| 摘要: |
| 利用 FPGA 芯片及 D/A 转换器，采用直接数字频率合成(DDS)技术，设计并实现了相
位、频率可控的三相正弦信号发生器。正弦调制波的产生采用查表法，仅将1／4周期的正
弦波数据存入 ROM 中，减少了系统的硬件开销。仿真和电路测试表明，输出波形完全达到
了技术要求，证明了设计的正确性和可行性。 |
| 关键词: 直接数字频率合成 信号发生器 现场可编程门阵列 三相波形 |
| DOI： |
|
| 基金项目:陕西省教育厅自然科学专项科研计划项目(09JK730；2010JK838) |
|
| Implementation of Three phase Sinuous Direct Digital Synthesizer Based on FPGA |
| WU Jin |
| (Implementation of Three phase Sinuous Direct Digital Synthesizer Based on FPGA) |
| Abstract: |
| Based on combination of FPGA and D/A,a three-pha
se sinuous signal generator whose phase and frequency can be modified is desi
gned and realized by using DDS. Sinuous
modulation waveforms come from lookup table. Data of sinuous waveforms only in 1
/4 sinuous cycle is required to be stored in ROM so that the internal
hardware resource of the FPGA is reduced. Simulation and tests show that the ou
tput waveform
can meet the design specifications, which proves the design is correct and feas
ible. |
| Key words: DDS signal generator FPGA three-phase waveform |
