| 基于FPGA的闭环自动增益控制系统 |
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| 引用本文： | 李鸣,周敏岚,吴志敏.基于FPGA的闭环自动增益控制系统[J].化工自动化及仪表,2011,38(7):831-833. |
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| 作者姓名： | 李鸣 周敏岚 吴志敏 |
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| 作者单位： | 1. 南昌大学环境与化学工程学院,南昌,330031
2. 深圳职业技术学院,深圳,518055 |
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| 摘 要： | 设计了一种基于FPGA的闭环自动增益控制系统,采样保持部分利用互锁技术采集VCA810输出的第1个有效波峰值电压大小,再经FPGA的AGC控制算法,产生控制电压值,经电压调整后,控制VCA810的输出.对本设计过程中产生的小数,做了变小数为整数的处理,从而提高了精度.
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| 关 键 词： | FPGA 自动增益控制 有效波峰值 采样保持 |
Closed-loop Automatic Gain Control System Based on FPGA |
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| LI Ming,ZHOU Min-lan,WU Zhi-min.Closed-loop Automatic Gain Control System Based on FPGA[J].Control and Instruments In Chemical Industry,2011,38(7):831-833. |
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| Authors: | LI Ming ZHOU Min-lan WU Zhi-min |
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| Affiliation: | 1.School of Environmental and Chemical Engineering,Nanchang University,Nanchang 330031,China;2.Shenzhen Polytechnic,Shenzhen 518055,China) |
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| Abstract: | The FPGA-based closed-loop automatic gain control system was designed.Its sample-and-hold unit employs the interlock technology to capture the voltage of the first significant sampling peak from the VCA810,and then to produce a control voltage and have it adjusted through the AGC control algorithm to control VCA810 output.The decimals in this design were converted into an integer to improve the precision. |
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| Keywords: | FPGA automatic gain control（AGC） significant peaks value sample-and-hold |
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