Abstract: In the galvanometer scanner system，the motor should meet the requirement of 2°/200 Hz highfrequency response. It was inappropriate to utilize PID controller under the demands of small-inertia，lowamplitude，high-frequency. Therefore，many control algorithms are studied and applied，such as current

multisampling strategy，predictive current control algorithm，comprehensive dead-time compensation based on

multisampling，etc.，to increase the position and current loop bandwidth and system response speed. These control methods were integrated successfully and aiming at the customized permanent magnet synchronous motor

（PMSM），200 Hz low amplitude position vibration was realized in the galvanometer servo system. Process

coincidence occurs in predictive current control algorithm and comprehensive dead-time compensation based on

multisampling because of forward backward differential method，so the calculation amount does not increase

significantly. About the approaches related above，the simulation and experimental results verify the validity of the

theoretical analysis and their feasibility. These approaches also have reference significance in the application of

high frequency response of PMSM servo system.

      Key words: galvanometer motor；multisampling；predictive current control；dead-time compensation