基于ATmega128单片机的车轮平衡机检测系统  

Wheel Balancer Measurement System Based on ATmega128 MCU

作　　者：张万利[1] 毛乐山[2] 倪凯[1] 李鹏[1] 

机构地区：[1]清华大学精密仪器与机械学系,北京100084 [2]清华大学深圳研究生院,广东深圳518055

出　　处：《仪表技术与传感器》2005年第6期35-37,共3页Instrument Technique and Sensor

摘　　要：研究车轮平衡机的力学模型,介绍车轮不平衡量检测的原理与方法,以ATmega128单片机为核心进行软硬件设计,采用硬件滤波和数字互相关滤波结合的方法,得到与主轴转速同频的振动分量的幅值和相位,并进一步求出车轮两个加重面的不平衡量。结果表明:系统经校准后,可以在7s内一次检定各种型号小车轮胎的不平衡量,其平衡精度、重复性、稳定性等各项技术指标均达到国际水平。The mechanical model of wheel balancer was studied and the principle and method of measuring unbalanced wheel were presented.The hardware and software were designed based on ATmega128 MCU,and the amplitude and the phase of the vibration vector synchronous to main-shaft rotating were found after hardware filtering and digital cross-correlation filtering,then the unbalanced weight on the two weighting planes was resolved.The experimental results show that this type of balancer can measure the unbalanced weight of car type tyre one-time within seven second after calibration,and its balancing accuracy,repeatable accuracy and stability all reach to the level of international.

关 键 词：车轮动平衡 滤波 整周期采样 数字互相关滤波 校准 

分 类 号：TP272[自动化与计算机技术—检测技术与自动化装置]