Design and implementation of high precision semiconductor laser drive system based on MAX1978

This paper presents a study of motion design and its implementation on a hybrid drive system that combines the motions of a large constant speed motor with a small servo motor by means of a mechanism in order to provide a powerful programmable drive system. In general, the most suitable function used to generate motion curves is the power form of polynomial functions. However, this function may produce some unexpected oscillations between the boundary conditions. A methodology is given to prevent this drawback of the interpolation function. A laboratory type set-up is designed and manufactured in order to realize the problems of practical implementation. An experimental application involving the hybrid drive system is included in the study presented.

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The Design and Implementation of High Precision Three-Phase Sine-Wave Signal Generator

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.543-547.838 ◽

2014 ◽

Vol 543-547 ◽

pp. 838-841

Author(s):

Shou Qiang Kang ◽

Shan Shan Li ◽

Shi Zheng ◽

Di Wu

Keyword(s):

High Precision ◽

Design Method ◽

Synthesis Method ◽

Sine Wave ◽

Signal Generator ◽

Lookup Table ◽

Direct Digital Frequency Synthesis ◽

Wave Signal ◽

Design And Implementation ◽

Three Phase

A design and implementation method of high precision three-phase sine-wave signal generator is proposed based on MCU and FPGA. For the traditional design method, direct analog synthesis method and phase locked loop (PLL) technology are used to design the signal generator. So the function, the precision and other aspects are inadequate. Aiming to the problem, a signal generator is designed based on direct digital frequency synthesis (DDS) technology. The MCU is used to control the peripheral devices and the frequency and phase control word can be obtained. The DDS module is achieved by EP4CE6E22C8 and the waveform lookup table addresses are outputted. The digital three-phase sine-wave data can be read from the lookup table. Through the three-way D/A converter and the amplifier circuit, the digital signal is converted to analog signal and the three-phase sinusoidal wave is outputted. The precision can be improved by increasing the sampling points, phase accumulator bits and D/A bits, and then, high precision three-phase sine-signal can be obtained and the adjustable frequency precision is 0.001.

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Design and Implementation of High Precision DACs Calibration Algorithms Based on FPGA

DEStech Transactions on Environment Energy and Earth Science ◽

10.12783/dteees/iccis2019/31728 ◽

2019 ◽

Author(s):

Guosheng PENG ◽

Yufeng CHEN ◽

Zhengtao XIANG ◽

Kai CHE ◽

Zesheng FANG

Keyword(s):

High Precision ◽

Design And Implementation

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Design and Implementation of IEEE 1588 High Precision Clock Synchronization Based on GPS Time Service

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.532-533.292 ◽

2012 ◽

Vol 532-533 ◽

pp. 292-296 ◽

Cited By ~ 1

Author(s):

Kang Wang ◽

Yong Hui Hu ◽

Zai Min He ◽

Hong Jiao Ma

Keyword(s):

High Precision ◽

Time Synchronization ◽

Clock Synchronization ◽

Time Service ◽

Ieee 1588 ◽

Design And Implementation ◽

Nanosecond Range ◽

Application Fields ◽

Timing Requirement ◽

Precision Clock

In view of PTP high precise timing requirement for many application fields, GPS time service is provided with the advantages of high precision and high stabilization. The principle and timescale of PTP based on GPS are analyzed and discussed. And then a PTP time synchronization platform with GPS-based UTC time is designed and implemented, the correlative key design flowchart is described as well. Finally, the paper gives the experiment results, which show the time synchronization accuracies can reach nanosecond range.

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