毕业设计：帆板控制系统设计.docVIP

 PAGE \* MERGEFORMAT 27 张家界航空工业职业技术学院 毕业设计报告 设计题目： 帆板控制系统 专业名称： 电子信息工程技术 学生班级： 学生姓名： 学生学号： 指导教师： 2012年4月8号 张家界航空工业职业技术学院毕业设计（论文） 摘要： 本帆板控制系统由单片机ATMEGA328作为帆板转角的检测和控制核心，实现按键对风扇转速的控制、调节风力的大小、改变帆板转角θ、液晶显示等功能。引导方式采用角度传感器感知与帆板受风力大小的转角θ的导引线。通过PWM波控制电机风扇风力的大小使其改变帆板摆动的角度θ。风扇控制核心采用L298电机驱动模块，用ATMEGA328单片机为控制核心，产生占空比受数字PID算法控制的PWM脉冲，实现对直流电机转速的控制，同时利用光电传感器将电机速度转化成脉冲??率反馈到单片机中，实现转速闭环控制，达到转速无静差调节的目的。MMA7455三轴加速传感器把角度输出信号传送给ATMEGA328单片机进行处理。 关键词： ATMEGA328，MMA7455，PWM波，PID算法 Abstract: The This windsurfing control system by the microcontroller ATMEGA328 as windsurfing corner detection and control of the core to achieve the size of the buttons for fan speed control, adjust the wind, changing windsurfing corner θ, LCD functions. Guide to angle sensor perception and windsurfing by the wind the size of the corner of θ guides. PWM wave control the size of the motor fan wind to change the the windsurfing swing angle θ. Core fan control L298 motor driver module, ATMEGA328 microcontroller to control the core, resulting in a duty cycle of the digital PID control algorithm of the PWM pulse of the DC motor speed control, while taking advantage of the photoelectric sensor to the motor speed is converted into a pulse frequency feedback to the MCU, the speed closed-loop control to achieve the speed static error adjustment purposes. The MMA7455 triaxial acceleration sensor angle output signal transmitted to the ATMEGA328 microcontroller for processing. Keywords: ATMEGA328, MMA7455 PWM wave, the PID algorithm 张家界航空工业职业技术学院毕业设计（论文） 目录 1. 系统设计 ························································3 1. 设计要求 · ······················································3 1.1.1 基本要求 ····················································3 1.1.2 发挥部分 ·····················································4 1.1.3 说明 ·························································4 1.2总体设计方案 ············