重庆大学本科学生毕业设计（论文）
高速电主轴直接转矩控制仿真与分析
学 生： 学 号： 指导教师：
专 业：机械电子工程
重庆大学机械工程学院
二O一二年六月
Graduation Design(Thesis) of Chongqing University
Simulink and Analysis of High Speed Motorized Spindle Under DTC Control
Undergraduate: Supervisor: Prof.
Major: Mechanical and Electronic Engineering
College of Mechanical Engineering
Chongqing University
June 2012
重庆大学本科学生毕业设计（论文） 中文摘要
摘 要
随着数控技术及切削刀具的迅速发展，越来越多的用于机械制造的装备在不断向高速、高精度、高效率、高自动化发展，电主轴凭借机械主轴所不能替代的优异特点，成为最能适宜现代高性能数控机床的核心部件之一，并广泛用在多轴联动、多面体加工、并联机床、复合加工机床等诸多先进产品中，其质量、性能和技术水平在很大程度上决定了整机的质量、性能和水平。
目前使用高频交流异步电动机来驱动高速电主轴是主流，其控制方式通常采用变频调速方法。其中，直接转矩控制是一种发展于矢量控制技术之后的新型的高性能交流调速技术，其新颖的控制思想，简洁明了的系统结构，更适合于高速电主轴的驱动，更能满足高速电主轴高转速、宽调速范围、高速瞬间准停的动态特性和静态特性的要求，这使其成为交流传动领域的一个热点技术。
本文介绍了高速电主轴直接转矩控制的基本原理和控制系统的基本构成，并利用MATLAB/SIMULINK软件，构建了高速电主轴直接转矩控制的仿真模型。利用空间矢量的分析方法，直接在定子坐标系下计算与控制交流电机的的磁链和转矩，借助于双位模拟调节器产生PWM 信号，直接对逆变器的开关状态进行最佳控制，以获得转矩的高动态性能。通过设定并改变相应参数，得到仿真结果，并对结果进行分析。
关键词：高速电主轴，异步电动机，直接转矩控制，磁链，MATLAB/SUMILINK仿真
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重庆大学本科学生毕业设计（论文） ABSTRACT
ABSTRACT
As the rapid development of CNC technology and cutting tools, the equipment manufacturing industry in the world develop towards the directions of high speed, high precision and high efficiency rapidly. The high speed motorized spindle has become one of core components which are the most suitable for high-performance CNC machine tools, especially in multi-axis polyhedron processing, parallel machine, compound machine tools and other advanced products. It could not be substituted by the mechanical motorized spindle unit because of its outstanding features. The quality, performance and level of the electric spindle may largely descide the quality, performance and level of the machine.
High frequency induction motor is used in high speed motorized spindle predominantly, and the control method is frequency control.Direct Torque Control a new type of high-performance AC Variable Speed Technology which is developed following vector control technology. Because of the novel control idea and the sample system structure, the high speed motorized spindleismoresuitable for high-speed electric spindle driver.It meets the high-speed, wide speed range, high-speed instant quasi-stop dynamic characteristics and the requirements of the static characteristics and become a hot technology in the field of AC drive.
In this paper, the basic principle and structure of DTC have been introduced. And use Matlab/Simulink build to build the DTC simulation system mode. Calculating and control the AC motor flux and torque in the stator coordinate system Direct by using space vector analysis method.
The PWM signal produce by the double-bit analog regulator let he inverter switching state in optimal controlling lead to torque’s high dynamic performance.By setting the corresponding parameters, simulation results and the results were analyzed.
Keywords: High Speed Motorized Spindle ,Asynchronous Motor，Direct Torque
Control， Flux link，Matlab/Simulink Simulation
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