【作者】 李岩； 高宏； 李宏； 彭毅； 黄勇；

【Author】 Li Yan Gao Hong Li Hong Peng Yi Huang Yong Xi’an Shi You University China air power research center

【机构】 西安石油大学； 中国空气动力研究中心；

【摘要】 介绍了基于4片AD9850设计的高精度信号发生器,通过计算机串口发送频率相位控制字,经过MAX232电平转换,再由单片机对数据格式转换后送入AD9850,从而产生4路频率可在1~6kKHz内连续可调相序正序与反序可变,且相位依次互差45°的正弦波,文中不但详细介绍了该多相位正弦波信号发生器的原理组成,而且给出了系统框图和程序流程图及实用效果。更多还原

【Abstract】 The design of the high-precision signal generator based on AD9850 is analyzed in this thesis. The computer serial-port send out frequency phase control words,which are level transformed by MAX232.Then singlechip change the data format and transmit it into AD9850. This causes four roads frequency which can be continually regulated from 1KHz to 6KHz.The phase is changeable between positive sequence and negative sequence and each phase has a 45?sine wave deviation from the last. The text not only introduces the components and work principles of multi-phase sine wave signal Generator in detail but also supplies its system chart, programme flowchart and practical results .更多还原