نتایج جستجو برای: signal generator
تعداد نتایج: 457491 فیلتر نتایج به سال:
Event generators are an indispensable tool for the preparation and analysis of particle-physics experiments. In this contribution, physics principles underlying the construction of such computer programs are discussed. Results, within and beyond the Standard Model of particle physics, obtained with a new event generator [1] are presented. This generator is capable to describe signal processes f...
This paper studies the fault detection problem of linear periodic systems. The aim is to design residual generators, which deliver a residual signal fully decoupled from unknown disturbances. First, a periodic parity relation based full decoupling residual generator with a periodic varying parity vector is designed. Then, a periodic observer based full decoupling residual generator is obtained....
Implementation of a Fast Frequency Hopping Spread Spectrum modulator with System Generator on a FPGA
This work is based on a previous FFHSS (Fast Frequency Hopping Spread Spectrum) transceiver designed for wireless optical communications. The core of the transmitter is a discrete DDS (Direct Digital Synthesizer). In the first prototype the DDS control and the digital synchronization signal were generated using a PLD (Programmable Logic Device), besides a discrete external filter was necessary ...
SPIRAL is a generator for libraries of fast software implementations of linear signal processing transforms. These libraries are adapted to the computing platform and can be re-optimized as the hardware is upgraded or replaced. This paper describes the main components of SPIRAL: the mathematical framework that concisely describes signal transforms and their fast algorithms; the formula generato...
We experimentally demonstrate a low-phase-noise tenfold frequency multiplier based on compact integrated optical comb (OFC) generator. The Indium Phosphide (InP) monolithically OFC is flexible scheme using cascaded modulators. extremely broadly tunable in wavelength and repetition frequency, making it interesting for high-spectral-purity mm-waves applications. generation with 2.6 GHz spacing 19...
A slave audio two-phase sinewave generator, which can be directly synchronized to a master generator, is described here. It can be used in ac metrology setups to provide additional “compensation” signals, traditionally derived with expensive multidecade inductive voltage divider networks. The generator is based on two direct digital synthesis (DDS) chips, programmed via the parallel printer PC ...
In this paper the design and implementation of a fuzzy logic-based controller is described for regulating the output voltage of a synchronous generator. An automated fuzzy logic-based control strategy is presented for controlling the armature voltage of a synchronous generator by varying the field current in real time. The fuzzy logic controller will take into account the voltage difference bet...
Colored noise can be generated by filtering of the white noise. It is a simple task. However, it becomes challenging if high operating speed of the generator is required. The realization of digital filter generally requires one multiplication per coefficient. Therefore, a high operating speed is achieved only with the cost of several generalpurpose multipliers. In this paper, a multiplierless r...
In this paper, an all-digital and low-power reference clock generator with cell-based design for biotelemetry applications is presented. The proposed clock generator employs a cascade-stage structure to achieve high resolution and wide range at the same time. Besides, based on the proposed Schmitt-trigger-based delay cell (STDC), hysteresis delay cell (HDC), and digitally controlled varactor (D...
In this paper, the concept of the modulated-ramp PWM generator is presented. The specific nonlinear behavior of this generator enables an exact linear control-to-output static conversion characteristic of DC-DC switching converters, such as the boost (step-up), buck/boost, Ćuk or Sepic, operating in Continuous Conduction Mode (CCM). The resulting linearization leads to a significant improvement...
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