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等精度频率测量

等精度频率测量

摘 要

本文叙述了转速测量的原理及转速测量的几种常用方法,分析了各种方法

在测量上的原理和特性,设计出一种基于FPGA的等精度测速系统。详细阐述

了等精度测速系统的工作原理和速度采集方法,并进行了方案论证和误差分析。

硬件系统主要由脉冲信号产生、脉冲信号处理和显示模块组成。软件部分采用

VHDL语言实现各功能模块设计,在QuartusⅡ开发平台上进行仿真、测试。

结果证实该方法具有电路简单、速度快、精度高、稳定性好等优点。具有

一定的应用价值。

关键词:转速测量 等精度 FPGA

ABSTRACT

This article narrated the tachometric survey principle and tachometric survey

several commonly used methods, has analyzed each method in the survey principle

and the characteristic, designs one kind based on FPGA and so on precisions to

measure the fast system. Elaborated in detail and so on precisions measured the fast

system's principle of work and the speed gathering method, and has carried on the

project concept demonstration and the error analysis. The hardware system mainly has,

signal impulse processing and the display module by the signal impulse is composed.

The software part uses the VHDL language to realize various functional module

design, in QuartusⅡDevelops in the platform to carry on the simulation.

The result confirmed that this method has the electric circuit to be simple, the

speed is quick, the precision is high, stability good and so on merits. Has certain

application value.

Key words: Speed Measurement Precision FPGA

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