Micro-beam focusing control method and device

The invention relates to the field of focusing control, in particular to a micro-beam focusing control method and device, and the method comprises the steps: obtaining the working state information of an accelerator; inputting the working state information of the accelerator into a trained DQN model; receiving a target regulation and control instruction from the DQN model; and sending the target regulation and control instruction to a controlled accelerator, so that the controlled accelerator regulates and controls a beam according to the target regulation and control instruction. According to the method, a large number of simulation results are obtained after electromagnetic power supplies in different working states are subjected to different change instructions through a simulation model of a controlled accelerator in advance, a DQN original model is trained through the simulation results, and finally an excitation power supply capable of being automatically adjusted is obtained, so that a beam is strongly