【摘要】 高功率微波源功率输出控制技术在微波化学领域相当重要。但是,由于产生大功率微波的技术和工艺相当复杂,特别是使用中微波磁控管工作条件的改变会导致输出功率的涨落。若没有完善的控制电路和控制方法要获得比较稳定的功率输出是难以达到的。而在实际应用中我们希望获得稳定的功率输出来使化学反应稳定进行。介绍一种单片机控制系统电路,该电路通过对输出功率进行采样、处理并运用增量式PID技术计算出控制参数,根据控制参数调节磁控管的磁场电流大小,最终达到控制大功率微波源输出功率的目的。该控制电路使功率源的输出功率得到自动控制,并获得了比较稳定的功率输出。更多还原

【Abstract】 The power output technology of HPM sources is very important in the field of microwave chemistry. But the technology of generating high power microwave is very complex, and especially the change of working condition of magnetron can lead to fluctuate the output power. So the steady output power is hard to be gotten without the perfect control circuit and control method. The steady output power makes chemistry reaction steady.An automatic system for power output of HPM sources controlled by microcontroller is introduced. By this system the output power sampling can be gotten and the control can be obtained by the increment manner of digital PID control arithmetic. According to the control parameter, we adjust the magnetic field current and control the output power.This system controls automatically the output power and makes it steady.更多还原