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设计了一种用于直接驱动作动器(DDA)的电气/机械混合式四余度无刷直流力矩电动机。该电机具有同轴的两段定、转子,每段定子中隔槽嵌放两套绕组,从而构成电气/机械混合四余度。并且相对于采用机械传动装置连接两个电气双余度的设计方案,该电机体积、重量小,不存在机械传动装置间隙造成的非线性影响,降低了对余度间转矩均衡的要求,可以通过错极结构来减小定位转矩。设计过程中采用磁路法和磁场有限元计算对该电机进行了详细的分析计算。根据分析计算结果设计制造了原理样机,并进行了电机本体和DDA系统的性能实验。电机本体实验结果与分析计算的结果具有良好的吻合性;DDA系统空载时的电机实验结果表明该电机具有良好的动态特性。
An electrical / mechanical hybrid four-residue brushless DC torque motor designed for a direct-drive actuator (DDA) was designed. The motor has a coaxial two-stage stator and rotor, each stator slotted two sets of windings, which constitute the electrical / mechanical mixing four redundancy. Compared with the design of two electrical double redundancy using mechanical transmission, the motor has small volume and weight, non-linearity caused by the mechanical transmission gap, reduces the requirement for balance of torque between the redundancy, By positioning the wrong poles to reduce the positioning torque. In the design process, the magnetic circuit method and the magnetic field finite element calculation are used to analyze and calculate the motor in detail. According to the result of the analysis and calculation, the prototype of the prototype is designed and manufactured, and the performance experiments of the motor body and DDA system are carried out. The experimental results of the motor are in good agreement with the results of the analysis and calculation. The motor experiment results show that the motor has good dynamic characteristics.