【摘要】 针对信号发生芯片组成的信号发生器波形单一,幅值、频率等参量不便调节,且信号峰峰值不能满足磁通门的激励信号对峰峰值的要求的缺点,采用数字芯片CPLD为核心元件构建大信号幅值的正弦波和方波互换电路,以产生幅值、频率等参量可调的正弦波或方波信号.设计了基于CPLD的正弦波和方波转换电路,进行了CPLD相关功能模块的程序设计与实验测试,实验结果验证了转换电路的功能.更多还原

【Abstract】 To overcome the inconvenience of adjustment of the parameters of signal generator, such as waveform,amplitude and frequency,and to meet the requirements of fluxgate excitation on peak value,CPLD was adopted as key components to generate large amplitude sine/square wave signal with adjustable amplitude,frequency,and other parameters.The sine/square wave conversion circuits based on CPLD were designed,and the corresponding functional module was programmed and tested.The experimental results verified the function of the conversion circuit.更多还原