摘要
给出信号发生器的硬件组成,阐述DDS芯片AD9833的工作原理,SPI通信过程,正弦波、三角波、方波3种信号的软件实现方法。搭建控制平台验证信号发生器的性能,结果表明:该信号发生器信号输出高频噪声少、频率精度高。
The hardware structure of the signal generator was presented and the working principle of AD9833 chip （DDS） was expounded, including the SPI communication process and the software implementation of sine signals, triangle signals and square wave signals. Verifying the performance of waveform generator on the con- trol platform established shows that, this signal generator has less high-frequency noise in signals output and higher frequency accuracy.
出处
《化工自动化及仪表》
CAS
2017年第3期273-276,共4页
Control and Instruments in Chemical Industry
