| 基于FPGA的多路光电编码器数据采集系统 |
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| 引用本文： | 叶东,周志炜,张飚,彭国茂.基于FPGA的多路光电编码器数据采集系统[J].传感器与微系统,2006,25(5):45-47. |
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| 作者姓名： | 叶东 周志炜 张飚 彭国茂 |
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| 作者单位： | 1. 哈尔滨工业大学,自动化测试与控制系,黑龙江,哈尔滨,150001
2. 哈尔滨师范大学,物理系,黑龙江,哈尔滨,150080 |
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| 摘 要： | 介绍了一种基于现场可编程门阵列(FPGA)的多路光电编码器数据采集系统,包括其功能、原理、软件编程和硬件实现电路。描述了该电路的4个主要功能:四倍频细分、辨向、计数及串行通讯。根据波形的跳沿实现四倍频细分;通过对波形相位的分析,采用基于相位变化的设计原理实现辨向。整个系统在QuartusⅡ软件环境下实现编程,应用A ltera公司的EPF10K20TC144-3型芯片作为硬件载体,角度分辨力可达1″。最后,给出了详细的编程和仿真波形。
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| 关 键 词： | 光电编码器 四倍频细分 辨向 |
| 文章编号： | 1000-9787（2006）05-0045-03 |
| 收稿时间： | 2005-12-25 |
| 修稿时间： | 2005年12月25日 |
Data acquisition system for multiple encorders based on FPGA |
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| YE Dong,ZHOU Zhi-wei,ZHANG Biao,PENG Guo-mao.Data acquisition system for multiple encorders based on FPGA[J].Transducer and Microsystem Technology,2006,25(5):45-47. |
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| Authors: | YE Dong ZHOU Zhi-wei ZHANG Biao PENG Guo-mao |
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| Affiliation: | 1. Department of Automatic Test and Control, Harbin Institute of Technology, Harbin 150001, China; 2. Department of Physics, Harbin Normal University, Harbin 150080, China |
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| Abstract: | A kind of data collection system of multiple encoders is introduced based on FPGA,including function,principle,programme and circuit.The four primary functions are introduced,such as four fold-frequency subdivision,direction-judgment,counter and serial communication.The four fold-frequency subdivision is realized on the basis of scarp of wave shape,and the direction-judgment is realized on the basis of phase change after analyzing wave shape.The programme is in Quartus II,and the design is based on EPF10K20TC144-3 of Altera,and the resolution is 1″.The programme is described in details with simulation waveform. |
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| Keywords: | encorders four fold-frequency subdivision direction-judgment |
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