导弹角速度编码器组合测试系统信号源设计

Design on signal source of certain missile angle-speed combination coder

基于计算机串行通信总线,在单片机的控制下使用一片FPGA芯片控制DDS模块完成了信号源的设计,同时控制DDS芯片AD9959完成任意波形的产生以作为备用的信号源。基于QuartusII7.2软件环境和VHDL语言完成了软件程序的设计。仿真和试验表明,该信号源稳定性好,信号精度及分辨率高,频率、相位、幅度可灵活调整,具有很好的通用性,能够满足角速度编码器组合测试系统的性能指标和技术要求,具有很好的应用价值。

Under the control of the SCM and one FPGA chip, the signal source is designed on a DDS module based on computer serial communication bus. At the same time, a spare signal source based on the chip AD9959 is designed. The software program of signal source is designed with VHDL language in QuartusⅡ 7.2. The simulation and experiment show that the output signal has a good stability, a high resolution and accuracy. The frequency, amplitude and offset of the signal are flexible and adjustable,too. The signal source can meet the technical requirements and performance index of the certain missile angle-speed combination coder. It has a good application value.