基于单片机设计直流电机控制系统

发布时间：2018-02-25 09:16

本文关键词： 脉宽调制单片机调速直流电机　出处：《南京邮电大学》2017年硕士论文　论文类型：学位论文

【摘要】：直流电机在现代社会中被广泛用于在医疗设备、工业机械、通信雷达、论文设备等系统和各个行业中,虽然结构和交流电机相比的话,直流电机相对比较复杂,但最大的转矩以及启动转矩能够满足大部分系统的需求。因为直流电机启动功能很好,并且拥有良好的速度调节功能,速度和转向等参数可以在很宽的范围内被平滑控制,被许多行业认可。单片机的应用已经得到了广泛。本论文的主要目的是使脉宽调制信号的参数被成熟控制系统中常用的89C51单片机所控制,通过这个来控制常用的DC电机的转速。本设计中直流电机的驱动芯片模块是运用了专门的L298芯片,与单片机结合组成发生PWM信号以及直流电动机控制系统,通过C语言编程对课题关于89C51单片机中PWM因平率变化而产生变化,进而完成对电动机的正反转控制、速度调节等。另外,本设计联合运用的实际需求,测量了直流电机的转速,滤波电路将采集的数据的调节和处理后送入A/D转换器,对结果反馈到图像上,根据图像对PWM及频率影响的结论。论文的主要目的是使脉宽调制信号的参数被成熟控制系统中常用的51单片机所控制,通过这个来控制常用的单片机电机的转速实时的速度通过系统采用数码管进行显示。
[Abstract]:DC motor is widely used in medical equipment, industrial machinery, communication radar, paper equipment and other systems and industries in modern society, although the structure of DC motor is relatively complex compared with AC motor. But the maximum torque and starting torque can meet the needs of most systems, because the DC motor starts well and has a good speed regulation function. The parameters such as speed and steering can be smoothly controlled in a wide range. The main purpose of this paper is to make the parameters of pulse width modulation signal controlled by 89C51 single chip microcomputer, which is commonly used in mature control system. In this design, a special L298 chip is used to control the speed of DC motor. In this design, the PWM signal and DC motor control system are formed by the combination of L298 chip and single chip microcomputer. The change of PWM in 89C51 single chip microcomputer caused by the change of leveling rate is realized by C language programming. In addition, the speed of DC motor is measured by the actual requirement of this design, such as the positive and reverse rotation control and speed regulation of the motor, etc. The filter circuit adjusts and processes the collected data into the A / D converter and feeds the results back to the image. According to the conclusion of the influence of image on PWM and frequency, the main purpose of this paper is to make the parameters of pulse width modulation signal controlled by 51 single chip microcomputer, which is commonly used in mature control system. Through this to control the speed of the common single-chip microcomputer motor speed real-time through the system using digital tube display.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM33;TP273

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