Design and Analysis of a 2-DOF Split-Stator Induction Motor

Abstract

A two degrees of freedom (2-DOF) actuator capable of producing linear translation, rotary motion, or helical motion would be a desirable asset to the fields of machine tools, robotics, and various apparatuses. In this paper, a novel 2-DOF split-stator induction motor was proposed and electromagnetic structure parameters of the motor were designed and optimized. The feature of the direct-drive 2-DOF induction motor lies in its solid mover arrangement. In order to study the complex distribution of the eddy current field on the ferromagnetic cylinder mover and the motor's operating characteristics, the mathematical model of the proposed motor was established, and characteristics of the motor were analyzed by adopting the permeation depth method (PDM) and finite element method (FEM). The analytical and numerical results from motor simulation clearly show a correlation between the PDM and FEM models. This may be considered as a fair justification for the proposed machine and design tools.Index Terms-Finite element method (FEM), induction motor, permeation depth method (PDM), solid rotor, split stator, two degrees of freedom (2-DOF).

Equivalent Circuit Model of Novel Solid Rotor Induction Motor with Toroidal Winding Applying Composite Multilayer Theory

“…(3) The magnetic field components H xi , H yi and B yi ( i = 1 ∼ N) are calculated by the transfer matrix (7) and boundary condition (8). Thus, the resultant H i = H 2 xi + H 2 yi is derived.…”

“…The common equivalent magnetic circuit method has difficulty analyzing the electromagnetic field and calculating the equivalent circuit parameters. Therefore, finite element methods (FEMs) are generally used to analyze composite SRIM [7][8][9]. However, FEMs require a large amount of calculation time.…”

Dynamic magnetic‐coupling effect of two‐degrees‐of‐freedom direct drive induction motor

“…In this process, the interaction between the two magnetic fields and two motions is inevitable in the motors. In previous works, an integrated 2DoF motor named 2DoF direct drive induction motor was proposed and analyzed by adopting the permeation depth method and the composite multilayer method [10,11]. However, the rotary and linear part of the motor was design respectively.…”

Mathematical Model of Two-Degree-of-Freedom Direct Drive Induction Motor Considering Coupling Effect

“…For example, modeling coupling effects is a significant challenge as it requires a solution considering the two degrees of mechanical freedom in the motion. In this paper, a novel two-degree-of-freedom direct drive induction motor (2-DoFDDIM) was analyzed [18][19][20]. A 2-D analytic model and a 3-D finite element model of the motor were established to analyze the magnetic coupling and motion coupling between rotary part and linear part.…”