多自由度球形感应电机创新设计及其参数化仿真分析*

doi:10.19562/j.chinasae.qcgc.2019.04.002

摘要/Abstract

摘要： 为满足多自由度驱动单元对全向汽车车轮、智能车多方位摄像头的功能需求,弥补集成多个传统电机来实现多自由度驱动所带来的结构复杂、控制困难和动态性能差等不足,在直线感应电机理论的基础上,提出一种多自由度球形感应电机,由3个弧面定子和球形转子组成,可实现两个自由度的驱动;与传统电机通过主轴输出转矩不同,球形感应电机因其特有的定子结构,直接由转子表面输出转矩。首先,对多自由度球形感应电机的尺寸参数进行设计;然后采用ANSYS Maxwell软件对多自由度球形感应电机进行建模和电磁瞬态仿真;同时对多自由度球形感应电机进行参数化分析,获得其在不同电压、不同频率下的特性曲线,揭示电机的转矩和转速控制机理。结果表明:多自由度球形感应电机的转矩和功率随着电压的升高而增大,而随着频率的升高,其转矩和功率下降,但转速范围变宽;所设计的球形感应电机,各项性能满足预期要求。

关键词: 球形感应电机, 多自由度, 设计, 仿真, 参数化分析

Abstract: For meeting the functional requirements of the multi-DOF drive unit for omnidirectional vehicle wheels and multi-orientation camera for smart car, and remedying the defects of structural complexities, control difficulties and poor dynamic performance caused by integrating multiple conventional motors to achieve multi-DOF drive, a multi-DOF spherical induction motor is proposed based on the theory of linear induction motor. The spherical induction motor is composed of three blocks of stator with arc surface and a spherical hollow rotor, and can realize two-DOF drive. Differing from the traditional motor, which output the torque through its shaft, the spherical induction motor directly output its torque from motor's surface due to the unique structure of stator. Firstly, the dimensional parameters of the multi-DOF spherical induction motor are designed in this paper. Then its model is built with ANSYS Maxwell software and a transient electromagnetic simulation is conducted. Meanwhile, a parametric analysis is performed on the spherical induction motor to acquire its characteristic curves at different voltages and frequencies and to reveal the mechanism of torque and rotation speed control for the motor. The results show that the torque and power of the multi-DOF spherical induction motor increase with the rise of voltage, while with the increase of frequency its torque and power fall and the range of rotational speed widens. The performances of the spherical induction motor designed meets the requirements preset.

Key words: spherical induction motor, multi-DOF, design, simulation, parametric analysis

邓涛, 苏振华, 唐鹏, 姜路. 多自由度球形感应电机创新设计及其参数化仿真分析^*[J]. 汽车工程, 2019, 41(4): 366-372.

Deng Tao, Su Zhenhua, Tang Peng , Jiang Lu. Innovative Design and Parametric Simulation Analysis of Multi-DOF Spherical Induction Motor[J]. Automotive Engineering, 2019, 41(4): 366-372.

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多自由度球形感应电机创新设计及其参数化仿真分析^*

Innovative Design and Parametric Simulation Analysis of Multi-DOF Spherical Induction Motor

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