【作者】 黄明星；

【导师】 叶云岳；

【作者基本信息】 浙江大学 ， 电机与电器， 2005， 硕士

【摘要】 直线电机是一种将电能转换成直线运动机械能,而不需要任何中间转换机构的传动装置,它广泛地应用于工业、民用、军事及其他各种具有直线运动的场合。直线电机的应用研究是直线电机研究中最重要的内容之一,也是研究直线电机的最终目的。本文即阐述了直线电机在工业中的一个应用实例——合金粉末铺粉装置,它来源于内燃机新一代轴瓦材料——铜铅钢带的生产实际需要。本文以铺粉装置的设计为主线,就机械结构设计、直线感应电机的设计计算、直线电机磁场的有限元分析、直线电机的控制等问题展开了较详尽的论述。 开篇首先介绍了直线电机的历史发展过程、直线电机的类型,以及直线电机的原理、等效电路和特性等基础知识。接着,对铺粉装置设计的几个方面展开了讨论,主要包括如下几方面内容: 1.给出铺粉装置的设计要求;提出铺粉装置的机械结构设计思路;并运用机械设计和机械制图方法,绘制了铺粉装置的机械设计图。 2.对扁平型直线感应电动机(主电机)进行电磁参数的设计计算;运用ANSYS8.1有限元分析软件对主电机的磁场进行二维分析,给出磁力线图、气隙中部磁密曲线等重要图形,并应用虚功法与麦克斯韦应力张量法对电机的电磁力做了计算,与传统设计计算值进行了比较。 3.设计铺粉装置的驱动控制系统,应用可编程控制器(PLC)完成了整个装置的时序控制设计,并针对主电机进行了变频调速控制系统的软硬件设计。 最后,给出了铺粉装置的试验结果,对铺粉装置的设计进行了总结。更多还原

【Abstract】 Linear motor is a sort of driving device that can transit electric energy to mechanical energy of linear movement without any switching mechanism. It is widely applied in industry, civil use, military use, and other occasions with linear movement. The research of linear motor application is one of the most important research domains of linear motor, and is also the ultimate purpose of studying linear motor. This dissertation expounds an instance of linear motorapplication in industry------ laying alloy powder device. The subject originatesthe production process of copper, lead, or steel strips which is a new kind of bearing bush’s material. The main line of the dissertation is the design of laying powder device. It involves the machine structural design, the design of linear induction motor, the finite element analysis of linear motor’s electromagnetic field, and the control system of linear motor.Firstly, the dissertation introduces the developing process, the set type, the fundamentals, the equivalent circuit, and the characteristic of linear motor. Then it discusses several aspects of the design of laying powder device in detail. The main content of the dissertation is as follows.1. The dissertation describes the technical requirement of laying powder device, and brings forward the idea of structural design. Then the mechanical design drawing of laying powder device is given.2. The dissertation calculates the electromagnetic parameters of the planar linear induction motor that is also intituled as main motor, and analyzes the two-dimension electromagnetic field of main motor with ANSYS8.1 software. Through finite element analysis, we obtain the magnetic figure and the curve diagram of flux density of air gap’s midst. In addition, ANSYS8.1 software calculates the electromagnetic force of main motor with Virtual Work and the Maxwell Stress Tensor methods. We contrast the magnetic force calculated by finite element method with that calculated by tradition method.3. The control system of laying powder device is devised. Programmable Logic Controler(PLC) is used to implement the time sequence control of the entire device. The hardware and software’s design scheme of frequency control system are given for controlling the main motor.Finally, the experimental results are shown, and the entire design process of laying powder device is summarized.更多还原