基于FPGA的三相函数信号发生器设计  

Three-phase Signal Generator Based on FPGA

作　　者：李辉[1] 朱林生[2] 

机构地区：[1]浙江师范大学数理与信息工程学院,浙江金华321004 [2]华东交通大学电气与电子工程学院,江西南昌330013

出　　处：《电子科技》2010年第7期87-91,共5页Electronic Science and Technology

基　　金：浙江省科技厅新苗人才计划基金资助项目(2008R40G2030045)

摘　　要：基于FPGA的三相函数信号发生器以DDS为核心,在Altera公司CycloneⅡ系列EP2C8T144C8上实现正弦波、方波、三角波和锯齿波信号的产生,利用单片机PIC18F4550控制波形的频率及相位差。同时单片机通过DAC0832控制波形数据转换DAC902参考电压实现在波形幅度的控制,D/A输出的波形经过放大、滤波后输出。波形参数的输入输出通过触摸屏和液晶屏实现,测试结果显示该系统具有较高的精度和稳定性。The three-phase signal generator has DDS as its core and generates sine,square and triangle wave and saw-tooth signal in the Altera＇s Cyclone Ⅱ EP2C8T144C8.It controls the frequency and phase difference of the waveform with PIC18F4550.MCU controls the waveform amplitude by changing the reference voltage of DAC902 through DAC0832.The waveform is exported after amplification and filtering.Waveform parameters can be input and output through the touch screen and liquid crystal.Test results show that the system has high accuracy and good stability.

关 键 词：FPGA 三相 信号发生器 DAC902 

分 类 号：TN782[电子电信—电路与系统]