基于ADuc812单片机的数控调谐YIG激励器

摘要

In order to supply YIG filter with stable and reliable stimulating current, use DA transmission chip to transfer numerical signal into analog voltage signal, control constant current circuit to create YIG filter stimulating current signal. Based on ADUc812 single chip, design a YIG stimulator to control tune YIG ball resonance frequency through controlling output current. At the same time, use 12 bit parallel interface to communication, and adopt compensation mode based on hardware and software to temperature compensation. Use EEPROM in ADuc812 chip as compensation data memory. The result shows that the system running is stable and reliable and it is applied into project at present, and achieved marvelous economic effects.%为使YIG滤波器提供稳定、可靠的激励电流,利用DA转换芯片将数字信号转换为模拟电压信号,控制恒流源电路产生YIG滤波器的激励电流信号,基于ADuc812单片机设计一种通过控制输出电流调谐YIG小球的共振频率的YIG激励器.同时采用12位并行接口通讯,采用硬件和软件相结合的补偿方式进行温度补偿,使用ADuc812芯片中EEPROM作为补偿数据存储器.结果表明:该设计系统运行稳定可靠,目前已经成功应用于某工程项目中,取得了较好的经济效益.