possible parameters. The advantage of using the generated waveforms instead of real data measurements is that ...

Electrocardiograms are widely used in biomedical signal processing to diagnose abnormal heart functioning. Many algorithms have been constructed to analyse, measure and compress these signals. These methods are hard to test because real ECG signals are distorted by several types of noise. In this paper we present an algorithm which generates realistic synthetic ECG signals. This algorithm, amon...

...............................................................................................1 Chapter 1: Gravitational Waves & LIGO.......................................................2 1.1 Gravitational Waves.....................................................................2 1.2 LIGO......................................................................................2 1.3 A Source of ...

Abstract With the normalization of cardiovascular diseases(CVD) in many countries, portable ECG monitoring devices have gradually become popular. However, since current equipment lacks a unified testing standard specification, suitable calibration device is required for restraint. This research simulates multi-state signal generation system built using Arduino uno board devices. The can generat...