可控磁路永磁悬浮带式输送机支撑系统研究  

Study of Controlled Magnetic Circuit Permanent Magnetic Levitation Belt Conveyor Support System

作　　者：胡坤[1,2,3] 钱王钱 蒋浩 杨金晗 朱勤勤 HU Kun;QIAN Wangqian;JIANG Hao;YANG Jinhan;ZHU Qinqin(State Key Lab.of Mining Response and Disaster Prevention and Control in Deep Coal Mines,Anhui Univ.of Sci.and Technol.,Huainan 232001,China;Inst.of Environment–Friendly Materials and Occupational Health,Anhui Univ.of Sci.and Technol.,Wuhu 241000,China;School of Mechanical Eng.,Anhui Univ.of Sci.and Technol.,Huainan 232001,China)

机构地区：[1]安徽理工大学深部煤矿采动响应与灾害防控国家重点实验室,安徽淮南232001 [2]安徽理工大学环境友好材料与职业健康研究院,安徽芜湖241000 [3]安徽理工大学机械工程学院,安徽淮南232001

出　　处：《工程科学与技术》2023年第6期191-201,共11页Advanced Engineering Sciences

基　　金：国家自然科学基金项目(52274153,51874004);芜湖市研究院研发专项基金项目(ALW2021YF10);安徽省重点研发计划(202004a07020043)。

摘　　要：针对传统带式输送机托辊轴承产生的旋转阻力等问题,提出一种由伺服电机、双径向永磁体、导磁体、永磁贴片及托辊轴组成的新型可控永磁支撑系统。首先,根据有限单元法(FEM)建立单点可控永磁支撑系统模型,通过Maxwell仿真软件优化影响系统磁场分布的关键结构参数,并分析双径向永磁体不同旋向对系统悬浮力的影响规律。然后,采用磁路法对单点可控永磁支撑系统中导磁体的磁通路径进行区域划分,建立各处磁通路径模型,得出导磁体腿部磁通量解析式,利用等效磁荷法确定永磁贴片表面的磁感应强度,结合永磁体间作用力关系,建立单点可控永磁支撑系统的悬浮力模型。其次,利用Maxwell仿真软件确定理论计算模型中悬浮力修正系数λ1与气隙修正系数ε的数值,并搭建单点可控永磁支撑系统实验平台,获取系统悬浮力特性关系并验证理论计算模型的准确性。最后,建立单点可控永磁支撑系统的动力学模型并分析系统稳定悬浮的可行性,结合两相混合式电机的控制系统,进行系统比例积分微分(PID)算法的控制研究。仿真与实验结果均表明,系统气隙响应能稳定于设定值处,满足可控性要求,可以较快地实现稳定悬浮,为低阻力带式输送机研究提供一定理论基础。To address the problem of rotational resistance generated by the traditional belt conveyor roller bearings,a new controlled permanent magnet support system is proposed,which consist of servo motor,double radial permanent magnet,magnetic guide,permanent magnet patch and roller shaft.First,we develop a model for the single-point controlled permanent magnet support system by the finite element method(FEM),and optimize the key structural parameters affecting the magnetic field distribution of the system by a simulation software of Maxwell electromagnetic.We analyze the influence of different spinning directions of the double radial permanent magnets on the suspension force of the system.Second,the magnetic path method is used to divide the magnetic flux paths of the magnetic conductors in the single-point controllable permanent magnet support system,followed by establishing the magnetic flux path model at each place to derive the analytic formula for the magnetic flux of the magnetic conductor legs.We employ the equivalent magnetic charge method to determine the magnetic induction intensity of the permanent magnet patch surface,and establish the levitation force model of the single-point controllable permanent magnet support system by considering the relationship of acting forces between the permanent magnets.Third,Maxwell electromagnetic simulation software is used to determine the suspension force correction coefficientλ1 and the air gap correction coefficientεin the theoretical calculation model.A experimental platform of single-point controllable permanent magnet support system is built to obtain the relationship of suspension force characteristics and verify the theoretical calculation model.Finally,a dynamics model is established for the single-point controllable permanent magnet support system to analyze the feasibility of its stable suspension.The PID algorithm is investigated by integrating the control systems of a two-phase hybrid motor.Both simulation and experimental results show that the system air gap

关 键 词：径向磁化 有限单元法 结构参数 悬浮力 比例积分微分算法 

分 类 号：TD528[矿业工程—矿山机电]