基于DSP的无刷直流电机无位置传感器控制方法研究

发布时间：2018-04-16 19:47

本文选题：BLDCM + 反电势法　；参考：《新疆大学》2017年硕士论文

【摘要】：伴随着半导体电子技术的发展,出现了新型机电一体化的BLDCM(BLDCM——Brushless Direct Current Motor)。BLDC结合了目前的电力电子控制技术、控制理论和电机控制技术等三种技术[1]。它拥有优越的调速性能:控制性能好、调速范围宽、起动转矩大等。其应用范围广。BLDCM分为有位置BLDCM和无位置BLDCM。无位置BLDCM又比有位置BLDCM具有许多优势:节约了成本,减小了电机的体积,并开阔了BLDCM的应用范围。本文在研究了BLDCM的基本构造及其工作原理,以此搭建了数学模型及其传递函数。接着研究了无位置BLDCM的控制原理及其方法。本文通过对反电势过零检测法的研究发现,传统反电势过零检测法获取过零信号有干扰,在此基础上本文采用了一种关断检测反电势过零的方法。然后在MATLAB上搭建了Simulink仿真,进行了测验分析,验证了此方法的可行性与可靠性。根据仿真以及控制框图设计了硬件平台。本文硬件控制系统以TI公司的DSP型号为TMS320F28335的芯片为主控芯片。接着在DSP集成开发环境CCS6.0(2000)下进行了软件设计,主要采用C语言和模块化编程模式进行程序的编写、调试等。最后,本文给出了相关的实验的波形和结果,根据实验结果表明:在关断检测法下,BLDCM能快速启动、平稳运行。
[Abstract]:Along with the development of semiconductor electronic technology, a new type of mechatronics BLDCM(BLDCM--Brushless Direct Current Motor).BLDC has emerged, which combines the current power electronic control technology, control theory and motor control technology.It has excellent speed regulation performance: good control performance, wide speed range, large starting torque and so on.Its application range is wide. BLDCM can be divided into BLDCM with location and BLDCM without location.BLDCM without position has many advantages over BLDCM with position: it saves cost, reduces the volume of motor, and broadens the application range of BLDCM.In this paper, the basic structure and working principle of BLDCM are studied, and the mathematical model and its transfer function are built.Then the control principle and method of position-free BLDCM are studied.In this paper, it is found that there is interference in the zero-crossing signal obtained by the traditional anti-EMF zero-crossing detection method. On the basis of this, a turn-off method is used to detect the zero-crossing signal.Then the Simulink simulation is built on MATLAB, and the feasibility and reliability of the method are verified.According to the simulation and control block diagram, the hardware platform is designed.The hardware control system of this paper takes the DSP chip of TI Company as the TMS320F28335 chip as the main control chip.Then the software design is carried out under the DSP integrated development environment CCS6.0 / 2000, which mainly uses C language and modular programming mode to program, debug and so on.Finally, the waveform and results of the experiment are given. The results show that BLDCM can start up quickly and run smoothly under turn-off detection.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM33;TP273

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