文档介绍：毕业设计( 论文)
题目基于PWM的按摩机传动控制电路设计
作者
系别
专业电气工程及其自动化
二 O O 九年三月二十一日
摘要
本设计在描述按摩机功能的基础上,完成了一个基于PWM(脉冲宽度调制)调速的按摩机传动控制系统电路的设计。本设计以单片机技术和直流电机PWM调速技术为基础提出了控制系统框架和具体设计技术方案,从硬件电路方面阐述了控制系统的总体实现,结合硬件提出软件设计思想,利用汇编语言将之实现,并利用按键,蜂鸣器,氖灯,LED数码管等外围设备为用户提供服务,实现人机交互和按摩功能。通过按键,用户可以让按摩机工作在最具舒适的按摩工作方式和振动速度上;利用蜂鸣器来告警或提示按摩完成;利用氖灯显示当前的工作状态;利用LED数码管显示电机当前的转速。本设计是基于单片机的PWM传动控制电路的软硬件结合, PWM调制原理实现技术较复杂,硬件上利用MOSFET(金属氧化半导体场效应晶体管)来实现,软件上利用交流检测结果,完成单片机定时器延时和查表功能。本设计不但结合了单片机开发技术,而且综合运用了直流电机PWM技术、交流检测技术以及LED驱动与控制技术,实现了按摩机控制系统人机交互。
关键字:PWM MOSFET 交流检测技术 LED驱动与控制
Abstract
The design, in describing the foundation of massage machine function, completed a spread to move and control system electric circuit, which based on PWM (Pulse Width Modulated). With techniques of SCM (Single Chip puter) and PWM of DC (Direct Current) motor, the design put forward the control system frame and the concrete design technique projects at first. Then elaborated the total realization of the control system from the hardware electric circuit. Next, combined the hardware to put forward the mind of software design, and made use of Assembly language carrying out it. Finally, made use of the peripherals, such as the key, the buzzer,the neon lamp and the LED (Light Emitting Diode) figures tube, providing the service for the customer, and carry out the massage function and interaction for both the machine and the person. The customer can let massage machine work on fortable method and vibration speeds by the key; Make use of the buzzer warning or hinting the massage has finished; Make use of neon lamp shows the current work appearance; And use the LED figures tube to manifestation present speed of motor. The design is a software and hardware’bination that based on the PWM of spread to move and control system electric circuit. It’s plicated to carry out the technique of PWM. On the hardware, make use of the MOSFET (Metal Oxide Semiconductor Field Effect Transistor) carrying out it; On the software, make use of the result of