This article focuses on the property that the tracking bandwidth of ship borne control servo system for large ship is relatively fixed. It starts from analyzing the system of permanent magnet DC servo motor as an executive component, and introduces fuzzy control theory into the speed of digital power amplifier precise motion control system to achieve a close tracking under the stability of the open loop control, and the best state of system bandwidth and tracking accuracy.%本文针对船载大型测控系统伺服跟踪带宽相对固定的特点。从系统中直流伺服永磁电机为执行元件进行分析，将模糊控制理论引入数字型功放精确控制系统的运动速度。在稳定的开环控制情况下实现紧密跟踪目标能力，达到系统带宽和跟踪精度的最佳状态。
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