论文标题:五相混合式步进电动机控制技术研究
Research on Control Technology for Five-Phase Hybrid Stepping Motor
论文作者
论文导师 刘景林,论文学位 硕士,论文专业 电机与电器
论文单位 西北工业大学,点击次数 25,论文页数 66页File Size4907K
2007-03-01论文免费下载 http://paper.dic123.com/lunwen_285015647/
Hybrid; Stepping Motor ; Driving System; Constant-current Chopping; torque-frequency
混合式步进电动机总体性能优于其他种类的步进电动机，是工业上应用最为广泛的步进电动机品种，本文以定子10极、转子50齿的五相混合式步进电动机为研究对象，进行了系统的研究。 本文研究了混合式步进电动机原理结构和运行特性，由于混合式步进电动机结构特殊，状态方程高度非线性且各状态变量相互耦合，使得数学公式难以准确的表达。据此提出了考虑饱和非线性的五相混合式步进电动机的数学模型，并用MATLAB对相电流进行了仿真研究，本文在分析五相混合式步进电机的数学模型的基础上，推导出了电机运行矩频特性的计算公式，并在考虑磁路饱和的情况下，对绕组电感参数做了非线性分析和处理。在MATLAB的环境下对其进行了仿真，仿真结果基本符合实际情况。 步进电机的运行性能与步进电机的驱动器的优劣密切相关，本文在研究各种驱动技术的基础上，设计了一个五相混合式步进电机斩波恒流驱动系统，通过单片机使系统以简洁的电路实现了对电机绕组电流的数字闭环控制，通过复杂可编程逻辑器件(CPLD)实现了五相步进电机的环形分配。并介绍各部分功能模块的功能，叙述了硬件设计和软件实现。 实验测试表明：系统硬件和软件设计合理可行，运行性能良好。该方案具有体积小，成本低，实用性强等优点，具有较高的工程应用价值。
The hybrid stepping motor has the best performance among all kinds of stepping motor, it"s also the widely used kind of stepping motor now. This dissertation does some embedded investigation focused on the 5-phase hybrid stepping motor which has 10 poles and 50 tooth on the rotor.This paper investigates the structure of the hybrid stepping motor, because of the hybrid stepping motor"s special structures, the state variables" non-linearity and strong coupling among these variables, makes the mathematical modeling of the five-phase hybrid stepping motor hard to express. This paper considers the saturation and gives a mathematical model of five-phase hybrid stepping motor ,then in MATLAB ,a simulation for the current is made. Based on it , a calculation formula about the torque-frequency characteristics of this motor has been deduced. Considering saturation of magnetic circuit, it analyzes and nonlinearizes the parameters of winding inductance. In MATLAB, the model is simulated, and the simulation result gives a good agreement with the actual character.Based on the varieties of the drive technique, this paper designs a driving system of Hybrid Stepping Motor with Constant-current Chopping. It realizes digital closed loop control with simple circuit by single-chip, and Complex Programmable Logic Device (CPLD) is adopted to realize circular distributor. It introduces every part"s function, and depicts the design of hardware and software.The experimental results indicates that the design of hardware and software is reasonable and feasible, successfully completes the development task, The project has some advantages of little bulk, low cost and convenient practice, so it is goodvaluable of realization.
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