Aiming at the problem of low performance index of two-degree-of-freedom direct drive induction motor（2 DoFDDIM）with solid rotor structure

a slot cast and layer with copper cast mover structure is designed.From the results of finite element analysis

it can be seen that the slot cast and layer with copper cast mover structure can effectively improve the rotor eddy current loop and thus improve the performance index of the motor.In order to select the optimal slotting parameters of the rotor

taking the 2 DoFDDIM rotating motion part as the research object

and the Taguchi method was introduced to realize the multi-objective optimization of 2 DoFDDIM.The characteristics such as the torque

torque ripple

efficiency

power factor

and torque-current ratio of the motor are selected as the optimization objectives

and the parameters that have a greater influence on the optimization objectives and the range of influence factors of the parameters are determined.An experimental orthogonal Matrix was established to calculate the specific gravity of the effect of the factor level of parameters on the target performance

so as to determine the optimal parameters.Comparing the characteristics before and after optimization

the results show that the comprehensive performance of 2 DoFDDIM is greatly improved after optimization.