从恒功率的基本定义出发 ,提出实现电机恒功率运行的数字控制方法。基于该方法的数学模型的强耦合性 ,该方案中引入了模糊控制策略 ,设计了稳定的模糊控制器。实验和仿真结果证明了该方案的正确性和可行性和较强的鲁棒性。该方法无需改动硬件 ,操作方便 ,为实现电机恒功率运行提供了新的途径。这种设计思路也适用于其它电机 Based on the basic definition of constant power, a digital control method to realize the constant power operation of the motor is proposed. Based on the strong coupling of the mathematical model, a fuzzy control strategy is introduced and a stable fuzzy controller is designed. Experimental and simulation results show that the scheme is correct and feasible and robust. The method does not need to change the hardware, easy to operate, provides a new way for the realization of the motor constant power operation. This design idea also applies to other motors