机电传动系统课程方案设计书说明书.docVIP

机电传动系统课程设计 汽车电动雨刷器自动控制系统设计 学生姓名 卓可钱 学 号 院 系 工学院机电系 专 业 机械电子工程 指导教师 吴继华 完成日期 2013- 10- 25 汽车电动雨刷器自动控制系统设计 摘要 本设计主要完成以传感作为检测器并通过软件的设计实现适时地对雨刷电机的转停、正转及反转，从而实现对汽车雨刷的自动控制。这次设计是传感器技术和现代控制技术在汽车制造业中的应用，并且设计中运用步进电机代替传统的雨刷电机，通过传感器检测到的雨量大小的信号，把信号输入单片机AT89C2051中通过程序控制步进电机的启动、电机转动速度及正反转时间。设计中运用TA8435H作为步进电机的驱动芯片，其是脉宽调制式斩波驱动方式，这样能克服步进电机在低频工作时，会有振动大、噪声大的缺点。此设计能免去驾驶员对雨刷的反复操作，提高了驾驶的安全性和舒适性，减少由于驾驶员对雨刷操作带来的交通事故，也大大提高了汽车雨刷运行的可靠度。 关键词 汽车雨刷自动控制系统；单片机；传感器；步进电机 AUTOMATIC CONTROL SYSTEM DESIGN OF THE CAR ELECTRIC WIPERS ABSTRACT The sensors designed mainly to the completion as a detector and software design to achieve a timely manner on the wipers to stop the motor, and are to reverse in order to achieve the automatic control of the vehicle wipers. The design is modern sensor technology and control technology in the automobile manufacturing industry in the application and use of the design of the stepper motor instead of the traditional wipers motor, sensor detected by the stepper motor instead of the traditional wipers motors, sensors detected by the size of the rainfall signal, the signal input in the SCM AT89C2051 Stepper motor controlled by the start of motor rotation speed and positive and time.DesignTA8435H use as a stepping motor rotation speed and positive and time. Design TA8435 use as a stepping motor driver chip, it is the PWM chopper drive, so overcome stepper motor in the low-frequency work, there will be vibration, noise major shortcomings. This design can be removed from the driver of the wipers of repeated operations, improve driving safety and comfort, reduce the pilot operation of the wipers the accident, greatly improving the reliability of the car wipers running. Key words SCM; Sensors; Stepper motor; Automatic wipers Control System Design 目录 1 前言 6 1.1 研究背景 6 1.2 国内外的研究现状 7 1.3 研究目的 8 2 汽车自动雨刷控制系统总体设计和主要特点 9 2.1 汽车自动雨刷控