汽车发动机曲轴转速及位置非接触检测的新方法  

Non-Contact Measuring Method for Rotational Speed and Angle of Automobile Engine Crank Shaft

作　　者：石延平[1] 陈季萍[1] 倪立学[1] 

机构地区：[1]淮海工学院机械系,江苏连云港222005

出　　处：《仪表技术与传感器》2010年第8期76-78,92,共4页Instrument Technique and Sensor

基　　金：江苏省高校自然科学基金资助项目(07KDJ430014)

摘　　要：设计了一种新型的汽车发动机曲轴转速及位置检测的新方法。介绍了检测方法、原理以及传感器的结构。分析了传感器的输出灵敏度特性和非线性误差。通过试验,分析了气隙、线圈匝数、激磁电流强度及频率对检测灵敏度的影响,不同非晶态合金薄带宽度对脉冲感应电压波形的影响。试验结果表明:设计的检测方法具有灵敏度高、结构简单等特点,用于汽车发动机曲轴的转速及位置检测是可行的。A new non-contact measurement method for the rotational speed and angle of automobile engine crank shaft was designed.The sensor structure,the principle of work and measurement method was introduced.The output sensitivity characteristic and the non-linear error of the sensor were analyzed.The influence of the air gap,the coil number of windings,and the excitation electric current and the frequency on the measurement sensitivity,and the influence of different amorphous alloy thin belt width on pulse induced voltage profile were analyzed by experiment.The experimental result shows the sensors have some characteristic such as higher sensitivity and simpler structure and is feasible for measuring rotational speed angle of the automobile engine.

关 键 词：汽车发动机 传感器 曲轴 转速 非晶态合金 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]