| 基于DDS技术的多路高精度信号源设计 |
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| 引用本文： | 吴桂清,莫云,张峰铭.基于DDS技术的多路高精度信号源设计[J].世界科技研究与发展,2010,32(3):317-320. |
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| 作者姓名： | 吴桂清 莫云 张峰铭 |
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| 作者单位： | 湖南大学电气与信息工程学院,长沙,410082 |
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| 摘 要： | 本系统以DSP2812和CPLD相结合,采用DDS（DDFS,直接频率数字频率合成）技术设计的多路高精度信号源,它可以根据用户设定的电流、电压参数,实现12路模拟量的输出.其模拟量的基本波形为：正弦波、三角波、方波和用户自定义的波形,同时可根据需要实现20次以内任意次谐波的迭加.
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| 关 键 词： | 数字信号处理器 IQMATH 直接数字频率合成 复杂可编程逻辑器件 |
Design of High Accuracy Signal Source Based on DDS Technology |
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| WU Guiqing,MO Yun,ZHANG Fengming.Design of High Accuracy Signal Source Based on DDS Technology[J].World Sci-tech R & D,2010,32(3):317-320. |
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| Authors: | WU Guiqing MO Yun ZHANG Fengming |
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| Institution: | ( College of Electrical and Information Engineering, Hunan University, Changsha 410082) |
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| Abstract: | This system is composed of DSP2812 and CPLD, and adopts DDS （DDFS, direct frequency digit frequency synthesis） technique to design multi-channel high-precision signal source. It can produce 12-channel analog quantity output based on the current and voltage parame- ters set. The analog waveforms contain sine wave, triangular wave, square wave and user - defined wave, simultaneously, it can output any harmonics overlying together within 20 times according to the demand. |
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| Keywords: | IQMATH |
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