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8th International Conference on Electrical, Mechanical and Computer Engineering, ICEMCE 2024

作者： Wang, Li Liang, Luyue Feng, Rui Xia, Chengxi Wang, Lee Space Engineering University Beijing101401 China Key Laboratory of Intelligent Aerospace Measurement Transportation and Control Ministry of Education Beijing101401 China

ISBN: (纸本)9798331506230

The memory circuit is an important part of the composition of digital systems. Due to the composition of the memory structure, the memory can not only realize the function of storage but also can realize the combinational logic circuits, code conversion circuits, function generators, DDS signal source, etc., but the premise is that you need to write the data into the ROM/RAM first. Hence, the design of the ROM/RAM read/write circuits is especially critical. This paper carries out the design of memory read/write circuits and simulates the read/write circuits of 2K8RAM, based on which the schematic design of ROM/RAM constituting combinational logic circuits, code conversion circuits, and function generators is realized. © 2024 IEEE.

关键词： function generators

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Generation of Power Quality Disturbances Using a Programmable Arbitrary Waveform Generator 15

Generation of Power Quality Disturbances Using a Programmabl...

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15th International Conference on Communications, COMM 2024

作者： Gasparesc, Gabriel Politehnica University Timisoara Dept. of Measurements and Optical Electronics Timisoara Romania

ISBN: (数字)9798350355956

ISBN: (纸本)9798350355956

This paper describes the generation of the main types of power quality disturbances based on an arbitrary waveform generator. A remote control application on PC for a multi-channel function generator through an USB connection is presented. The application sends SCPI commands to the instrument and allows the synthesis of distorted signals with disturbances which affect the power quality. © 2024 IEEE.

关键词： function generators

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The performance of a function generator under different loads

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Electronics World 2022年第2019期127卷 10-12页

作者： Alsayed, Sulaiman Algharbi Smart PCB Solutions Jordan

function generator circuits output different waveforms - sinusoidal, triangular and rectangular. These circuits can generate just one or multiple waveforms. Here we will examine a popular function generator’s (Figure 1) behaviour and performance with one of its outputs connected to a low-resistance load. The results are important for circuit designers when choosing applications for this circuit.

关键词： function generators

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On generators of the Hardy and the Bergman Spaces

arXiv

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arXiv 2023年

作者： Andreev, Valentin V. Bekker, Miron B. Cima, Joseph A. Department of Mathematics Lamar University BeaumontTX77710 United States Department of Mathematics The University of Pittsburgh at Johnstown 450 Schoolhouse Rd JohnstownPA15904 United States Department of Mathematics The University of North Carolina at Chapel Hill CB 3250 329 Phillips Hall Chapel HillNC27599 United States

A function which is analytic and bounded in the unit disk D is called a generator for the Hardy space H2(D) or the Bergman space A2(D) if polynomials in are dense in the corresponding space. We characterize generators in terms of −invariant subspaces which are also z−invariant and study wandering properties of such subspaces. Density of bounded analytic functions in the −invariant subspaces is also *** Codes 46E20, 30H10, 30H20 © 2023, CC0.

关键词： function generators

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Design of a precise subdivision system for gratings using a modified CORDIC algorithm

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IET CIRCUITS DEVICES & SYSTEMS 2019年第8期13卷 1284-1291页

作者： Zhu, Weibin Ye, Shengjin Huang, Yao Xue, Zi China Jiliang Univ Sch Measurement & Testing Engn Xueyuan St 258 Hangzhou 310018 Zhejiang Peoples R China Natl Inst Metrol Div Metrol Length & Precis Engn North 3rd Ring Rd18 Beijing 100029 Peoples R China

The authors have proposed a robust linearisation method for determining the angles of sinusoidal signals generated by gratings. This scheme solves the problem of non-linear subdivision by compensating sinusoidal signal. The conventional coordinate rotation digital computer (CORDIC) algorithm is optimised by double-rotation iteration, and the calculation accuracy of arcsine and arccosine functions is improved. A pipeline preprocessing circuit based on the CORDIC is designed for the signal compensation and digital subdivision. The two processes are implemented on a field-programmable gate array chip, which exhibits a wide input range and good dynamic response. A theoretical analysis using stable signals from a function generator verifies that the subdivision system achieves the ideal subdivision effect. The subdivision system is further applied to an angle-measuring device for a 16,384-line circular grating. The results of subdivision exhibit good linearity for the grating moire signal. Compared to the angular measurement by a laser interferometer within the three grating lines, the angle-measurement accuracy of +/- 0.000138 degrees (0.5 '') and the relative error is +/- 0.63% over a travel angle of three grating lines. Notably, the measurement error of the subdivision system is only half of that in a similar commercial product (MicroE system).

