【摘要】 传统的基于机理的整数阶无刷直流电机仿真模型和实际物理样机有较大差距。论文通过分析无刷直流电机的数学模型，在基于机理建模整数阶模型基础上引入分数阶微积分，将机理建模和数字建模相结合，提出一种新的无刷直流电机建模方法。首先根据物理样机建立基于机理的无刷直流电机仿真模型，然后采用基于输出误差的最小二乘法辨识出分数阶模型的参数，最后构造出无刷直流电机的分数阶模型。实验结果证明分数阶模型比整数阶模型有更好的对实际电机转速模拟效果。更多还原

【Abstract】 The traditional simulation model of BLDCM(Brushless Direct Current Motor)based on mechanism can’t accurately simulate the real motor. By analyzing the mathematical model of BLDCM and introducing fractional calculus on the basis of the integer order model of mechanism modeling,this paper proposes a new model of BLDCM by combining mechanism modeling with digital modeling. The mechanism simulation model of BLDCM is firstly constructed by establishing the experimental platform. Then,the parameters of fractional-order model are identified based on an output-error technique. And finally the fractional-order model of BLDCM is constructed. The experimental results show that the fractional order model is better than the integer order model in simulating the speed of real motor.更多还原