| 16kHz高精度交流信号源的设计与实现 |
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| 引用本文： | 林辉. 16kHz高精度交流信号源的设计与实现[J]. 自动化信息, 2011, 0(9): 41-43 |
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| 作者姓名： | 林辉 |
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| 作者单位： | 电子科技大学光电信息学院,成都610054 |
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| 摘 要： | 本文介绍了一种高精度模拟正弦信号源的设计与实现，采用NiosⅡ嵌入式处理器控制来产生高精度的交流信号，它被用作模拟飞行校准装置的信号源。该信号源由FPGA、DA数模转换器、差分运放、低通滤波等模块组成。主要采用NiosⅡ嵌入武处理器和直接数字频率合成（DDS）、PLL、D／A及差分放大等技术，设计出频率分辨率小于5Hz...
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| 关 键 词： | 现场可编程门阵列 NiosⅡ 直接数字频率合成 AD9750 AD8130 |
The Design and Implementation of 16 kHz High-precision AC Signal Source |
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| LIN Hui. The Design and Implementation of 16 kHz High-precision AC Signal Source[J]. Automation Information, 2011, 0(9): 41-43 |
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| Authors: | LIN Hui |
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| Affiliation: | LIN Hui (School of Optoelectronic Information, University of Electronic Science and Technology of China,, Chengdu 610054) |
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| Abstract: | This paper introduces the design and implementation of a high-precision simulated Sine signal source, the Nios Ⅱ embedded processors control is adopted to generate the high-precision AC signal, it is used for the signal source of simulated flight calibrating device. The signal source is composed of the modules of FPGA, D/A converter, differential amplifier and LPF （Lowpass filtering）, etc. The simulated sine wave with its frequency resolution is tess than 5Hz, the frequency is 16 kHz and the amplitude is 3V±0.5V has been designed by mainly using the technologies of Nios Ⅱ embedded processor, Direct Digital Synthesis （DDS）, PLL, D/A and differential amplifying, and so on. |
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| Keywords: | Field Programmable Gate Array （FPGA） Nios Ⅱ Direct Digital Synthesis （DDS） AD9750 AD8130 |
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