关键词： field programmable gate arrays measurement errors error compensation dynamic response angular measurement light interferometers digital arithmetic function generators modified CORDIC algorithm robust linearisation method sinusoidal signal nonlinear subdivision rotation digital computer algorithm double-rotation iteration arccosine functions error compensation digital subdivision moire signals field-programmable gate array chip stable signals function generator direct current offset deviation amplitude deviation ideal subdivision effect angle-measuring device circular grating grating moire signal grating lines angle-measurement accuracy measurement error MicroE system precise subdivision system design

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An On-Chip Linear, Squaring, Cubic and Exponential Analog function Generator

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IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS 2019年第1期66卷 94-104页

作者： Vlassis, S. Khateb, F. Souliotis, G. Univ Patras Phys Dept Elect Lab Patras 26500 Greece Brno Univ Technol Dept Microelect Brno 60190 Czech Republic Czech Tech Univ Fac Biomed Engn Prague Czech Republic Technol Educ Inst Western Greece Dept Elect Engn Patras 30020 Greece

This paper presents a novel technique based on the current steering technique for the generation of a reconfigurable current that approximates the linear, squaring, cubic, and exponential and their descending analog functions. The proposed implementation can he easily programmed to generate these functions by simply reconfiguring the weighting factors of current sources and offers an extendable input voltage range keeping excellent accuracy. The circuit topology has been fabricated using 0.18 mu m TSMC CMOS process under 1.8 V supply voltage. Measurements results validate the theoretical analysis giving for 400 mV input voltage range while keeping small relative approximation errors, 0.3%, 1%, 1.9%, and 0.7% for linear, squaring, cubic, and exponential, respectively.

关键词： CMOS analog circuits function generators approximation techniques

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Generation scheme of chirp scaling phase functions based on floating-point CORDIC processor

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JOURNAL OF ENGINEERING-JOE 2019年第21期2019卷 7436-7439页

作者： Fang, Linlin Xie, Yizhuang Li, Bingyi Chen, He Beijing Inst Technol Sch Informat & Elect Radar Res Lab Beijing 100081 Peoples R China Beijing Key Lab Embedded Real Time Informat Proc Beijing 100081 Peoples R China

This study presents a chirp scaling (CS) phase function generation scheme based on CORDIC algorithm, it adopts single precision floating-point CORDIC processor to implement a variety of non-linear operations which are involved in CS synthetic aperture radar (SAR) imaging algorithm. We extend the range of convergence of CORDIC algorithm and reduce the data width in rotation unit module by adopting a hardware resource reduction scheme. We also adopt a unified CORDIC processor to achieve square root, multiplication, and division operation, which can substitute multiple single-function processors and simplify the complicate arithmetic in CS algorithm. As a proof of concept, we verify the performance of the proposed design scheme on Xilinx XC7VX690T FPGA platform, it is also applied to 16384 x 16384 points target SAR imaging system, the FPGA resource occupancy of the CS phase function generation module demonstrates that the usage of CORDIC processor can effectively save the consumption of hardware resources, and the maximum operating frequency is acceptable. The accuracy of phase functions can satisfy the engineering requirements.

关键词： synthetic aperture radar floating point arithmetic field programmable gate arrays radar imaging logic design function generators chirp scaling phase functions chirp scaling phase function generation scheme CORDIC algorithm single precision floating-point CORDIC processor nonlinear operations hardware resource reduction scheme unified CORDIC processor division operation Xilinx XC7VX690T FPGA platform SAR imaging system CS synthetic aperture radar imaging algorithm multiplication operation square root operation

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Materials Handling Equipment - Rushmore & Weber Inc

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2017年

Materials Handling Equipment - Rushmore & Weber Inc.: by published by

关键词： cahill duty cycle electrical electronic electronic music equipment function function generator function generators handling harmonic harmonics inc.: magnetic field materials music musical musical process musical processes rushmore sine sine wave sine waves square wave wave

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NASA Technical Reports Server (Ntrs) 20010000415: Piecewise Linear Membership function Generator-Divider Approach

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2017年

NASA Technical Reports Server (Ntrs) 20010000415: Piecewise Linear Membership function Generator-Divider Approach by NASA Technical Reports Server (Ntrs); published by

关键词： (ntrs) 20010000415: approach computerized simulation controllers expert systems function function generators fuzzy systems generator-divider hart, ron logic circuits martinez, gene nasa technical reports server (ntrs) ramirez, jaime yuan, bo zrilic, djuro

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Exact Electronics function Generations Flyers (200 Series, Type 301, Type 255)

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2017年

Exact Electronics function Generations Flyers (200 Series, Type 301, Type 255): by published by

关键词： amplitude electronics exact flyers frequency front panel function function generator function generators generations generator main main generator main output output outputs ramp ramp generator reference level sine sine waveform sine waveforms trigger output waveform

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