毕业论文：基于单片机的步进电机控制电路板设计.doc

 ******************* 毕业设计论文 论文题目：基于单片机的步进电机控制电路板设计 系 部 自动控制系 专 业 电气自动化 班 级 自动化20651班 学生姓名 王小梅 学 号 2010065125 指导教师 孙晓燕 ******************************摘 要 随着微电子和计算机技术的发展，步进电机的需求量与日俱增，它广泛用于打印机、电动玩具等消费类产品以及数控机床、工业机器人、医疗器械等机电产品中，其在各个国民经济领域都有应用。研究步进电机的控制系统，对提高控制精度和响应速度、节约能源等都具有重要意义。 步进电机是一种能将电脉冲信号转换成角位移或线位移的机电元件，步进电机控制系统主要由步进控制器,功率放大器及步进电机等组成。采用单片机控制,用软件代替上述步进控制器,使得线路简单,成本低,可靠性大大增加。软件编程可灵活产生不同类型步进电机励磁序列来控制各种步进电机的运行方式。 本设计采用单片机对步进电机的控制， Abstract With the development of microelectronics and computer technology, increasing demand for stepper motor, which is widely used in printers, electronic toys and consumer products such as CNC machine tools, industrial robots, medical equipment and electrical products, and its various national fields are applied. Of stepper motor control system to improve the control accuracy and response speed, energy conservation and so important. Stepper motor is an electric pulse signals can convert the angular displacement or linear displacement of the mechanical and electrical components, stepper motor control system consists of stepper controller, stepper motor power amplifier and so on. Use MCU control, the stepper controller instead of using software to make simple circuit, low cost, reliability greatly increased. Software programming flexibility to produce different types of stepping motor excitation sequence to control the operation of the various stepper motor mode This design is used AT89C51 of Stepping motor control, through the IO port as a square wave output of the timing of step motor control signal, the signal through the ULN2003 driver chip stepper motor; the same time, with four buttons to the status of the motor control, and dynamic display with digital control motor speed. System consists of hardware and software design