无刷直流电机(BLDCM)具有高功率密度、高效节能、高可控性、低噪声等优点，尤其适用于对占用空间有着严格限制的应用场合。针对微小型无人潜航器(UUV)内部空间狭小问题，对其电力驱动系统硬件方面进行小型化设计，在满足功率要求的前提下合理运用集成功能芯片对电路功能模块所占用空间的压缩，实现系统中控制电路、驱动电路的小型化设计。经功率试验验证，在微小型UUV内部空间限制条件下，所设计的电机驱动控制系统在速度控制精度、带载驱动性能方面均满足了微小型UUV对电动力的性能需求。

With the advantages of high power density, high efficiency, high controllability, and low noise, brushless DC motors (BLDCMs) are especially suitable for mini unmanned underwater vehicle (UUV) whose interior space is strictly limited. Hardware miniaturization design is carried out for the power drive system of mini UUV. On the premise of meeting the power requirements, the integrated functional chips are used to reduce the space of functional module to achieve the compactness of the control circuits and drive circuits of the system. It is verified by experiments that the speed control accuracy and load performance of the drive control system with satisfactory compactness can meet the requirements of the mini UUV.