| 基于FPGA的旋转编码器抗抖动四倍频电路设计 |
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| 引用本文： | 陈以,于新业,黄云鹏.基于FPGA的旋转编码器抗抖动四倍频电路设计[J].计算机工程与科学,2009,31(7). |
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| 作者姓名： | 陈以 于新业 黄云鹏 |
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| 作者单位： | 桂林电子科技大学计算机与控制学院,广西,桂林,541004 |
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| 摘 要： | 本文分析了旋转编码器工作原理,设计了一种高精度抗抖动四倍频电路。它主要由鉴相电路、脉冲加减计数电路、抗干扰电路、抗抖动电路和四倍频电路组成。电路采用Altera公司生产的FPGA,利用VHDL语言设计,具有计数频率高、可同时对多个编码器信号进行记数的优点。QuartusⅡ7.2的仿真结果表明,该电路准确可靠,定位精度明显提高,能有效地消除抖动的影响。
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| 关 键 词： | 旋转编码器 抗抖动 四倍频 FPGA |
The Anti-jitter Fourfold Frequency Multiplication Circuit Design of a Rotary Encoder Based on FPGA |
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| CHEN Yi,YU Xin-ye,HUANG Yun-peng.The Anti-jitter Fourfold Frequency Multiplication Circuit Design of a Rotary Encoder Based on FPGA[J].Computer Engineering & Science,2009,31(7). |
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| Authors: | CHEN Yi YU Xin-ye HUANG Yun-peng |
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| Affiliation: | School of Computer Science and Control;Guilin University of Electronic Technology;Guilin 541004;China |
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| Abstract: | The working principle of rotary encoder is analyzed,and a high-precision anti-jitter fourfold frequency multiplication circuit for rotary encoder is designed. It mainly consists of the phase-determination circuit,the up/down counting circuit,the anti-disturbance and anti-jitter circuit,and the fourfold frequency multiplication circuit. Using the FPGA manufactured by Altera Co.,we propose the design of a four-frequency multiplication circuit by the VHDL language based on the advantages of high counting frequ... |
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| Keywords: | FPGA |
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