液质悬浮式永磁多自由度电机流体分析与仿真  

FluidAnalysis and Simulation of Liquid Suspension Type Permanent Magnet Multi-DOF Motor

作　　者：李争 邢殿辉 智若东 王群京[2] LI Zheng;XING Dian-hui;ZHI Ruo-dong;WANG Qun-jing(School of Electrical Engineering,Hebei University of Science and Technology,Hebei Shijiazhuang 050018,China;National Engineering Laboratory of Energy-Saving Motor & Control Technique,Anhui University,Anhui Hefei 230039,China)

机构地区：[1]河北科技大学电气工程学院,河北石家庄050018 [2]安徽大学高节能电机及控制技术国家地方联合工程实验室,安徽合肥230039

出　　处：《机械设计与制造》2019年第6期127-131,共5页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51577048,51637001,51107031);河北省留学人员科技活动项目择优资助项目(C2015003044);高节能电机及控制技术国家地方联合工程实验室开放基金资助项目(KFKT201601);河北省增材制造产业技术研究院开放课题资助项目

摘　　要：多自由度执行机构由于其结构简单、效率高、能耗低以及易于控制等优点受到了越来越多的重视,拥有广泛的应用前景。介绍了一种新型液质悬浮永磁多自由度电机的基本结构及其工作原理,在分析电机的流体理论的基础上,建立了电机雷诺方程,并进行了简化,给出了边界条件。结合流体力学仿真软件,对电机液体油膜物理特性和数学模型进行了分析,并计算了不同转速和偏心率下的液体油膜压力分布情况及油膜对转子的阻力矩。分析计算结果为永磁多自由度电机的优化设计和控制系统设计提供了理论基础和数据支持。Multi-degree-of-freedom actuator has been attracting more and more attention due to its simple structure,high efficiency,low energy consumption and the advantage of easily be controlled,which also has a wide application prospects.The basic structure and operation principle of a novel type of liquid suspension multi-degree-of-freedom permanent magnet motor are discussed.On the basis of liquid theory analysis of the motor,the Reynolds equation and boundary condition of the motor are established,which has been simplified.Combined with the fluid dynamics simulation software,the physical properties and mathematical model of the oil film are analyzed,the liquid oil film pressure distribution and drag torque of oil film on the rotor are calculated in the condition of different eccentricity and rotational speeds.The results provide the theoretical and data support for optimization design and control system design of the PM multi-DOF motors.

关 键 词：永磁 液质悬浮 流体模型 多自由度电机 仿真 

分 类 号：TH16[机械工程—机械制造及自动化] TP391.9[自动化与计算机技术—计算机应用技术]